Patent US3438121A successfully refreshed from Google Patents.
US3438121A
Expired / Lapsed
US
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Method of making a phosphorous-protected semiconductor device
Assignee: Arris Technology Inc
•
Filing: 1966-07-21
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Granted: 1969-04-15
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Expires: 1986-07-21
Abstract
No abstract record available.
Inventors
- 👤 Frank M Wanlass
- 👤 Robert M Shultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:11
CPC Classifications
H; H10; H10W; H10W20/00; H10W20/40; H10D; H10D99/00; H10W74/00; H10W74/40; H10W74/43; Y; Y10; Y10S; Y10S148/00; Y10S148/043; Y10S438/00; Y10S438/942; Y10S438/948; Y10S438/95
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2916806A
Cited
US3093882A
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US3044147A
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US2981877A
Cited
US3193418A
Cited
US3241931A
Cited
US3287612A
Cited
US3266127A
Cited
US3349300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |