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Francis U. Hill
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San Diego, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for manufacturing dimpled structures from elas...
Patent number
5,192,810
Issue date
Mar 9, 1993
Sorrento Engineering Corporation
Francis U. Hill
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyimide foam filled structures
Patent number
5,188,879
Issue date
Feb 23, 1993
Sorrento Engineering Corporation
Francis U. Hill
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method of impregnating reticulated foam with polymide foam and prod...
Patent number
5,135,959
Issue date
Aug 4, 1992
Sorrento Engineering Corporation
Francis U. Hill
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method of improving foam fire resistance through the introduction o...
Patent number
5,047,436
Issue date
Sep 10, 1991
Sorrento Engineering Corporation
Francis U. Hill
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of improving foam fire resistance through the introduction o...
Patent number
5,011,558
Issue date
Apr 30, 1991
Sorrento Engineering Corporation
Francis U. Hill
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of improving foam fire resistance through the introduction o...
Patent number
5,000,813
Issue date
Mar 19, 1991
Sorrento Engineering, Inc.
Francis U. Hill
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of improving foam fire resistance through the introduction o...
Patent number
4,988,739
Issue date
Jan 29, 1991
Sorrento Engineering, Inc.
Francis U. Hill
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of manufacturing polyimide foam shapes having improved densi...
Patent number
4,980,004
Issue date
Dec 25, 1990
Sorrento Engineering, Inc.
Francis U. Hill
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyetherimide foam precursors and foams having improved physical p...
Patent number
4,980,389
Issue date
Dec 25, 1990
Irbit Research & Consulting A.G.
Francis U. Hill
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of manufacturing polyimide foam shapes having improved densi...
Patent number
4,980,102
Issue date
Dec 25, 1990
Sorrento Engineering, Inc.
Francis U. Hill
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of making porous inorganic particle filled polyimide foam in...
Patent number
4,978,690
Issue date
Dec 18, 1990
Sorrento Engineering, Inc.
Francis U. Hill
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method of improving foam fire resistance through the introduction o...
Patent number
4,962,132
Issue date
Oct 9, 1990
Sorrento Engineering Corporation
Francis U. Hill
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of improving foam fire resistance through the introduction o...
Patent number
4,935,452
Issue date
Jun 19, 1990
Sorrento Engineering, Inc.
Francis U. Hill
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of manufacturing polyimide foam shapes having improved densi...
Patent number
4,923,651
Issue date
May 8, 1990
Sorrento Engineering, Inc.
Francis U. Hill
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method of making porous inorganic particle filled polyimide foam in...
Patent number
4,923,538
Issue date
May 8, 1990
Sorrento Engineer, Inc.
Frank U. Hill
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method of making porous inorganic particle filled polyimide foam in...
Patent number
4,923,907
Issue date
May 8, 1990
Sorrento Engineering, Inc.
Francis U. Hill
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method of making porous inorganic particle filled polyimide foam in...
Patent number
4,865,784
Issue date
Sep 12, 1989
Francis U. Hill
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL