Inventor · disambiguated record
Yasuhiko Hirayama
Also filed as: HIRAYAMA YASUHIKO
6 granted patents·1,221 citations·filing 1987–1991
89Inventor score
Files withASAHI OPTICAL CO LTD6
Top patents by PatentIndex Score
6 records- 0195US4946378AArtificial intervertebral discASAHI OPTICAL CO LTD·Filed 1988·Granted Aug 7, 1990·862 cites·12 claims
- 0291US5017518AProcess for producing calcium phosphate ceramics having porous surfaceASAHI OPTICAL CO LTD·Filed 1990·Granted May 21, 1991·125 cites·7 claims
- 0385US4798585ASupport for biomedical implant deviceASAHI OPTICAL CO LTD·Filed 1987·Granted Jan 17, 1989·143 cites·17 claims
- 0478US5128146AApatite coated article and process for producing the sameASAHI OPTICAL CO LTD·Filed 1991·Granted Jul 7, 1992·49 cites·7 claims
- 0561US5089195AMethod for producing calcium phosphate-based materialASAHI OPTICAL CO LTD·Filed 1990·Granted Feb 18, 1992·22 cites·8 claims
- 0645US4957674AMethod for producing calcium phosphate-based materialASAHI OPTICAL CO LTD·Filed 1988·Granted Sep 18, 1990·20 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →