Tsuyoshi Ohkubo

Follow

Person

Hachioji, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Polythiol compound, and optical material and product produced there...
- Patent number 5,403,938
- Issue date Apr 4, 1995
- Hoya Corporation
- Tsuyoshi Ohkubo
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polythiol compound, and optical material and product produced there...
- Patent number 5,326,501
- Issue date Jul 5, 1994
- Hoya Corporation
- Tsuyoshi Ohkubo
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polymer for optical products and process for preparation thereof
- Patent number 5,294,666
- Issue date Mar 15, 1994
- Hoya Corporation
- Reisuke Okada
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Substrate for information-recording media
- Patent number 5,118,548
- Issue date Jun 2, 1992
- Hoya Corporation
- Tsuyoshi Ohkubo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...