Patent US2673312A successfully refreshed from Google Patents.
US2673312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device
Assignee: Stromberg Carlson Corp
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Filing: 1952-12-04
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Granted: 1954-03-23
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Expires: 1972-12-04
Abstract
No abstract record available.
Inventors
- 👤 Newton H Odell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:23
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/40; H10W74/43; H10D; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
IN A SEMI-CONDUCTOR DEVICE, THE COMBINATION OF SEMI-CONDUCTING BODY; A BASE ELECTRODE IN CONTACT WITH SAID BODY; A COLLECTOR ELECTORDE IN CONTACT WITH SAID BODY; A LAYER OF TITANIUM DIOXIDE COVERING AT LEAST A PORTION OF THE AREA OF SAID BODY; AND AN EMITTER ELECTRODE IN CONTACT WITH SAID LAYER.
Claim 2
Dependent Claim
50 words
IN A SEMI-CONDUCTOR DEVICE, THE COMBINATION OF SEMI-CONDUCTING BODY; A BASE ELECTRODE IN CONTACT WITH SAID BODY; A COLLECTOR ELECTORDE IN CONTACT WITH SAID BODY; A LAYER OF TITANIUM DIOXIDE COVERING AT LEAST A PORTION OF THE AREA OF SAID BODY; AND AN EMITTER ELECTRODE IN CONTACT WITH SAID LAYER.
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) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |