US3556879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating semiconductor devices
Assignee: RCA Corp
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Filing: 1968-03-20
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Granted: 1971-01-19
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Expires: 1988-03-20
Abstract
Abstract THE STABILITY AND MINORITY CARRIER LIFETIME OF A DEVICE COMPRISING A SEMICONDUCTOR BODY COVERED BY AN INSULATING LAYER IS IMPROVED BY SUBJECTING THE INSULATING LAYER TO AN ATMOSPHERE INCLUDING HYDROGEN CHLORIDE, WHILE HEATING THE DEVICE, SO THAT A GRADIENT IS ESTABLISHED FOR OUT-DIFFUSION OF CERTAIN DELETERIOUS METALS FROM THE DEVICE.
Inventors
- 👤 Alfred Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:35
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6302; H10P14/6304; H10P14/6306; H10P14/6308; H10P14/6309; H10P14/6322; H10P14/6326; H10P14/6328; H10P14/6334; H10P14/65; H10P14/6516; H10P14/6529; H10P14/69; H10P14/692; H10P14/6921; H10P14/69215; H10P95/00; H10W; H10W74/00; H10W74/40; H10W74/43; H10P14/66; H10P14/668; H10P14/6681; H10P14/6682; H10P14/694; H10P14/6943; H10P14/69433; Y; Y10; Y10S; Y10S148/00; Y10S148/043; Y10S148/118; Y10S438/00; Y10S438/909
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |