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Patent US3443169A successfully refreshed from Google Patents.
US3443169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device
Assignee: Philips North America LLC
•
Filing: 1966-08-26
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Granted: 1969-05-06
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Expires: 1986-08-26
Abstract
No abstract record available.
Inventors
- 👤 Clive Arthur Peirson Foxell
- 👤 John Gilbert Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:02
CPC Classifications
H; H10; H10N; H10N80/00; H10N80/10; H10D; H10D99/00; H10W; H10W20/00; H10W20/40; H10W72/00; H10W72/90; H10W72/50; H10W72/531; H10W72/536; H10W72/551; H10W72/552; H10W72/5522; H10W72/59; Y; Y10; Y10S; Y10S148/00; Y10S148/05; Y10S148/056; Y10S148/085; Y10S148/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2858489A
Cited
US3065391A
Cited
US3365583A
Cited
US3290753A
Cited
US3359504A
Cited
US3322581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |