Inventor

YAMAZAKI HATSUTARO

JP7 patents

⚠️ This page may combine multiple inventors who share the name “YAMAZAKI HATSUTARO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MARUZEN OIL CO LTD

3 patents

US4517349AMay 14, 1985

Process for the production of p-vinyl phenol polymer

MARUZEN OIL CO LTD11 citations73

US4503271AMar 5, 1985

Process for the production of para-vinyl phenol by dehydrogenation of para-ethyl phenol

MARUZEN OIL CO LTD7 citations73

US4189603AFeb 19, 1980

Process for producing high-quality terephthalic acid suitable for use in direct polymerization

MARUZEN OIL CO LTD4 citations61

COSMO OIL CO LTD

2 patents

US6063265AMay 16, 2000

Process for producing hydrodesulfurization catalyst and hydrodesulfurizing gas oil therewith

COSMO OIL CO LTD61 citations92

US5531885AJul 2, 1996

Hydroconversion process for heavy hydrocarbon oil

COSMO OIL CO LTD6 citations61

COSMO OIL COMPANY & PETROLEUM

1 patent

US5002919AMar 26, 1991

Catalyst composition for hydrogenation of heavy hydrocarbon oil and process for producing the catalyst

COSMO OIL COMPANY & PETROLEUM94 citations91

MATSUYAMA PETROCHEMICALS INC

1 patent

US3956175AMay 11, 1976

Method for recovering a liquid-phase oxidation catalyst for preparation of terephthalic acid

MATSUYAMA PETROCHEMICALS INC19 citations71