US3408732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a semiconductor device
Assignee: General Electric Co
•
Filing: 1966-03-10
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Granted: 1968-11-05
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Expires: 1986-03-10
Abstract
No abstract record available.
Inventors
- 👤 James M Smith
- 👤 Tage P Sylvan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:31
CPC Classifications
H; H10; H10D; H10D99/00; H10W; H10W72/00; H10W72/20; H10W72/30; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/132; H10W76/15; H10W76/153; H10W72/071; H10W72/073; H10W72/07351; H10W72/07354; H10W72/341; H10W72/347; H10W72/50; H10W72/551; H10W72/552; H10W72/5524; H10W72/59; H10W72/851; H10W72/853; H10W72/856; H10W72/874; H10W72/884; H10W72/90; H10W72/951; H10W72/952; H10W90/00; H10W90/701; H10W90/751; H10W90/754
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2999194A
Cited
US3059158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |