Patent US2662997A successfully refreshed from Google Patents.
US2662997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting for semiconductors
Assignee: AT&T Inc
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Filing: 1951-11-23
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Granted: 1953-12-15
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Expires: 1971-11-23
Abstract
No abstract record available.
Inventors
- 👤 Christensen Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:37
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/30; H10W72/071; H10W72/073; H10W72/07331; H10W72/07336; H10W72/351; H10W72/352; H10W90/00; H10W90/701; H10W90/751; H10W90/753; H10W90/754
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
IN A COMBINATION, A SEMICONDUCTOR BODY OF MATERIAL SELECTED FROM THE GROUP INCLUDING GERMANIUM AND SILICON, AND A METALLIC BASE MEMBER TO WHICH SAID BODY IS BONDED, THE MATERIAL OF SAID BASE MEMBER HAVING A THERMAL COEFFICIENT OF EXPANSION OF ABOUT THE SAME VALUE AS THAT OF THE
Claim 2
Dependent Claim
48 words
IN A COMBINATION, A SEMICONDUCTOR BODY OF MATERIAL SELECTED FROM THE GROUP INCLUDING GERMANIUM AND SILICON, AND A METALLIC BASE MEMBER TO WHICH SAID BODY IS BONDED, THE MATERIAL OF SAID BASE MEMBER HAVING A THERMAL COEFFICIENT OF EXPANSION OF ABOUT THE SAME VALUE AS THAT OF THE
References Cited (Backward Citations)
GB291026A
Cited
US1905703A
Cited
DE590284C
Cited
US2243573A
Cited
US2330594A
Cited
US2328488A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |