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Otto C. Raspor
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Midland, MI, US
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Patents Grants
last 30 patents
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Patent Grant
Shaped articles containing copolymers of polybenzazoles
Patent number
5,273,823
Issue date
Dec 28, 1993
The Dow Chemical Company
Wen-Fang Hwang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Shaped articles containing copolymers of polybenzazoles
Patent number
5,217,809
Issue date
Jun 8, 1993
The Dow Chemical Company
Wen-Fang Hwang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for forming a plastic article from a plurality of layers of...
Patent number
4,931,121
Issue date
Jun 5, 1990
The Dow Chemical Company
Otto C. Raspor
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patent Grant
Method for preparing an asymmetric semi-permeable membrane
Patent number
4,873,037
Issue date
Oct 10, 1989
The Dow Chemical Company
C. C. Chau
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL