Inventor · disambiguated record

Yasujiro Koyama

Also filed as: KOYAMA YASUJIRO

2 granted patents·22 citations·filing 1975–1980

59Inventor score

Technology areasC04B F28D

Files withNIPPON KOKAN KK2

Top patents by PatentIndex Score

2 records

0155US4075812ARefractory checkerworkNIPPON KOKAN KK·Filed 1975·Granted Feb 28, 1978·17 cites·6 claims
0232US4334858APrevention of thermal spalling in ceramic productsNIPPON KOKAN KK·Filed 1980·Granted Jun 15, 1982·5 cites·10 claims

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