LEFENFELD; Michael

Patent Applications and Registrations

Patent applications and USPTO patent grants for LEFENFELD; Michael.The latest application filed is for "alkali metal cyanide production".

Company Profile

2.41.44

LEFENFELD; Michael - Sugar Land TX
Lefenfeld; Michael - New York NY
Lefenfeld; Michael - New York City NY
Lefenfeld; Michael - US
Lefenfeld; Michael - Wilmington DE

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Alkali Metal Cyanide Production App 20220017374 - LEFENFELD; Michael ; et al.	2022-01-20
Use of alkali metal silicides in post-chops oilfield recovery operations Grant 10,309,204 - Krumrine , et al.	2019-06-04
Alkali metal silicides for high temperature wettability improvement in carbonate reservoirs Grant 10,240,443 - Krumrine , et al.	2019-03-26
Use of metal silicides in hydrocarbon production and transportation Grant 10,024,500 - Krumrine, III , et al. July 17, 2	2018-07-17
Hydrogen generation systems and methods utilizing sodium silicide and sodium silica gel materials Grant 9,845,239 - Wallace , et al. December 19, 2	2017-12-19
Use Of Metal Silicides In Hydrocarbon Production And Transportation App 20170336032 - KRUMRINE, III; Paul H. ; et al.	2017-11-23
Use of metal silicides in hydrocarbon production and transportation Grant 9,791,108 - Krumrine, III , et al. October 17, 2	2017-10-17
Use Of Metal Silicides In Hydrocarbon Production And Transportation App 20170234489 - KRUMRINE, III; Paul H. ; et al.	2017-08-17
Use of metal silicides in hydrocarbon production and transportation Grant 9,677,392 - Krumrine, III , et al. June 13, 2	2017-06-13
Hydrogen generation systems utilizing sodium silicide and sodium silica gel materials Grant 9,669,371 - Wallace , et al. June 6, 2	2017-06-06
Enhanced crude oil recovery using metal silicides Grant 9,657,549 - Krumrine , et al. May 23, 2	2017-05-23
Foamed cement compositions containing metal silicides usable in subterranean well operations Grant 9,494,012 - Falcone , et al. November 15, 2	2016-11-15
Alkali Metal Silicides For High Temperature Wettability Improvement In Carbonate Reservoirs App 20160265328 - KRUMRINE; Paul H. ; et al.	2016-09-15
Use Of Alkali Metal Silicides In Post-chops Oilfield Recovery Operations App 20160245060 - KRUMRINE; Paul H. ; et al.	2016-08-25
Catalytic dehydration of alcohols using non-volatile acid catalysts Grant 9,409,832 - Lefenfeld , et al. August 9, 2	2016-08-09
Treatment Of Alkali Silica Gel And Alkali Porous Metal Oxide Compositions App 20160045909 - LEFENFELD; Michael ; et al.	2016-02-18
Catalytic Dehydration Of Alcohols Using Phase Pure, Calcined Single- And Multi-site Heterogeneous Catalysts App 20160008798 - LEFENFELD; Michael ; et al.	2016-01-14
Hydrogen Generation Systems And Methods Utilizing Sodium Silicide And Sodium Silica Gel Materials App 20160002031 - Wallace; Andrew P. ; et al.	2016-01-07
Hydrogen Generation Systems Utilizing Sodium Silicide And Sodium Silica Gel Materials App 20150329357 - Wallace; Andrew P. ; et al.	2015-11-19
Catalytic Dehydration Of Alcohols Using Non-volatile Acid Catalysts App 20150307413 - LEFENFELD; Michael ; et al.	2015-10-29
Silicide Compositions Containing Alkali Metals And Methods Of Making The Same App 20150299625 - LEFENFELD; Michael ; et al.	2015-10-22
Hydrogen generation systems and methods utilizing sodium silicide and sodium silica gel materials Grant 9,102,528 - Wallace , et al. August 11, 2	2015-08-11
Hydrogen generation systems utilizing sodium silicide and sodium silica gel materials Grant 9,079,146 - Wallace , et al. July 14, 2	2015-07-14
Foamed Cement Compositions Containing Metal Silicides Usable In Subterranean Well Operations App 20150191993 - Falcone; James S. ; et al.	2015-07-09
Catalytic dehydration of alcohols using non-volatile acid catalysts Grant 9,040,741 - Lefenfeld , et al. May 26, 2	2015-05-26
Catalytic dehydration of alcohols using phase pure, calcined single- and multi-site heterogeneous catalysts Grant 9,012,709 - Lefenfeld , et al. April 21, 2	2015-04-21
Silicide compositions containing alkali metals and methods of making the same Grant 8,986,643 - Lefenfeld , et al. March 24, 2	2015-03-24
Water Reactive Hydrogen Fuel Cell Power System App 20150061600 - Wallace; Andrew P. ; et al.	2015-03-05
Water reactive hydrogen fuel cell power system Grant 8,895,204 - Wallace , et al. November 25, 2	2014-11-25
Catalytic Dehydration Of Alcohols Using Phase Pure, Calcined Single- And Multi-site Heterogeneous Catalysts App 20140335013 - LEFENFELD; Michael ; et al.	2014-11-13
Lithium-porous Metal Oxide Compositions And Lithium Reagent-porous Metal Compositions App 20140306153 - LEFENFELD; Michael ; et al.	2014-10-16
Enhanced Crude Oil Recovery Using Metal Silicides App 20140196896 - Krumrine; Paul H. ; et al.	2014-07-17
Catalytic dehydration of alcohols using phase pure, calcined single- and multi-site heterogeneous catalysts Grant 8,759,599 - Lefenfeld , et al. June 24, 2	2014-06-24
Water reactive hydrogen fuel cell power system Grant 8,632,928 - Wallace , et al. January 21, 2	2014-01-21
Use Of Metal Silicides In Hydrocarbon Production And Transportation App 20130341023 - KRUMRINE, III; Paul H. ; et al.	2013-12-26
Hydrogen Generation Systems And Methods Utilizing Sodium Silicide And Sodium Silica Gel Materials App 20130251626 - WALLACE; Andrew P. ; et al.	2013-09-26
Water Reactive Hydrogen Fuel Cell Power System App 20130230784 - WALLACE; Andrew P. ; et al.	2013-09-05
Silica gel compositions containing alkali metals and alkali metal alloys Grant 8,501,036 - Lefenfeld , et al. August 6, 2	2013-08-06
Silicide compositions containing alkali metals and methods of making the same Grant 8,372,371 - Lefenfeld , et al. February 12, 2	2013-02-12
Water Reactive Hydrogen Generation System And Method With Separation Of Waste Products From Water Reactive Materials App 20120282166 - WALLACE; Andrew P. ; et al.	2012-11-08
Lithium-porous Metal Oxide Compositions And Lithium Reagent-porous Metal Compositions App 20120235084 - LEFENFELD; Michael ; et al.	2012-09-20
Method for deprotecting aryl or alkyl sulfonamides of primary or secondary amines Grant 8,263,808 - Lefenfeld , et al. September 11, 2	2012-09-11
Catalytic Dehydration Of Alcohols Using Non-volatile Acid Catalysts App 20120220796 - Lefenfeld; Michael ; et al.	2012-08-30
Silica Gel Compositions Containing Alkali Metals And Alkali Metal Alloys App 20120199789 - LEFENFELD; Michael ; et al.	2012-08-09
Silicide Compositions Containing Alkali Metals And Methods Of Making The Same App 20120201734 - LEFENFELD; Michael ; et al.	2012-08-09
Lithium-porous metal oxide compositions and lithium reagent-porous metal compositions Grant 8,197,707 - Lefenfeld , et al. June 12, 2	2012-06-12
Water Reactive Hydrogen Fuel Cell Power System App 20120115054 - WALLACE; Andrew P. ; et al.	2012-05-10
Method and Composition for Reducing Exhaled Carbon Dioxide Emissions App 20120027827 - Lefenfeld; Michael ; et al.	2012-02-02
Silica gel compositions containing alkali metals and alkali metal alloys Grant 8,007,762 - Lefenfeld , et al. August 30, 2	2011-08-30
Use of alkali metal-silica gel (M-SG) materials in solvent and monomer drying and purification for their use in anionic polymerization Grant 7,932,329 - Ito , et al. April 26, 2	2011-04-26
Silicide Compositions Containing Alkali Metals And Methods Of Making The Same App 20100316917 - LEFENFELD; Michael ; et al.	2010-12-16
Titanium oxide and alumina alkali metal compositions Grant 7,820,061 - Lefenfeld , et al. October 26, 2	2010-10-26
Silicide compositions containing alkali metals and methods of making the same Grant 7,811,541 - Lefenfeld , et al. October 12, 2	2010-10-12
Hydrogen Generation Systems Utilizing Sodium Silicide And Sodium Silica Gel Materials App 20100247426 - Wallace; Andrew P. ; et al.	2010-09-30
Catalytic Dehydration Of Alcohols Using Phase Pure Single- And Multi-site Heterogeneous Catalysts App 20100249476 - LEFENFELD; Michael ; et al.	2010-09-30
Silica Gel Compositions Containing Alkali Metals And Alkali Metal Alloys App 20100166648 - LEFENFELD; Michael ; et al.	2010-07-01
Silica gel compositions containing alkali metals and alkali metal alloys Grant 7,709,410 - Lefenfeld , et al. May 4, 2	2010-05-04
Method For Deprotecting Aryl Or Alkyl Sulfonamides Of Primary Or Secondary Amines App 20090306391 - Lefenfeld; Michael ; et al.	2009-12-10
Titanium Oxide And Alumina Alkali Metal Compositions App 20090266771 - Lefenfeld; Michael ; et al.	2009-10-29
Method And Apparatus For Delivering Targeted Content App 20090187486 - LEFENFELD; Michael ; et al.	2009-07-23
Titanium oxide and alumina alkali metal compositions Grant 7,560,606 - Lefenfeld , et al. July 14, 2	2009-07-14
Use Of Alkali Metal-silica Gel (m-sg) Materials In Solvent And Monomer Drying And Purification For Their Use In Anionic Polymerization App 20090105430 - ITO; Mana ; et al.	2009-04-23
Silica gel compositions containing alkali metals and alkali metal alloys App 20090041614 - Lefenfeld; Michael ; et al.	2009-02-12
Silica gel compositions containing alkali metals and alkali metal alloys Grant 7,410,567 - Lefenfeld , et al. August 12, 2	2008-08-12
Lithium-porous Metal Oxide Compositions And Lithium Reagent-porous Metal Compositions App 20080111104 - LEFENFELD; Michael ; et al.	2008-05-15
Titanium Oxide And Alumina Alkali Metal Compositions App 20080063596 - Lefenfeld; Michael ; et al.	2008-03-13
Titanium oxide and alumina alkali metal compositions Grant 7,259,128 - Lefenfeld , et al. August 21, 2	2007-08-21
Silica Gel Compositions Containing Alkali Metals And Alkali Metal Alloys App 20070167317 - LEFENFELD; Michael ; et al.	2007-07-19
Silica gel compositions containing alkali metals and alkali metal alloys Grant 7,211,539 - Lefenfeld , et al. May 1, 2	2007-05-01
Titanium oxide and alumina alkali metal compositions App 20060073968 - Lefenfeld; Michael ; et al.	2006-04-06
Silicide compositions containing alkali metals and methods of making the same App 20060002839 - Lefenfeld; Michael ; et al.	2006-01-05
Silica gel compositions containing alkali metals and alkali metal alloy App 20050151278 - Lefenfeld, Michael ; et al.	2005-07-14
System for delivery of active substances Grant 6,833,340 - Lefenfeld , et al. December 21, 2	2004-12-21
System For Delivery Of Active Substances App 20040077513 - Lefenfeld, Michael ; et al.	2004-04-22

Company Registrations

SEC

0001826906

Lefenfeld Michael

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