Inventor
Isato Watanabe
Inventor
Tokyo, JP
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G04Bprimary
G04BMechanically-driven clocks or watches22%
H01JElectric discharge tubes or discharge lamps17%
Y10TTechnical subjects covered by former us classification17%
G04CElectromechanical clocks or watches11%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables6%
G01DMeasuring not specially adapted for a specific variable6%
G04GElectronic time-pieces6%
H01FMagnets6%
H05KPrinted circuits6%
Y02PClimate change mitigation technologies in the production or processing of goods6%
PatentTitleYear
5,025,429'Electric power supply device for hand with load'19914,995,016'Timepiece with light emitting device'19914,995,022'Power supply device for hand with luminescence element'19914,993,005'Power supply system for luminous hands'19914,855,637'Oxidation resistant impregnated cathode'19894,796,239'Circuit unit for timepiece and process for fabricating the same'19894,783,613'Impregnated cathode'19884,745,682'Method of connecting coil'19884,737,679'Impregnated cathode'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–1991Patents assigned to SEIKOSHA KK (6)· patent assignee history
1988–1989Patents assigned to HITACHI LTD (3)· patent assignee history
1988–1991Based in Tokyo, JP· patent location history
1988–1989Based in Hachioji, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SEIKOSHA KK | 6 | 1988–1991 |
| HITACHI LTD | 3 | 1988–1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 6 | 1988–1991 |
| Hachioji, JP | 3 | 1988–1989 |