US2806005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark gap semi-conductors
Assignee: Bendix Aviation Corp
•
Filing: 1951-09-28
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Granted: 1957-09-10
•
Expires: 1971-09-28
Abstract
No abstract record available.
Inventors
- 👤 Robert C White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:08
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/04; H01T; H01T13/00; H01T13/52
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
42 words
A SPARK GAP SEMI-CONDUCTOR CONSISTING ESSENTIALLY OF FROM 40-91% SILICON CARBIDE, FROM 4-40% OF AN OXIDE OF A HEAVY METAL SELECTED FROM TEH GROUP CONSISTING OF CHROMIUM, MANGANESE, IRON, COBALT, NICKEL, AND MOLYBDENUM, AND FROM 5-25% ALUMINA, ALL PERCENTAGES BEING BY WEIGHT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |