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US3380936A
Expired / Lapsed
US
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Silicon carbide varistors
Assignee: Panasonic Holdings Corp
•
Filing: 1965-10-18
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Granted: 1968-04-30
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Expires: 1985-10-18
Abstract
No abstract record available.
Inventors
- 👤 Masuyama Takeshi
- 👤 Matsuoka Michio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:23
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/10; H01C7/105; H01C7/118; H01B; H01B1/00; H01B1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2143414A
Cited
US2205308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |