Inventor

MASAOKA TOSHIHIRO

JP8 patents

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

YAMAMOTO CHEMICALS INC

3 patents

US5973140AOct 26, 1999

Phthalocyanine compound, its intermediate, process for producing the compound, and use thereof

YAMAMOTO CHEMICALS INC5 citations71

US5627287AMay 6, 1997

Phthalide compound and a near infrared absorber and a recording material each comprising the same compound

YAMAMOTO CHEMICALS INC7 citations68

US6093832AJul 25, 2000

Diiminoisoindoline compound and the process for producing the compound and use thereof

YAMAMOTO CHEMICALS INC1 citations50

MITSUI CHEMICALS INC

2 patents

US6162520ADec 19, 2000

Optical recording medium and dipyrromethene metal chelate compound for use therein

MITSUI CHEMICALS INC6 citations72

US6355327B1Mar 12, 2002

Optical recording medium and dipyrromethene metal chelate compound for use therein

MITSUI CHEMICALS INC0 citations51

MITSUI TOATSU CHEMICALS

2 patents

US5334714AAug 2, 1994

Method for preparing alkoxyphthalocyanine

MITSUI TOATSU CHEMICALS4 citations62

US5220010AJun 15, 1993

Method for preparation alkoxyphthalocyanine

MITSUI TOATSU CHEMICALS3 citations60

YAMAGUCHI RYOJI

1 patent

US8888906B2Nov 18, 2014

Heat-sensitive color-developing composition and heat-sensitive recording material comprising the composition

YAMAGUCHI RYOJI1 citations49