US2750541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor translating device
Assignee: AT&T Inc
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Filing: 1950-01-31
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Granted: 1956-06-12
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Expires: 1970-01-31
Abstract
No abstract record available.
Inventors
- 👤 Russell S Ohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:57
CPC Classifications
H; H10; H10D; H10D99/00; B; B60; B60T; B60T13/00; B60T13/10; B60T13/58; B60T17/00; B60T17/04; H01; H01J; H01J37/00; H01J37/30; H01J37/317; H01J37/3171; H10F; H10F99/00; H10P; H10P95/00; Y; Y10; Y10S; Y10S164/00; Y10S164/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
AN ELECTRICAL TRANSLATING DEVICE COMPRISING A BODY OF SEMICONDUCTIVE MATERIAL SELECTED FROM THE CLASS CONSISTING OF SILICON AND GERMAMIUM, AN INTEGRAL SURFACE LAYER ON SAID SEMICONDUCTIVE BODY HAVING ELECTRICAL CHARACTERISTICS OTHER THAN THOSE OF SAID BODY, PRODUCED BY BOMBARDMENT THEREOF WITH IONS OF SIGNIFICANT IMPURITIES, AN OHMIC CONNECTION TO SAID BODY ON A PORTION SPACED FROM SAID LAYER, AND A LARGE AREA CONTACT ENGAGING SAID LAYER.
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) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |