Inventor
OHKUBO TSUYOSHI
JP7 patents
⚠️ This page may combine multiple inventors who share the name “OHKUBO TSUYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOYA CORP
4 patentsUS5326501AJul 5, 1994
Polythiol compound, and optical material and product produced therefrom
HOYA CORP24 citations91
US5294666AMar 15, 1994
Polymer for optical products and process for preparation thereof
HOYA CORP20 citations91
US5403938AApr 4, 1995
Polythiol compound, and optical material and product produced therefrom
HOYA CORP11 citations72
US5118548AJun 2, 1992
Substrate for information-recording media
HOYA CORP5 citations59