Inventor

IDAI TSUTOMU

JP3 patents

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

MARUZEN PETROCHEM CO LTD

2 patents

US4927979AMay 22, 1990

Process for the preparation of p-ethylphenol

MARUZEN PETROCHEM CO LTD49 citations90

US4847435AJul 11, 1989

Process for the recovery of high-purity m-ethylphenol

MARUZEN PETROCHEM CO LTD2 citations57

MARUZEN OIL CO LTD

1 patent

US4024076AMay 17, 1977

Process for producing granular sulfurized material, granular carbon or granular activated carbon

MARUZEN OIL CO LTD19 citations69