US3024435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-conductive element
Assignee: Specialties Development Corp
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Filing: 1960-02-03
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Granted: 1962-03-06
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Expires: 1980-02-03
Abstract
No abstract record available.
Inventors
- 👤 Rollins James Edgar
- 👤 Rakowski Alexander Joseph
- 👤 Jr John Conrad Zenobia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:38
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/10; H01C7/105; H01B; H01B1/00; H01B1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A SEMI-CONDUCTOR HAVING THE CHARACTERISTICS OF A VARISTOR COMPRISING A BODY FORMED OF A RESISTANCE MATERIAL CONSISTING ESSENTIALLY OF BETWEEN ABOUT 70% AND ABOUT 96% BY WEIGHT OF MANGANESE DIOXIDE AND BETWEEN ABOUT 30% AND ABOUT 4% BY WEIGHT CUPRIC OXIDE; AND SPACED PARALLEL CONDUCTIVE TERMINAL WIRES EMBEDDED IN
Claim 2
Dependent Claim
49 words
A SEMI-CONDUCTOR HAVING THE CHARACTERISTICS OF A VARISTOR COMPRISING A BODY FORMED OF A RESISTANCE MATERIAL CONSISTING ESSENTIALLY OF BETWEEN ABOUT 70% AND ABOUT 96% BY WEIGHT OF MANGANESE DIOXIDE AND BETWEEN ABOUT 30% AND ABOUT 4% BY WEIGHT CUPRIC OXIDE; AND SPACED PARALLEL CONDUCTIVE TERMINAL WIRES EMBEDDED IN
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) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |