US3764414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Open tube diffusion in iii-v compunds
Assignee: International Business Machines Corp
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Filing: 1972-05-01
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Granted: 1973-10-09
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Expires: 1992-05-01
Abstract
Abstract AN OPEN TUBE PROCESS IS USED OF ZN DIFFUSION IN III-V COMPOUNDS COATED WITH SIO2 FILMS TO FORM P-N JUNCTIONS. ELECTROLUMINESCENT DIODES MADE BY THIS METHOD HAVE HIGH BRIGHTNESS WITH NO ETCHING OF THE P-N JUNCTION SURFACE REQUIRED.
Inventors
- 👤 J Blum
- 👤 K Shih
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:18
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; H10P14/69; H10P14/692; H10P14/6921; H10P14/69215; H10H; H10H20/00; H10H20/80; H10P14/63; H10P14/6326; H10P14/6328; H10P14/6334; H10P32/00; H10P32/10; H10P32/12; H10P32/17; H10P32/174; Y; Y10; Y10S; Y10S148/00; Y10S148/065
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |