Inventor
Toshiaki Kishimoto
Inventor
Osaka, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Bprimary
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments80%
C07CAcyclic or carbocyclic compounds20%
PatentTitleYear
5,416,263'Process for producing 4,4\'-Diamino-1,1\'-dianthraquinonyl pigments'19955,393,899'Process for purification of crude 4,4\'-diamino-1,1\'-dianthraquinonyl-3,3\'-disulfonic acids and salts thereof'19955,320,678'Process for producing 4,4\'-diamino-1,1,\'-dianthraquinonyl pigments'19944,785,091'Process for producing copper phthalocyanine pigment'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–1995Patents assigned to SUMITOMO CHEMICAL CO (3)· patent assignee history
1988–1995Based in Osaka, JP· patent location history
1995Patents assigned to SUMIMOTO CHEMICAL COMPANY LIMI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SUMITOMO CHEMICAL CO | 3 | 1988–1995 |
| SUMIMOTO CHEMICAL COMPANY LIMI | 1 | 1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Osaka, JP | 4 | 1988–1995 |