Inventor
Sadao Chigira
Inventor
Chiba, JP
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus43%
G06KGraphical data reading29%
C09DCoating compositions, e.g. paints, varnishes or lacquers14%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
PatentTitleYear
5,686,725'Method for reading of invisible marking'19975,547,501'Method for formation of invisible marking and method for reading of invisible marking'19964,896,941'Image-transmitting fiber'19904,770,493'Heat and radiation resistant optical fiber'19884,707,075'Very-low-temperature fiberscope'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–1997Patents assigned to FUJIKURA LTD (5)· patent assignee history
1987Patents assigned to TOSHIBA KK (1)· patent assignee history
1987–1997Based in Chiba, JP· patent location history
1988–1990Patents assigned to DORYOKURO KAKUNENRYO (2)· patent assignee history
1996–1997Patents assigned to KANSAI PAINT CO LTD (2)· patent assignee history
1996–1997Patents assigned to MATSUO SANGYO KK (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUJIKURA LTD | 5 | 1987–1997 |
| DORYOKURO KAKUNENRYO | 2 | 1988–1990 |
| KANSAI PAINT CO LTD | 2 | 1996–1997 |
| MATSUO SANGYO KK | 2 | 1996–1997 |
| TOSHIBA KK | 1 | 1987 |
Locations
| Location | Patents | Span |
|---|---|---|
| Chiba, JP | 5 | 1987–1997 |