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PROSPECTIVE PATENTS FOR LICENSING:
CONDUCTING POLYMER MEMBRANE AND A PROCESS FOR THE PREPERATION OF THE SAME MEMBRANE
INVENTORS : RAMADHAR SINGH, AMRJEET KAUR NARULA,
SUBHAS CHANDRA, SHOBHA BROOR
US PATENT: 6156202 DECEMBER: 25,2000
RO PATENT: 120690 SEPTEMBER 28, 2007
Polymer based enzyme electrode for estimation of cholesterol and process for preparation thereof
US 7,175,746 February 13, 2007
Arun Kumar, Asha Chaubey, Bansi Dhar Malhotra, Rajesh, Surinder Krishan Grover
disclosed. The electrode has an ion-doped layer to increase the conductivity
of the polypyrrole(PPy) layer. The ion doping is achieved by incorporating dodecyl benzene sulphonate (DBS) in the poly pyrrole film deposited by electrochemical deposition The enhanced conductivity due to ion doping helps in faster estimation of cholesterol having a measured response time of 30 seconds. The shelf life of the electrode is at least eight weeks without a mediator at room temperature. The enzyme electrode thus developed shows fast response to cholesterol and is highly sensitive to cholesterol. The PPy-DBS based cholesterol biosensor is likely to have applications in clinical diagnostics .
A Single step process for the preparation of high density carbon-carbon composite material
O P Bahl, R B Mathur, T L Dhami, S K Chauhan
Indian Patent Application : 0567 DEL 2005
Device useful as a master/slave clock for transmitting standard time over a telephone network and a telephone network incorporating the device for transmitting and receiving standard time
US PATENT: 6,091,804 July 18, 2000
Indian Patent Application : 193532
P Banerjee
A device capable of transmitting or receiving time data in the master clock or slave clock modes respectively over standard telephone networks is a microprocessor based system with an independent clock and a time display unit. In the slave clock mode, the device ( named as TELECLOCK Receiver) can automatically dial a predetermined telephone number where the master clock refers to the National Standard Time. This time service via telephone is called Teleclock service. NPL has already started this service. through this arrangement, a time service may be started by any country. The national time may be accessed by users with the help of an inexpensive receiver based on this patent without requiring any computer. This is the uniqueness of the invention
An automated dead weight force machine useful for calibrating strain gauge load cells.
K K Jain, HNP Poddar, RP Singhal
Indian Patent Application : 2625DEL2006
Abstract
A low cost accurate dead weight force measurement machine capable of calibrating load cells of 2, 5, &10 kN capacity has been developed. The system uses a single central pin passing through the center of the weight each supported on individual support and provided with pneumatic actuators for loading and unloading of these weights. This enables to apply any selected weight to the test load cell irrespective of its position in the weight stack. Further, this provides an almost vibration free system giving stabilization of the machine in the fastest possible time. The calibration of the force transducer can be carried out in compression following any one of the internationally accepted calibration procedure to the highest possible accuracy requirement as per the standard.
A process for making porous conducting carbon composite electrode suitable for fuel cell application
R B Mathur, T L Dhami, Priyanka Maheshwari, A.K. Gupta, J. Rangarajan, R K Sharma and C P Sharma
Indian Patent Application : 0395DEL2007
The present invention relates to the process of preparation of porous carbon paper and particularly to the manufacture of porous carbon paper having porosity in the range of 50 –70 % to be used as electrode substrate for a Proton Exchange Membrane or Phosphoric acid fuel cell. The invention comprises dispersing chopped carbon fibers in an aqueous solutionusing triton 100 X as surfactant, the slurry containing dispersed carbon fibers was filtered on a specially designed filtration unit so that the randomly oriented fibers are caused to be uniformly distributed on a planer support , washed thoroughly to remove the dispersing agent, dried and impregnated with calculated amount of phenolic resin using hand lay up process. The sample is then moulded into sheets in the special dies between the platens of a hydraulic press, resin being cured at appropriate temperature. Sample was carbonized upto 1000 °C in the presence of inert atmosphere keeping the desired heating rates. Sample was further heat treated to 1700°C in a furnace in inert atmosphere at desired heating rates by placing the sample between.
Ferrofluid based electric power generator
Dr. R.P. Pant, Dr. V.K.Jain , Mr Vinod Kumar , Dr.S.K. Halder, Dr.J.C. Sharma, Prof. Vikram Kumar
Indian Patent Application : 1364DEL2008
ABSTRACT
Electric power generator has been developed using ferrofluid. The coefficient of friction of the magnets motion is tremendously reduced using ferrofluid material. This unique property of magnets levitation by ferrofluid is exploited for making the power generator device. An alternating current has been produced and rectified by using bridge circuit for providing continuous power source.
The novelty of this invention lies on the role of ferrofluid bearing in the design of the potable device, which is capable of generating minimum of 410 mW electric power as driven by mechanical motion using nearly 7 Hz frequency. The device is also capable of generating minimum of 1.2-watt electric power as driven by wind energy with the efficiency of 24% at wind speed of 4m/s. Adding more similar modules/devices can increase the capacity of this power generator. This device has many useful applications viz. lighting, charging of cell phone or similar other devices/ instruments in remote areas/defense purpose where no other source of electricity is available. We believe that this technique is unique for the generation of electrical energy power by using both mechanical energy and wind energy.
AN IMPROVED PROCESS BASED ON THE SOL-GEL TECHNIQUE FOR THE PREPARATION OF CeTi2O6 POWDER
Amita Verma, S.A. Agnihotry
Indian Patent Application : 279/DEL/2007
Abstract
A sol-gel process for the preparation of CeTi2O6 compound, which has applications in the areas of photocatalytic activity and immobilization of nuclear waste is presented. This compound can be obtained by completely drying the solution, which comprises both titanium and cerium precursors into a xerogel and sintering it at a temperature of 14000C for 5 min. in air. The Ce:Ti mole ratio in the precursor sol for the preparation of this compound is identified in the range of 0.33:1 and 0.6:1.
A PROCESS FOR THE SIMULTANEOUS AND SELECTIVE GROWTH OF SINGLE-WALLED AND MULTI -WALLED CARBON NANOTUBES
R.B.Mathur, Chhotey Lal, T.L.Dhami, Bhanu Pratap Singh , A.K. Gupta, Jagdish Ghawana
Indian Patent Application : 2581DEL2006
Abstract
The present invention relates to a process for the growth of single walled and multiwalled carbon nanotubes using electric arc discharge technique. According to present development it is possible to synthesise and collect catalyst free carbon nanotubes from cathode deposit. A mechanism of cooling coil arrangement was designed and used inside the arc discharge chamber so as to be capable to grow sufficient amount of single walled carbon nanotubes in the form of webs surrounding the coil. The ambient inside the chamber was an inert gas and the pressure maintained between 100 to 500 torr. The anode was prepared by using a mixing coke and binder pitch with different atomic percents of Ni or Co or combination of both followed by compression moulding and carbonization. The dc-arc was created by applying a voltage of about 20-25V and maintaining an arc current of 50-150A. After the arc discharge multiwalled carbon nanotubes were found deposited on the cathode, free from catalyst impurities whereas the chamber deposit was found to contain single walled carbon nanotubes together with catalyst and and amorphous carbon. The present invention offers a scalable way for producing both SWNTs and MWNTs in the single run.
A Process for joining oxide-superconducting tubes with a superconducting joint
S N Ekbote, G K Padam, N K Arora, Mukul Sharma, Ramesh Sethi
Indian Patent Application : 198 DEL 2007
Abstract
A novel method for making a superconducting joint between oxide superconducting tubes is disclosed. Beginning with preparation of a partially preformed superconducting material. Cold isopressing of the powder of the partially performed superconducting material in to tube shape. Making of grooves at both ends of the tubes with a subsequent deposition of a silver layer. Lapping of one of the end faces of a pair of said tubes to be joined. These lapped end faces of both the tubes clubbed together on a common silver bush are coated with a paste of the same partially preformed superconducting material in organic formulation. Then these coated end faces are closed pressed together to form a joint. This joint portion and the end portions of the tubes are wrapped with a perforated silver foil followed by deposition of another layer of silver. Finally, the assembly of this joint portion and the pair of tubes is heat treated in air for 100 to 150 hours and at temperatures from 830o too 850oC. The joint made according to this method is able to stably carry not less than 80% of the transport current of the high temperature superconducting tubes.
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Development of thick film ceramic gas sensors: LPG gas sensor
Vipin Kumar, Kiran Jain, S T Lakshmikumar, T Raghavendra
Indian Patent Application : 0062DEL2008
ABSTRACT
An Improved Constant Temperature Bath
Y P Singh, S K Nijhawan and R B Sibal
Indian Patent Application : 610 DEL 2000
An improved constant temperature bath has been developed which comprises : two co axially placed vertical tubular containers and having an insulating material with radiation shield between them, the inner chamber being provided with a top cover capable of holding a stirring system essentially consisting of a tubular bottom open shaft enclosure extending almost to the bottom of the said tubular container, the said shaft enclosure being provided with a co axially placed rotatable shaft having angular screw type fins throughout its length covering the full length of the said shaft enclosure , the top of the said rotatable shaft being connected by known means to a prime mover and the bottom end being rotatably fixed by known means to the bottom end of the tubular shaft enclosure, the said inner vertical tubular container being provided by known means for controlled heating and cooling.
Thin film ethanol sensor and a process for the preparation
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United States Patent |
6,881,582 April 19, 2005 |
Alok Chandra Rastogi, Kiran Jain , Heremba Prasad Gupta, Vipin Kumar |
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China |
696502 July 13, 2007 |
Abstract
Disclosed is a method of making a bismuth molybdate precursor solution using a metallorganic decomposition (MOD) process consisting of the formation of a precursor sol of hexanoates of Bismuth (Bi) and Molybdenum (Mo). The precursor solution is used to make thin film of Bismuth molybdate by spin coating and spray pyrolysis. The bismuth molybdate films have the useful alpha and gamma phases having high sensitivity to ethanol gas, the detection of the ethanol gas is based upon the change of electrical conductivity of a thick film of the semiconductor oxide sensing element resulting from the ethanol gas in an oxygen-containing atmosphere. When the drying is effected by spray pyrolysis, quite thick films with high adhesion have been produced over different substrates, including quartz. The thin film of the present invention made by spray pyrolysis has a very fast response to ethanol detection eg typically 5 seconds.
Reusable heat pack, method of manufacture thereof, mixture for use in a reusable heatpack and process for the preparation thereof
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US Patent |
6,537,309 March 25, 2003 |
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Chattrapal Sharma , Rajendra Kumar Sharma, Chandra Kant, Ajit Kumar Sarkar |
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RO |
119342 B1 |
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AU |
771018 |
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RU |
2223071 |
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NZ |
518062 |
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EP |
1245207 B1 |
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CA |
2380664 |
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Indian Patent Application: 393 DEL 2001
Abstract
Process for the preparation of polycrystalline silicon ingot
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US Patent |
5,431,869 |
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P K Singh , Prem Prakash |
July 11, 1995 |
Abstract
Formulation for treating Thalassemia and a process for preparing the same
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US Patent |
5,665,392 September 9, 1997 |
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Kumar; Sarkar Ajit , Sudarshan; Kumar , Harsh; Priyadarshi , Rattan; Khanna Sushil, Ghansham; Dass |
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Japan |
3253878 |
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China |
ZL96119785.4
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Abstract
A pharmaceutical formulation useful for treating patients suffering from thalassemia, which comprises powder of Anemonin Pretensis in an amount in the range of 0.02 to 0.12 wt % of the formulation, quinine sulphate in an amount in the range of 0.0005 to 0.003 wt % of the formulation, distilled or demineralised water in an amount in the range of 0 to 40 wt % of the formulation and, ethanol in an amount in the range of 99.88 to 60 wt % of the formulation; and a process for preparing the formulation by mixing the above ingredients.
Lead iron tungstate capacitive transducer, relaxor material therefor and method of manufacture of said relaxor material
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United States Patent |
6,715,358 |
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Jain; Kamlesh Kumar Kumar; Vinay, Kashyap; Subhash Chand |
April 6, 2004 |
Abstract
A SOL-GEL PROCESS FOR THE PREPARATION OF MONOCLINIC CeTi2O6 PHASE IN THIN FILM FORM
VERMA AMITA, AGNIHOTRY SUHASINI AVINASH, BAKSHI ASHOK KUMAR
Indian Patent Application : 0392DEL2006
ABSTRACT
A sol-gel process for the deposition of CeTi2O6 thin films, which has applications as passive counter electrodes in electrochromic devices, sensors and photocatalytic agent is presented. This film can be obtained by spin coating a solution, which comprises both titanium and cerium precursors on to electrically conducting or insulating glass substrates and annealing at a temperature of 6000C for 5 min. in air. The Ce:Ti mole ratio in the deposition sol for the preparation of the film is identified in the range of 0.4 and 0.6.
A method for the detection of earthquake precursors
H N Dutta, B S Gera, G Singh, V K Ojha
International Application: PCT/IB04/01015 /2004
Abstract
The present invention discloses a novel use of a SODAR system to detect precursor of a major earthquake of intensity not less than 5.0 on the Richter scale. The requirement for the SODAR to be able to detect a possible major earthquake is that the epicenter should not be beyond a distance of about 250 Kms from the position of the SODAR. The conventional SODAR used in the present invention has the characteristics of the capability of detection of a reflected sound intensity from atmospheric irregularities which are effected by the propagation of a long period and large amplitude wave in the lower atmosphere
A process for the preparation of a low contact resistance contact on a high temperature superconductor
Indian Patent Application : 02987DELNP2006
International Application: PCT/IB2004/001013
ABSTRACT
Disclosed is a three layer process for making contact points to a high transition temperature superconductor (HTSC) particularly to a (Bi,Pb)2Sr2Ca2Cu3O10+x with and without silver in the superconductor. The contact structure is a three layer configuration with a perforated silver foil sandwiched between two metal spray gun deposited silver layers and subsequent heat treatment in air. The contact has been made on tubes and rods. The silver contacts made have the characteristics of low resistance of 10-6 Ohms. Further, the contacts are capable of carrying a continuous current of 200 Amps without adding any substantial heat load to the cryogen used to cool the HTSC. The contact resistance at 4.2K is in the range of 1.5x10-8 to 8.5x10-8 ohms in zero applied field.
A process for the preparation of high temperature superconducting (HTS) bulk current leads with improved properties and superconducting bulk current leads made thereby
Indian Patent Application : 0640DEL2006
International Application: PCT/IN2006/000279
ABSTRACT
The present invention provides a process for the preparation of high temperature superconducting (HTS) bulk current leads capable of supplying a continuous current of more than 200A at 77K, at least for 2 to 4 hours without any substantial heat load to cryogen free cryocooler and other superconducting magnet systems. The superconducting bulk current leads with improved properties are prepared from an improved high temperature superconducting (HTS) bismuth based cuperate [(Bi, Pb)2 Sr2Ca2Cu3O10+x ] material in tube and rod shape with both end metallic contacts. To produce such a lead, the process included modification of the superconducting material with homogeneous silver addition, a step of initial sintering in a large size tube followed by crushing into powder, a step of shaping the said initially sintered tube powder into tubes and rods of different size, a step of formation of metallic contacts by a perforated silver foil sandwiched between two metal spray deposited silver at both end parts of the said tubes and rods followed by a final step of co-sintering. In the current leads obtained according to these aspects, it is possible to stably carry current more than 200A required for energizing superconducting magnet systems.
FOR FURTHER INFORMATION CONTACT: : dpbhatt@mail.nplindia.ernet.in
