Richard C. Hartwig

Person

Laurel, MD, US

People

Patents Grantslast 30 patents

Information Patent Grant
Battery separator
- Patent number 5,389,433
- Issue date Feb 14, 1995
- W. R. Grace & Co.-Conn.
- Victor S. C. Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Battery separator
- Patent number 5,389,463
- Issue date Feb 14, 1995
- W. R. Grace & Co.-Conn.
- Victor S. Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Battery separator
- Patent number 5,362,581
- Issue date Nov 8, 1994
- W. R. Grace & Co.-Conn.
- Victor S. Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Battery separator
- Patent number 5,362,582
- Issue date Nov 8, 1994
- W. R. Grace & Co.-Conn.
- Victor S. Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Microporous polyurethane based battery separator
- Patent number 5,346,788
- Issue date Sep 13, 1994
- W. R. Grace & Co.-Conn.
- Victor S. C. Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Polyurethane-poly (vinylchloride) interpenetrating network
- Patent number 5,091,455
- Issue date Feb 25, 1992
- W. R. Grace & Co.-Conn.
- Norman E. Blank
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyurethane coatings for bridge deckings and the like
- Patent number 4,855,185
- Issue date Aug 8, 1989
- W. R. Grace & Co.-Conn.
- Cung Vu
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyurethane composition consisting essentially of a polyether diol...
- Patent number 4,804,734
- Issue date Feb 14, 1989
- W. R. Grace & Co.-Conn.
- Cung Vu
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyurethane coatings for bridge deckings and the like
- Patent number 4,788,269
- Issue date Nov 29, 1988
- W. R. Grace & Co.-Conn.
- Cung Vu
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Richard C. Hartwig

Person

Patents Grantslast 30 patents

Battery separator

Battery separator

Battery separator

Battery separator

Microporous polyurethane based battery separator

Polyurethane-poly (vinylchloride) interpenetrating network

Polyurethane coatings for bridge deckings and the like

Polyurethane composition consisting essentially of a polyether diol...

Polyurethane coatings for bridge deckings and the like