Inventor
LEFENFELD MICHAEL
US34 patents
⚠️ This page may combine multiple inventors who share the name “LEFENFELD MICHAEL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SIGNA CHEMISTRY INC
14 patentsUS7811541B2Oct 12, 2010
Silicide compositions containing alkali metals and methods of making the same
SIGNA CHEMISTRY INC20 citations92
US8372371B2Feb 12, 2013
Silicide compositions containing alkali metals and methods of making the same
SIGNA CHEMISTRY INC8 citations83
US8007762B2Aug 30, 2011
Silica gel compositions containing alkali metals and alkali metal alloys
SIGNA CHEMISTRY INC5 citations73
US7932329B2Apr 26, 2011
Use of alkali metal-silica gel (M-SG) materials in solvent and monomer drying and purification for their use in anionic polymerization
SIGNA CHEMISTRY INC3 citations59
US9791108B2Oct 17, 2017
Use of metal silicides in hydrocarbon production and transportation
SIGNA CHEMISTRY INC1 citations58
US10309204B2Jun 4, 2019
Use of alkali metal silicides in post-chops oilfield recovery operations
SIGNA CHEMISTRY INC1 citations55
US9409832B2Aug 9, 2016
Catalytic dehydration of alcohols using non-volatile acid catalysts
SIGNA CHEMISTRY INC0 citations52
US7820061B2Oct 26, 2010
Titanium oxide and alumina alkali metal compositions
SIGNA CHEMISTRY INC0 citations51
US7709410B2May 4, 2010
Silica gel compositions containing alkali metals and alkali metal alloys
SIGNA CHEMISTRY INC0 citations51
US7560606B2Jul 14, 2009
Titanium oxide and alumina alkali metal compositions
SIGNA CHEMISTRY INC0 citations51
US10024500B2Jul 17, 2018
Use of metal silicides in hydrocarbon production and transportation
SIGNA CHEMISTRY INC0 citations48
US9677392B2Jun 13, 2017
Use of metal silicides in hydrocarbon production and transportation
SIGNA CHEMISTRY INC0 citations48
US9012709B2Apr 21, 2015
Catalytic dehydration of alcohols using phase pure, calcined single- and multi-site heterogeneous catalysts
SIGNA CHEMISTRY INC0 citations47
US10240443B2Mar 26, 2019
Alkali metal silicides for high temperature wettability improvement in carbonate reservoirs
SIGNA CHEMISTRY INC0 citations43
LEFENFELD MICHAEL
6 patentsUS8197707B2Jun 12, 2012
Lithium-porous metal oxide compositions and lithium reagent-porous metal compositions
LEFENFELD MICHAEL21 citations91
US8986643B2Mar 24, 2015
Silicide compositions containing alkali metals and methods of making the same
LEFENFELD MICHAEL1 citations61
US9040741B2May 26, 2015
Catalytic dehydration of alcohols using non-volatile acid catalysts
LEFENFELD MICHAEL0 citations51
US8501036B2Aug 6, 2013
Silica gel compositions containing alkali metals and alkali metal alloys
LEFENFELD MICHAEL0 citations51
US8263808B2Sep 11, 2012
Method for deprotecting aryl or alkyl sulfonamides of primary or secondary amines
LEFENFELD MICHAEL0 citations51
US8759599B2Jun 24, 2014
Catalytic dehydration of alcohols using phase pure, calcined single- and multi-site heterogeneous catalysts
LEFENFELD MICHAEL1 citations47
INTELLIGENT ENERGY LTD
4 patentsUS9102528B2Aug 11, 2015
Hydrogen generation systems and methods utilizing sodium silicide and sodium silica gel materials
INTELLIGENT ENERGY LTD7 citations82
US9845239B2Dec 19, 2017
Hydrogen generation systems and methods utilizing sodium silicide and sodium silica gel materials
INTELLIGENT ENERGY LTD4 citations71
US9669371B2Jun 6, 2017
Hydrogen generation systems utilizing sodium silicide and sodium silica gel materials
INTELLIGENT ENERGY LTD4 citations71
US8895204B2Nov 25, 2014
Water reactive hydrogen fuel cell power system
INTELLIGENT ENERGY LTD1 citations50
WALLACE ANDREW P
3 patentsUS9156687B2Oct 13, 2015
Water reactive hydrogen generation system and method with separation of waste products from water reactive materials
WALLACE ANDREW P3 citations59
US9079146B2Jul 14, 2015
Hydrogen generation systems utilizing sodium silicide and sodium silica gel materials
WALLACE ANDREW P3 citations59
US8632928B2Jan 21, 2014
Water reactive hydrogen fuel cell power system
WALLACE ANDREW P1 citations48