Patent US3478418A successfully refreshed from Google Patents.
US3478418A
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Fabrication of thin silicon device chips
Assignee: RTX Corp
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Filing: 1967-11-29
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Granted: 1969-11-18
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Expires: 1987-11-29
Abstract
No abstract record available.
Inventors
- 👤 Louis N Pomante
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:28
CPC Classifications
H; H10; H10W; H10W10/00; H10W10/01; H10W10/021; H10D; H10D62/00; H10D62/10; H10D62/117; H10P; H10P95/00; H10W10/011; H10W10/019; H10W10/10; H10W10/20; H10W72/00; H10W72/071; H10W72/072; H10W72/07231; H10W72/07236; Y; Y10; Y10S; Y10S148/00; Y10S148/051; Y10S148/085; Y10S438/00; Y10S438/977; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |