Brian G. Risch

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Milford, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Optical terpolymer of polyisocyanate, polythiol and polyene monomers
- Patent number 6,777,494
- Issue date Aug 17, 2004
- Optima Inc.
- Zhou Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical terpolymer of polyisocyanate, polythiol and polyene monomers
- Patent number 6,008,296
- Issue date Dec 28, 1999
- Optima, Inc.
- Zhou Yang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical thermoplastic thiourethane-urethane copolymers
- Patent number 5,679,756
- Issue date Oct 21, 1997
- Optima Inc.
- Zhenya Zhu
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...