US3402131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermistor composition containing vanadium dioxide
Assignee: Hitachi Ltd
•
Filing: 1965-07-27
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Granted: 1968-09-17
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Expires: 1985-07-27
Abstract
No abstract record available.
Inventors
- 👤 Futaki Hisao
- 👤 Kobayashi Kazuo
- 👤 Aoki Minoru
- 👤 Shimoda Takeshi
- 👤 Yamada Eizaburo
- 👤 Narita Koziro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:45
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/04; H01C7/042; H01C7/043; H01C7/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |