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US3389023A
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Methods of making a narrow emitter transistor by masking and diffusion
Assignee: International Business Machines Corp
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Filing: 1966-01-14
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Granted: 1968-06-18
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Expires: 1986-01-14
Abstract
No abstract record available.
Inventors
- 👤 Jack L Langdon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:20
CPC Classifications
H; H10; H10D; H10D10/00; C; C30; C30B; C30B31/00; H10D1/00; H10D1/40; H10D99/00; H10P; H10P32/00; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/043; Y10S148/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3281915A
Cited
US3319311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |