Inventor
Fumitaka Watanabe
Inventor
Tsukuba, JP
Overview
Patents· 2 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C04Bprimary
C04BLime, magnesia50%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them50%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978Patents assigned to OLYMPUS OPTICAL CO (1)· patent assignee history
1978Based in Hachiouji, JP· patent location history
2004Patents assigned to MITSUBISHI GAS CHEMICAL CO (1)· patent assignee history
2004Based in Tsukuba, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MITSUBISHI GAS CHEMICAL CO | 1 | 2004 |
| OLYMPUS OPTICAL CO | 1 | 1978 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tsukuba, JP | 1 | 2004 |
| Hachiouji, JP | 1 | 1978 |