Patent US3495324A successfully refreshed from Google Patents.
US3495324A
Expired / Lapsed
US
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Ohmic contact for planar devices
Assignee: Unisys Corp
•
Filing: 1967-11-13
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Granted: 1970-02-17
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Expires: 1987-11-13
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Guthrie
- 👤 Robert Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:53
CPC Classifications
H; H10; H10W; H10W20/00; H10W20/40; H10W72/00; H10W72/071; H10W72/072; H10W72/07231; H10W72/07236; H10W72/20; H10W72/251; H10W72/252; H10W72/50; H10W72/551; H10W72/552; H10W72/5522; H10W72/5524; Y; Y10; Y10S; Y10S148/00; Y10S148/018; Y10S148/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3231421A
Cited
US3429029A
Cited
US3339274A
Cited
US3383568A
Cited
US3392442A
Cited
US3413157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |