Patent US2352168A successfully refreshed from Google Patents.
Patent US2881103A successfully refreshed from Google Patents.
US2881103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of semi-conductor devices
Assignee: The General Electric Company PLC
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Filing: 1956-12-17
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Granted: 1959-04-07
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Expires: 1976-12-17
Abstract
No abstract record available.
Inventors
- 👤 Brand Denis John
- 👤 Ewels John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:11
CPC Classifications
H; H10; H10P; H10P95/00; H10P95/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A METHOD OF FORMING AN ELECTRODE IN THE MANUFACTURE OF A SEMICONDUCTOR DEVICE, COMPRISING THE STEPS OF FIRST MELTING TIN IN CONTACT WITH A SOLID BODY OF SILICON AND SIMULTANEOUSLY IN CONTACT WITH A SMALL QUANTITY OF A MATERIAL WHICH CONSISTS AT LEAST PARTLY OF ALUMINIUM AND WHICH CONTAINS NO APPRECIABLE AMOUNT OF ANY ELEMENT OTHER THAN ALUMINIUM, SILICON AND TIN, AND SUBSEQUENTLY SOLIDIFYING THE MOLTEN TIN AFTER IT HAS DISSOLVED SAID MATERIAL AND PART OF SAID BODY, WHEREBY A LAYER OF SOLID SILICON CONTAINING ALUMINIUM IS DEPOSITED CONTIGUOUS WITH THE REMAINDER OF THE BODY FROM THE MOLDEN TIN.
Claim 2
Independent Claim
99 words
A METHOD OF FORMING AN ELECTRODE IN THE MANUFACTURE OF A SEMICONDUCTOR DEVICE, COMPRISING THE STEPS OF FIRST MELTING TIN IN CONTACT WITH A SOLID BODY OF SILICON AND SIMULTANEOUSLY IN CONTACT WITH A SMALL QUANTITY OF A MATERIAL WHICH CONSISTS AT LEAST PARTLY OF ALUMINIUM AND WHICH CONTAINS NO APPRECIABLE AMOUNT OF ANY ELEMENT OTHER THAN ALUMINIUM, SILICON AND TIN, AND SUBSEQUENTLY SOLIDIFYING THE MOLTEN TIN AFTER IT HAS DISSOLVED SAID MATERIAL AND PART OF SAID BODY, WHEREBY A LAYER OF SOLID SILICON CONTAINING ALUMINIUM IS DEPOSITED CONTIGUOUS WITH THE REMAINDER OF THE BODY FROM THE MOLDEN TIN.
References Cited (Backward Citations)
US2781481A
Cited
US2742383A
Cited
US2776920A
Cited
US2785095A
Cited
US2705768A
Cited
US2736847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |