US2878152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grown junction transistors
Assignee: Texas Instruments Inc
•
Filing: 1956-11-28
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Granted: 1959-03-17
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Expires: 1976-11-28
Abstract
No abstract record available.
Inventors
- 👤 Walter R Runyan
- 👤 Robert E Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:20
CPC Classifications
H; H10; H10P; H10P95/00; C; C30; C30B; C30B15/00; C30B15/02; C30B15/04; H10D; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A GROWN JUNCTION TRANSISTOR BAR HAVING A COLLECTOR SEGMENT OF RELATIVELY LOW RESISTIVITY, A SECOND COLLECTOR SEGMENT ADJACENT THERETO OF THE ORDER OF .006 RO.010 INCH IN THICKNESS AND OF A RELATIVELY HIGH RESISTIVITY, A THIN BASE LAYER ADJACENT SAID SECOND COLLECTOR SEGMENT AND AN EMITTER SEGMENT ADJACENT THE BASE SEGMENT.
Claim 2
Dependent Claim
51 words
A GROWN JUNCTION TRANSISTOR BAR HAVING A COLLECTOR SEGMENT OF RELATIVELY LOW RESISTIVITY, A SECOND COLLECTOR SEGMENT ADJACENT THERETO OF THE ORDER OF .006 RO.010 INCH IN THICKNESS AND OF A RELATIVELY HIGH RESISTIVITY, A THIN BASE LAYER ADJACENT SAID SECOND COLLECTOR SEGMENT AND AN EMITTER SEGMENT ADJACENT THE BASE SEGMENT.
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) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |