US3404073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming aligned oxide patterns on opposite surfaces of a wafer of semiconductor material
Assignee: RCA Corp
•
Filing: 1965-09-15
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Granted: 1968-10-01
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Expires: 1985-09-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph H Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:13
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6302; H10P14/6304; H10P14/6306; H10P14/6308; H10P14/6309; H10P14/6324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3345274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |