US3531858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of simultaneously producing a multiplicity of semiconductor devices
Assignee: Siemens AG
•
Filing: 1967-09-21
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Granted: 1970-10-06
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Expires: 1987-09-21
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Lutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:58
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/30; H10P; H10P95/00; H10W70/00; H10W70/01; H10W70/04; H10W72/071; H10W74/00; H10W74/10; H10W74/131; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/138; H10W72/073; H10W72/07331; H10W72/07336; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169; Y10T29/49171; Y10T29/4981
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3080640A
Cited
US3155936A
Cited
US2994121A
Cited
US3209433A
Cited
US3264715A
Cited
US3270399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |