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Henry S. Hopkins Jr.
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Ashland, OH, US
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last 30 patents
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Patent Grant
Polyisocyanurate foams of improved friability and process of prepar...
Patent number
4,568,701
Issue date
Feb 4, 1986
General Latex and Chemical Corporation
Henry S. Hopkins
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Reduced-friability, highly cross-linked, flame-resistant, polyureth...
Patent number
4,071,482
Issue date
Jan 31, 1978
General Latex and Chemical Corporation
Henry S. Hopkins
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyisocyanurate foams prepared by a cocatalyst system
Patent number
4,036,792
Issue date
Jul 19, 1977
General Latex and Chemical Corporation
Henry S. Hopkins
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyisocyanurate compositions and foams of improved friability and...
Patent number
4,033,908
Issue date
Jul 5, 1977
General Latex and Chemical Corporation
Henry S. Hopkins
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...