Krishna Te Sapru Deceased20666 Crescent Pointe Pl, Ashburn, VA 20147
Krishna Sapru Phones & Addresses
20666 Crescent Pointe Pl, Ashburn, VA 20147 703-7296626
1924 Smallbrook Ct, Troy, MI 48007 248-8796878
Ann Arbor, MI
Orlando, FL
20666 Crescent Pointe Pl, Ashburn, VA 20147 248-8796878
Work
Position:
Production Occupations
Education
Degree:
Bachelor's degree or higher
Mentions for Krishna Te Sapru
Publications & IP owners
Us Patents
Method For Combining Metals With Different Melting Points
US Patent:
6340376, Jan 22, 2002
Filed:
Dec 27, 1999
Appl. No.:
09/472289
Inventors:
Krishna Sapru - Troy MI
Subramanian Ramachandran - Troy MI
Lu Ming - Troy MI
Subramanian Ramachandran - Troy MI
Lu Ming - Troy MI
Assignee:
Energy Conversion Devices, Inc. - Rochester Hills MI
International Classification:
C22C 102
US Classification:
75 1014, 75 1065, 420590
Abstract:
A method for combining a first metal with a second metal where the melting point of the second metal is higher than the melting point of the first metal. The first and second metals are melted in separate crucibles. The second molten metal is introduced onto or into the first molten metal. Also described is a two-zone furnace for carrying out the method.
High Capacity Calcium Lithium Based Hydrogen Storage Material And Method Of Making The Same
US Patent:
6593017, Jul 15, 2003
Filed:
Jan 30, 2002
Appl. No.:
10/059778
Inventors:
Zhaosheng Tan - Troy MI
Krishna Sapru - Troy MI
Krishna Sapru - Troy MI
Assignee:
Energy Conversion Devices, Inc. - Rochester Hills MI
International Classification:
H01M 818
US Classification:
429 19, 429 13, 429 17, 423646, 4236481, 4236582, 423644, 419 10, 25218826
Abstract:
A nonreversible metal hydride for use as a hydrogen fuel. The nonreversible metal hydride is formed from an intermetallic compound having the formula Ca Li. The Ca Li is formed by melting amounts of elemental lithium and calcium together by induction heating in an argon atmosphere. The Ca Li is cooled and crushed into a powder. The alloy powder is subsequently hydrogenated at ambient temperatures or lower. Resulting is a metal hydride having exceptional reactivity to water during hydrolysis due to its nano-crystalline structure. Dehydrogenation of the metal hydride does not regularly occur due to the absorbed hydrogen being chemically bonded to the lithium and calcium. The Ca Li hydride may be used in a variety of applications as a hydrogen fuel and the Ca Li alloy may be used as a desiccant for removing moisture from hydrogen or hydrogen containing streams.
High Capacity Transition Metal Based Hydrogen Storage Materials For The Reversible Storage Of Hydrogen
US Patent:
6616891, Sep 9, 2003
Filed:
Sep 18, 2002
Appl. No.:
10/247536
Inventors:
Krishna Sapru - Troy MI
Zhaosheng Tan - Troy MI
Mohamed Bazzi - Dearborn Heights MI
Subramanian Ramachandran - Milton WA
Stanford R. Ovshinsky - Bloomfield Hills MI
Zhaosheng Tan - Troy MI
Mohamed Bazzi - Dearborn Heights MI
Subramanian Ramachandran - Milton WA
Stanford R. Ovshinsky - Bloomfield Hills MI
Assignee:
Energy Conversion Devices, Inc. - Rochester Hills MI
International Classification:
C22C 1400
US Classification:
420421, 148421, 148423
Abstract:
A reversible hydrogen storage alloy capable of absorbing approximately 4 weight percent hydrogen and desorbing up to 2. 8 weight percent hydrogen at temperatures up to 100Â C. The hydrogen storage alloy is generally composed of titanium, vanadium, chromium, and manganese. Additional elements such as zirconium, yttrium, iron, nickel, zinc, molybdenum, and tantalum may also be included in the alloy.
Metal Hydride Based Air Cooling Method And Apparatus
US Patent:
6722154, Apr 20, 2004
Filed:
May 9, 2003
Appl. No.:
10/435577
Inventors:
Zhaosheng Tan - Troy MI
Krishna Sapru - Troy MI
Krishna Sapru - Troy MI
Assignee:
Energy Conversion Devices, Inc. - Rochester Hills MI
International Classification:
F25B 1708
US Classification:
62480, 62106
Abstract:
The present invention utilizes the hydrogen storage capabilities of hydrogen storage material to dehumidify and cool air flowing into an enclosed area, such as a residential home. The invention provides an apparatus and method that incorporates a hydrogen storage module having a low pressure, the heat retriever module, and a hydrogen storage module having a high pressure, the cooling module, wherein the modules are connected by a pipe or tube that guides the flow of hydrogen gas back and forth between the modules. The heat retriever module is heated to increase the temperature of the heat retriever module and hydrogen gas is desorbed from the hydrogen storage material contained therein, then a valve in the tube or pipe is opened and the hydrogen gas flows to the cooling module. The valve is closed, after the hydrogen gas is absorbed by the hydrogen storage material of the cooling module. The absorption of hydrogen gas causes an increase in temperature of the cooling module.
Hydrogen Powered Scooter
US Patent:
6918382, Jul 19, 2005
Filed:
Aug 26, 2002
Appl. No.:
10/227764
Inventors:
Subramanian Ramachandran - Milton WA, US
Philip Sievers - Detroit MI, US
Eugene Kurlonko - Lapeer MI, US
Krishna Sapru - Troy MI, US
Zhaosheng Tan - Troy MI, US
Stanford R. Ovshinsky - Bloomfield Hills MI, US
Philip Sievers - Detroit MI, US
Eugene Kurlonko - Lapeer MI, US
Krishna Sapru - Troy MI, US
Zhaosheng Tan - Troy MI, US
Stanford R. Ovshinsky - Bloomfield Hills MI, US
Assignee:
Energy Conversion Devices, Inc. - Rochester Hills MI
International Classification:
F02B043/00
US Classification:
123527, 123DIG 12
Abstract:
A scooter powered by a hydrogen powered internal combustion engine fueled by a throttled stream of air into which a controlled amount of hydrogen is injected. A hydrogen fuel control system is used to control the amount of hydrogen injected into the throttled air stream using multiple parameters. The amount of hydrogen present in the hydrogen storage unit is monitored using an on-board hydrogen fuel measurement system utilizing a microcontroller and multiple sensors.
Portable Heating Pack
US Patent:
6920873, Jul 26, 2005
Filed:
Sep 11, 2003
Appl. No.:
10/660252
Inventors:
Srinivasan Venkatesan - Southfield MI, US
Krishna Sapru - Troy MI, US
Boyko Aladjov - Rochester Hills MI, US
Krishna Sapru - Troy MI, US
Boyko Aladjov - Rochester Hills MI, US
Assignee:
Energy Conversion Devices, Inc. - Rochester Hills MI
International Classification:
F24J001/00
US Classification:
12626305, 12626306
Abstract:
A portable heating pack utilizing a supercorroding metallic alloy that produces heat and gaseous hydrogen upon contacting a corroding liquid. The portable heating pack provides for the consumption and/or storage of the gaseous hydrogen rather than venting the gaseous hydrogen from the portable heating pack.
Photoresponsive Amorphous Semiconductor Materials, Methods Of Making The Same, And Photoanodes Made Therewith
US Patent:
4511638, Apr 16, 1985
Filed:
Jun 1, 1983
Appl. No.:
6/499900
Inventors:
Krishna Sapru - Troy MI
Benjamin Reichman - Birmingham MI
Gao Liang - Detroit MI
Benjamin Reichman - Birmingham MI
Gao Liang - Detroit MI
Assignee:
Energy Conversion Devices, Inc. - Troy MI
International Classification:
H01M 636
C25B 1110
C25B 1110
US Classification:
429111
Abstract:
A photoresponsive amorphous semiconductor material is modified by incorporating at least one compensating agent selected from a group consisting of hydrogen, lithium, fluorine, beryllium, aluminum, boron, magnesium, other Group I elements, and compounds of these elements. The semiconductor material is cathodically treated either simultaneously with or subsequent to this modification. The semiconductor material may be additionally modified by incorporating a second modifying agent selected from a group consisting of silicon, the transition elements, the lanthanides, and compounds of these elements. The semiconductor material also may be subjected to heat treatment in an inert atmosphere before the cathodic treatment. A photoanode utilizing the above described semiconductor material further includes a substrate to support a film of said material. The photoanode may additionally include a second semiconductor film having a small band gap inserted between said substrate and said first semiconductor film.
Liquid Junction Photoelectrodes Using Amorphous Silicon-Based Thin Film Semiconductor
US Patent:
4656103, Apr 7, 1987
Filed:
May 20, 1985
Appl. No.:
6/736433
Inventors:
Benjamin Reichman - Birmingham MI
Gao Liang - Detroit MI
Krishna Sapru - Troy MI
Gao Liang - Detroit MI
Krishna Sapru - Troy MI
Assignee:
Energy Conversion Devices, Inc. - Troy MI
International Classification:
H01M 636
C25B 102
C25B 102
US Classification:
429111
Abstract:
An amorphous silicon semiconductor alloy having multiple layers is used to form a photoelectrode (either a photoanode or a photocathode) for use in a photoelectrochemical cell for the photoelectrolysis of water to produce hydrogen or the conversion of solar energy into electrical energy. Each layer of the semiconductor alloy has a different dopant concentration ranging from no dopant to a heavy dopant concentration. The photoelectrochemical cell can utilize a photocathode and a conventional metal anode, a photoanode or both a photocathode and a photoanode according to the present invention. The semiconductor alloy of the photoelectrode is a-Si:F:H or a-Si:H. sub. x deposited on a reflective layer of aluminum or molybdenum which is deposited on a substrate of glass or stainless steel. A tunnelable oxide layer can be deposited or intrinsically formed to cover and protect the top surface of the semiconductor alloy body. The photoanode is of an n-type configuration while the photocathodes can be either a p-type or a P-I-N type configuration.
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