Inventor · disambiguated record
Hatsutaro Yamazaki
Also filed as: SHIGEYASU MOTOO · YAMAZAKI HATSUTARO
7 granted patents·202 citations·filing 1974–1997
87Inventor score
Files withMARUZEN OIL CO LTD3COSMO OIL CO LTD2COSMO OIL COMPANY & PETROLEUM1MATSUYAMA PETROCHEMICALS INC1
Top patents by PatentIndex Score
7 records- 0189US5002919ACatalyst composition for hydrogenation of heavy hydrocarbon oil and process for producing the catalystCOSMO OIL COMPANY & PETROLEUM·Filed 1989·Granted Mar 26, 1991·94 cites·34 claims
- 0284US3956175AMethod for recovering a liquid-phase oxidation catalyst for preparation of terephthalic acidMATSUYAMA PETROCHEMICALS INC·Filed 1974·Granted May 11, 1976·19 cites·21 claims
- 0378US6063265AProcess for producing hydrodesulfurization catalyst and hydrodesulfurizing gas oil therewithCOSMO OIL CO LTD·Filed 1997·Granted May 16, 2000·61 cites·24 claims
- 0465US4503271AProcess for the production of para-vinyl phenol by dehydrogenation of para-ethyl phenolMARUZEN OIL CO LTD·Filed 1983·Granted Mar 5, 1985·7 cites·11 claims
- 0556US4517349AProcess for the production of p-vinyl phenol polymerMARUZEN OIL CO LTD·Filed 1983·Granted May 14, 1985·11 cites·12 claims
- 0639US4189603AProcess for producing high-quality terephthalic acid suitable for use in direct polymerizationMARUZEN OIL CO LTD·Filed 1978·Granted Feb 19, 1980·4 cites·23 claims
- 0737US5531885AHydroconversion process for heavy hydrocarbon oilCOSMO OIL CO LTD·Filed 1995·Granted Jul 2, 1996·6 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →