Inventor
Yasuji Okuda
Inventor
Osaka, JP
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Dprimary
C09DCoating compositions, e.g. paints, varnishes or lacquers67%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
C08LCompositions of macromolecular compounds8%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments8%
PatentTitleYear
5,762,694'Ink composition for marking pen'19985,716,217'Water base ink compositions for neon boards'19985,510,397'Aqueous pigment ink composition for writing utensils'19965,106,881'Water base pigment ink compositions for use in marking pens'19925,009,536'Water base pigment ink compositions for use in marking pens'19914,942,185'Water base pigment ink compositions for use in marking pens'19904,829,108'Solid coating compositions'19893,945,837'Ink composition'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1998Patents assigned to SAKURA COLOR PROD CORP (8)· patent assignee history
1976–1989Based in Hirakata, JP· patent location history
1990–1998Based in Osaka, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SAKURA COLOR PROD CORP | 8 | 1976–1998 |
Locations
| Location | Patents | Span |
|---|---|---|
| Osaka, JP | 6 | 1990–1998 |
| Hirakata, JP | 2 | 1976–1989 |