Inventor · disambiguated record
Yasuo Koyama
Also filed as: KOYAMA YASUO
4 granted patents·14 citations·filing 1984–2020
66Inventor score
Files withERMA OPTICAL WORKS1KOYAMA YASUO1KURASHIKI SYSTEM DESIGN CO LTD1SAITAMA BEE KEEPING CO LTD1
Top patents by PatentIndex Score
4 records- 0134US4680552AApparatus for measuring impurities in super-pure water without exposure to surrounding atmosphereERMA OPTICAL WORKS·Filed 1985·Granted Jul 14, 1987·7 cites·4 claims
- 0232US9452482B2Electrical discharge machineKOYAMA YASUO·Filed 2012·Granted Sep 27, 2016·0 cites·4 claims
- 0329US4588134AMethod of treating pollen for pulverization thereof and extraction of essence therefromSAITAMA BEE KEEPING CO LTD·Filed 1984·Granted May 13, 1986·7 cites·4 claims
- 0423USD989914SMixing nozzleKURASHIKI SYSTEM DESIGN CO LTD·Filed 2020·Granted Jun 20, 2023·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →