US3291759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-linear resistance material
Assignee: General Electric Co
•
Filing: 1963-12-13
•
Granted: 1966-12-13
•
Expires: 1983-12-13
Abstract
No abstract record available.
Inventors
- 👤 John J Pitha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:37
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/14; H01B1/18; H01B1/04; H01C; H01C7/00; H01C7/10; H01C7/105; H01C7/118
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
THE METHOD OF MAKING NON-LINEAR RESISTANCE MATERIAL FOR USE IN OVERVOLTAGE PROTECTIVE DEVICES COMPRISING PROVIDING A MIXTURE OF SILICON CARBIDE PARTICLES AND A CORDIERITE-FORMING BINDER MATERIAL THEREFORE, SAID MIXTURE CONSISTING ESSENTIALLY OF APPROXIMATELY 64 PARTS BY WEIGHT OF SILICON CARBIDE, 15-21 PARTS BY WEIGHT OF TALC, 21-14 PARTS BY WEIGHT OF A PORCELAIN MIXTURE, COMPACTING SAID MIXTURE AND FIRING SAID MIXTURE AT A TEMPERATURE OF ABOUT 1240*C. TO ABOUT 1260*C. IN A HYDROGEN ATMOSPHERE.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |