Michael Lefenfeld

Person

New York, NY, US

People

Patents Grantslast 30 patents

Information Patent Grant
Alkali metal cyanide production
- Patent number 11,608,274
- Issue date Mar 21, 2023
- CYANCO CORPORATION
- Michael Lefenfeld
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Use of alkali metal silicides in post-chops oilfield recovery opera...
- Patent number 10,309,204
- Issue date Jun 4, 2019
- Signa Chemistry, Inc.
- Paul H. Krumrine
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Alkali metal silicides for high temperature wettability improvement...
- Patent number 10,240,443
- Issue date Mar 26, 2019
- Signa Chemistry, Inc.
- Paul H. Krumrine
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Hydrogen generation systems and methods utilizing sodium silicide a...
- Patent number 9,845,239
- Issue date Dec 19, 2017
- Intelligent Energy Limited
- Andrew P. Wallace
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Use of metal silicides in hydrocarbon production and transportation
- Patent number 9,677,392
- Issue date Jun 13, 2017
- Signa Chemistry, Inc.
- Paul H. Krumrine
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydrogen generation systems utilizing sodium silicide and sodium si...
- Patent number 9,669,371
- Issue date Jun 6, 2017
- Intelligent Energy Limited
- Andrew P. Wallace
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Enhanced crude oil recovery using metal silicides
- Patent number 9,657,549
- Issue date May 23, 2017
- Signa Chemistry, Inc.
- Paul H. Krumrine
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Foamed cement compositions containing metal silicides usable in sub...
- Patent number 9,494,012
- Issue date Nov 15, 2016
- Signa Chemistry, Inc.
- James S. Falcone
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Catalytic dehydration of alcohols using non-volatile acid catalysts
- Patent number 9,409,832
- Issue date Aug 9, 2016
- Signa Chemistry, Inc.
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Water reactive hydrogen generation system and method with separatio...
- Patent number 9,156,687
- Issue date Oct 13, 2015
- Intelligent Energy Limited
- Andrew P. Wallace
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Hydrogen generation systems and methods utilizing sodium silicide a...
- Patent number 9,102,528
- Issue date Aug 11, 2015
- Intelligent Energy Limited
- Andrew P. Wallace
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Hydrogen generation systems utilizing sodium silicide and sodium si...
- Patent number 9,079,146
- Issue date Jul 14, 2015
- Intelligent Energy Limited
- Andrew P. Wallace
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Catalytic dehydration of alcohols using non-volatile acid catalysts
- Patent number 9,040,741
- Issue date May 26, 2015
- Signa Chemistry, Inc.
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Catalytic dehydration of alcohols using phase pure, calcined single...
- Patent number 9,012,709
- Issue date Apr 21, 2015
- Signa Chemistry, Inc.
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Silicide compositions containing alkali metals and methods of makin...
- Patent number 8,986,643
- Issue date Mar 24, 2015
- SIGNa Chemistry, LLC
- Michael Lefenfeld
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Water reactive hydrogen fuel cell power system
- Patent number 8,895,204
- Issue date Nov 25, 2014
- Intelligent Energy Limited
- Andrew P. Wallace
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Catalytic dehydration of alcohols using phase pure, calcined single...
- Patent number 8,759,599
- Issue date Jun 24, 2014
- Signa Chemistry, Inc.
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Water reactive hydrogen fuel cell power system
- Patent number 8,632,928
- Issue date Jan 21, 2014
- Signa Chemistry, Inc.
- Andrew P. Wallace
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Silica gel compositions containing alkali metals and alkali metal a...
- Patent number 8,501,036
- Issue date Aug 6, 2013
- Signa Chemistry, Inc.
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Silicide compositions containing alkali metals and methods of makin...
- Patent number 8,372,371
- Issue date Feb 12, 2013
- Signa Chemistry, Inc.
- Michael Lefenfeld
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for deprotecting aryl or alkyl sulfonamides of primary or se...
- Patent number 8,263,808
- Issue date Sep 11, 2012
- Signa Chemistry, Inc.
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Lithium-porous metal oxide compositions and lithium reagent-porous...
- Patent number 8,197,707
- Issue date Jun 12, 2012
- Signa Chemistry LLC
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Silica gel compositions containing alkali metals and alkali metal a...
- Patent number 8,007,762
- Issue date Aug 30, 2011
- Signa Chemistry, Inc.
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Use of alkali metal-silica gel (M-SG) materials in solvent and mono...
- Patent number 7,932,329
- Issue date Apr 26, 2011
- Signa Chemistry, Inc.
- Mana Ito
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Titanium oxide and alumina alkali metal compositions
- Patent number 7,820,061
- Issue date Oct 26, 2010
- Signa Chemistry, Inc.
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Silicide compositions containing alkali metals and methods of makin...
- Patent number 7,811,541
- Issue date Oct 12, 2010
- Signa Chemistry, Inc.
- Michael Lefenfeld
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Silica gel compositions containing alkali metals and alkali metal a...
- Patent number 7,709,410
- Issue date May 4, 2010
- Signa Chemistry, Inc.
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Titanium oxide and alumina alkali metal compositions
- Patent number 7,560,606
- Issue date Jul 14, 2009
- Signa Chemistry, Inc.
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Silica gel compositions containing alkali metals and alkali metal a...
- Patent number 7,410,567
- Issue date Aug 12, 2008
- SIGNa Chemistry, LLC
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Titanium oxide and alumina alkali metal compositions
- Patent number 7,259,128
- Issue date Aug 21, 2007
- SIGNa Chemistry, LLC
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PREVENTING DECOMPOSITION IN SODIUM CYANIDE COMPOSITIONS
- Publication number 20230382751
- Publication date Nov 30, 2023
- CYANCO CORPORATION
- Michael Lefenfeld
- C01 - INORGANIC CHEMISTRY
Information Patent Application
ALKALI METAL CYANIDE PRODUCTION
- Publication number 20220017374
- Publication date Jan 20, 2022
- CYANCO CORPORATION
- Michael LEFENFELD
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
ALKALI METAL SILICIDES FOR HIGH TEMPERATURE WETTABILITY IMPROVEMENT...
- Publication number 20160265328
- Publication date Sep 15, 2016
- SIGNA CHEMISTRY, INC.
- Paul H. KRUMRINE
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
USE OF ALKALI METAL SILICIDES IN POST-CHOPS OILFIELD RECOVERY OPERA...
- Publication number 20160245060
- Publication date Aug 25, 2016
- SIGNA CHEMISTRY, INC.
- Paul H. KRUMRINE
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
TREATMENT OF ALKALI SILICA GEL AND ALKALI POROUS METAL OXIDE COMPOS...
- Publication number 20160045909
- Publication date Feb 18, 2016
- SIGNA CHEMISTRY, INC.
- Michael LEFENFELD
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
CATALYTIC DEHYDRATION OF ALCOHOLS USING PHASE PURE, CALCINED SINGLE...
- Publication number 20160008798
- Publication date Jan 14, 2016
- SIGNA CHEMISTRY, INC.
- Michael LEFENFELD
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
HYDROGEN GENERATION SYSTEMS AND METHODS UTILIZING SODIUM SILICIDE A...
- Publication number 20160002031
- Publication date Jan 7, 2016
- Intelligent Energy Limited
- Andrew P. Wallace
- C01 - INORGANIC CHEMISTRY
Information Patent Application
Water Reactive Hydrogen Generation System and Method With Separatio...
- Publication number 20150376002
- Publication date Dec 31, 2015
- Intelligent Energy Limited
- Andrew P. WALLACE
- C01 - INORGANIC CHEMISTRY
Information Patent Application
HYDROGEN GENERATION SYSTEMS UTILIZING SODIUM SILICIDE AND SODIUM SI...
- Publication number 20150329357
- Publication date Nov 19, 2015
- Intelligent Energy Limited
- Andrew P. Wallace
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CATALYTIC DEHYDRATION OF ALCOHOLS USING NON-VOLATILE ACID CATALYSTS
- Publication number 20150307413
- Publication date Oct 29, 2015
- SIGNA CHEMSTRY, INC.
- Michael LEFENFELD
- C07 - ORGANIC CHEMISTRY
Information Patent Application
SILICIDE COMPOSITIONS CONTAINING ALKALI METALS AND METHODS OF MAKIN...
- Publication number 20150299625
- Publication date Oct 22, 2015
- Michael LEFENFELD
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Application
FOAMED CEMENT COMPOSITIONS CONTAINING METAL SILICIDES USABLE IN SUB...
- Publication number 20150191993
- Publication date Jul 9, 2015
- SIGNA CHEMISTRY, INC.
- James S. Falcone
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
WATER REACTIVE HYDROGEN FUEL CELL POWER SYSTEM
- Publication number 20150061600
- Publication date Mar 5, 2015
- Intelligent Energy Limited
- Andrew P. Wallace
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CATALYTIC DEHYDRATION OF ALCOHOLS USING PHASE PURE, CALCINED SINGLE...
- Publication number 20140335013
- Publication date Nov 13, 2014
- SIGNA CHEMISTRY, INC.
- Michael LEFENFELD
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
LITHIUM-POROUS METAL OXIDE COMPOSITIONS AND LITHIUM REAGENT-POROUS...
- Publication number 20140306153
- Publication date Oct 16, 2014
- SIGNA CHEMISTRY, INC.
- Michael LEFENFELD
- C07 - ORGANIC CHEMISTRY
Information Patent Application
ENHANCED CRUDE OIL RECOVERY USING METAL SILICIDES
- Publication number 20140196896
- Publication date Jul 17, 2014
- SIGNA CHEMISTRY, INC.
- Paul H. Krumrine
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
USE OF METAL SILICIDES IN HYDROCARBON PRODUCTION AND TRANSPORTATION
- Publication number 20130341023
- Publication date Dec 26, 2013
- Paul H. KRUMRINE
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
HYDROGEN GENERATION SYSTEMS AND METHODS UTILIZING SODIUM SILICIDE A...
- Publication number 20130251626
- Publication date Sep 26, 2013
- SIGNA CHEMISTRY, INC.
- Andrew P. WALLACE
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
WATER REACTIVE HYDROGEN FUEL CELL POWER SYSTEM
- Publication number 20130230784
- Publication date Sep 5, 2013
- SIGNA CHEMISTRY, INC.
- Andrew P. WALLACE
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
WATER REACTIVE HYDROGEN GENERATION SYSTEM AND METHOD WITH SEPARATIO...
- Publication number 20120282166
- Publication date Nov 8, 2012
- Andrew P. WALLACE
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
LITHIUM-POROUS METAL OXIDE COMPOSITIONS AND LITHIUM REAGENT-POROUS...
- Publication number 20120235084
- Publication date Sep 20, 2012
- SIGNA CHEMISTRY, INC.
- Michael LEFENFELD
- C07 - ORGANIC CHEMISTRY
Information Patent Application
CATALYTIC DEHYDRATION OF ALCOHOLS USING NON-VOLATILE ACID CATALYSTS
- Publication number 20120220796
- Publication date Aug 30, 2012
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY
Information Patent Application
SILICIDE COMPOSITIONS CONTAINING ALKALI METALS AND METHODS OF MAKIN...
- Publication number 20120201734
- Publication date Aug 9, 2012
- Board of Trustees of Michigan State University
- Michael LEFENFELD
- F24 - HEATING RANGES VENTILATING
Information Patent Application
SILICA GEL COMPOSITIONS CONTAINING ALKALI METALS AND ALKALI METAL A...
- Publication number 20120199789
- Publication date Aug 9, 2012
- Board of Trustees of Michigan State University
- Michael LEFENFELD
- C07 - ORGANIC CHEMISTRY
Information Patent Application
WATER REACTIVE HYDROGEN FUEL CELL POWER SYSTEM
- Publication number 20120115054
- Publication date May 10, 2012
- Andrew P. WALLACE
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Application
Method and Composition for Reducing Exhaled Carbon Dioxide Emissions
- Publication number 20120027827
- Publication date Feb 2, 2012
- Michael Lefenfeld
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
SILICIDE COMPOSITIONS CONTAINING ALKALI METALS AND METHODS OF MAKIN...
- Publication number 20100316917
- Publication date Dec 16, 2010
- SIGNA CHEMISTRY, INC.
- Michael LEFENFELD
- F24 - HEATING RANGES VENTILATING
Information Patent Application
HYDROGEN GENERATION SYSTEMS UTILIZING SODIUM SILICIDE AND SODIUM SI...
- Publication number 20100247426
- Publication date Sep 30, 2010
- SIGNA CHEMISTRY, INC.
- Andrew P. Wallace
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
CATALYTIC DEHYDRATION OF ALCOHOLS USING PHASE PURE SINGLE- AND MULT...
- Publication number 20100249476
- Publication date Sep 30, 2010
- SIGNA CHEMISTRY, INC.
- Michael LEFENFELD
- C07 - ORGANIC CHEMISTRY
Information Patent Application
SILICA GEL COMPOSITIONS CONTAINING ALKALI METALS AND ALKALI METAL A...
- Publication number 20100166648
- Publication date Jul 1, 2010
- SIGNA CHEMISTRY, INC.
- Michael Lefenfeld
- C07 - ORGANIC CHEMISTRY

Michael Lefenfeld

Person

Patents Grantslast 30 patents

Alkali metal cyanide production

Use of alkali metal silicides in post-chops oilfield recovery opera...

Alkali metal silicides for high temperature wettability improvement...

Hydrogen generation systems and methods utilizing sodium silicide a...

Use of metal silicides in hydrocarbon production and transportation

Hydrogen generation systems utilizing sodium silicide and sodium si...

Enhanced crude oil recovery using metal silicides

Foamed cement compositions containing metal silicides usable in sub...

Catalytic dehydration of alcohols using non-volatile acid catalysts

Water reactive hydrogen generation system and method with separatio...

Hydrogen generation systems and methods utilizing sodium silicide a...

Hydrogen generation systems utilizing sodium silicide and sodium si...

Catalytic dehydration of alcohols using non-volatile acid catalysts

Catalytic dehydration of alcohols using phase pure, calcined single...

Silicide compositions containing alkali metals and methods of makin...

Water reactive hydrogen fuel cell power system

Catalytic dehydration of alcohols using phase pure, calcined single...

Water reactive hydrogen fuel cell power system

Silica gel compositions containing alkali metals and alkali metal a...

Silicide compositions containing alkali metals and methods of makin...

Method for deprotecting aryl or alkyl sulfonamides of primary or se...

Lithium-porous metal oxide compositions and lithium reagent-porous...

Silica gel compositions containing alkali metals and alkali metal a...

Use of alkali metal-silica gel (M-SG) materials in solvent and mono...

Titanium oxide and alumina alkali metal compositions

Silicide compositions containing alkali metals and methods of makin...

Silica gel compositions containing alkali metals and alkali metal a...

Titanium oxide and alumina alkali metal compositions

Silica gel compositions containing alkali metals and alkali metal a...

Titanium oxide and alumina alkali metal compositions

Patents Applicationslast 30 patents

PREVENTING DECOMPOSITION IN SODIUM CYANIDE COMPOSITIONS

ALKALI METAL CYANIDE PRODUCTION

ALKALI METAL SILICIDES FOR HIGH TEMPERATURE WETTABILITY IMPROVEMENT...

USE OF ALKALI METAL SILICIDES IN POST-CHOPS OILFIELD RECOVERY OPERA...

TREATMENT OF ALKALI SILICA GEL AND ALKALI POROUS METAL OXIDE COMPOS...

CATALYTIC DEHYDRATION OF ALCOHOLS USING PHASE PURE, CALCINED SINGLE...

HYDROGEN GENERATION SYSTEMS AND METHODS UTILIZING SODIUM SILICIDE A...

Water Reactive Hydrogen Generation System and Method With Separatio...

HYDROGEN GENERATION SYSTEMS UTILIZING SODIUM SILICIDE AND SODIUM SI...

CATALYTIC DEHYDRATION OF ALCOHOLS USING NON-VOLATILE ACID CATALYSTS

SILICIDE COMPOSITIONS CONTAINING ALKALI METALS AND METHODS OF MAKIN...

FOAMED CEMENT COMPOSITIONS CONTAINING METAL SILICIDES USABLE IN SUB...

WATER REACTIVE HYDROGEN FUEL CELL POWER SYSTEM

CATALYTIC DEHYDRATION OF ALCOHOLS USING PHASE PURE, CALCINED SINGLE...

LITHIUM-POROUS METAL OXIDE COMPOSITIONS AND LITHIUM REAGENT-POROUS...

ENHANCED CRUDE OIL RECOVERY USING METAL SILICIDES

USE OF METAL SILICIDES IN HYDROCARBON PRODUCTION AND TRANSPORTATION

HYDROGEN GENERATION SYSTEMS AND METHODS UTILIZING SODIUM SILICIDE A...

WATER REACTIVE HYDROGEN FUEL CELL POWER SYSTEM

WATER REACTIVE HYDROGEN GENERATION SYSTEM AND METHOD WITH SEPARATIO...

LITHIUM-POROUS METAL OXIDE COMPOSITIONS AND LITHIUM REAGENT-POROUS...

CATALYTIC DEHYDRATION OF ALCOHOLS USING NON-VOLATILE ACID CATALYSTS

SILICIDE COMPOSITIONS CONTAINING ALKALI METALS AND METHODS OF MAKIN...

SILICA GEL COMPOSITIONS CONTAINING ALKALI METALS AND ALKALI METAL A...

WATER REACTIVE HYDROGEN FUEL CELL POWER SYSTEM

Method and Composition for Reducing Exhaled Carbon Dioxide Emissions

SILICIDE COMPOSITIONS CONTAINING ALKALI METALS AND METHODS OF MAKIN...

HYDROGEN GENERATION SYSTEMS UTILIZING SODIUM SILICIDE AND SODIUM SI...

CATALYTIC DEHYDRATION OF ALCOHOLS USING PHASE PURE SINGLE- AND MULT...

SILICA GEL COMPOSITIONS CONTAINING ALKALI METALS AND ALKALI METAL A...