David W. Okey

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Downers Grove, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Polyimide foam and process for the preparation of same
- Patent number 4,562,112
- Issue date Dec 31, 1985
- Imi-Tech Corporation
- Raymond Lee
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyimide foam prepared from amino terminated butadiene acrylonitri...
- Patent number 4,539,342
- Issue date Sep 3, 1985
- Imi-Tech Corporation
- Raymond Lee
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyimide foam from mixture of silicon containing diamine and diffe...
- Patent number 4,535,099
- Issue date Aug 13, 1985
- Imi-Tech Corporation
- Raymond Lee
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyimide composite
- Patent number 4,468,431
- Issue date Aug 28, 1984
- IML Corporation
- David W. Okey
- G10 - MUSICAL INSTRUMENTS ACOUSTICS