US3119362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloying fixture
Assignee: Clevite Corp
•
Filing: 1959-12-24
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Granted: 1964-01-28
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Expires: 1979-12-24
Abstract
No abstract record available.
Inventors
- 👤 Linstedt Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:12
CPC Classifications
H; H10; H10P; H10P95/00; C; C30; C30B; C30B31/00; C30B31/04; H10P95/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
161 words
A FIXTURE FOR ALLOYING RECTIFYING JUNCTIONS ONTO SEMICONDUCTOR WAFERS COMPRISING: AN ALLOYING BOAT CONTAINING A BORE OF SUBSTANTIAL LENGTH AND OPEN AT AT LEAST ONE END; MEANS FOR SUPPORTING A SEMICONDUCTOR WAFER WITHIN SAID BORE IN A PLANE SUBSTANTIALL PERPENDICULAR TO THE LOGITUDINAL AXIS OF SAID BORE; AN OPEN-ENDED HOLLOW PLUG MEMBER ADAPTED TO BE COAXIALLY RECEIVED WITHIN SAID BORE AND ADAPTED TO CONTAIN A BODY OF ALLOYING MATERIAL AND TO DEFINE THE REGION TO BE ALLOYED ON THE WATER, THE AXIAL DIMENSION OF SAID PLUG MEMBER BEING SUBSTANTIALLY LESS THAN THAT OF SAID BORE; A PROTUSION ON SAID BOAT ADJACENT THE WAFER WHEN SUPPORTED IN SAID BORE AND EXTENDING TOWARD THE EXTREMITY OF SAID WAFER DEFINING A PREFERRED HEAT CONDUCTION PATH FROM THE EXTREMITY OF SAID WAFER TO THE OUTER PORTION OF SAID BOAT; AND THERMAL HEAT-SHIELDING MEANS WITHIN SAID BORE ENCLOSING AT LEAST PARTIALLY THE PLUG AND BORE TO SUBSTANTIALLY DETER HEAT CONDUCTION FROM THE WAFER ALONG OTHER PATHS.
References Cited (Backward Citations)
US2942568A
Cited
US2943005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |