Patent US3243274A successfully refreshed from Google Patents.
US3243274A
Expired / Lapsed
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Method of forming silicon article
Assignee: General Electric Co
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Filing: 1965-03-24
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Granted: 1966-03-29
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Expires: 1985-03-24
Abstract
No abstract record available.
Inventors
- 👤 Carl L Kolbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:20
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/01; B21C23/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD OF FORMING A SILICON ARTICLE WHICH COMPRISES ENCLOSING A SILICON BODY IN A NON-REACTIVE SUPPORTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF GRAPHITE, MOLYBDENUM, TUNGSTEN, COLUMBIUM, TANTALUM, CHROMIUM, RHENIUM, AND ALLOYS OF THESE METALS HAVING A MELTING POINT ABOVE THE WORKING TEMPERATURE OF SAID SILICON BODY TO FORM A BILLET, HEATING SAID BILLET TO A TEMPERATURE IN THE RANGE OF 1100*C. TO 1375*C., DEFORMING SAID BILLET TO A PREDETERMINED SHAPE, AND REMOVING SAID SUPPORTING MATERIAL.
Claim 2
Independent Claim
77 words
A METHOD OF FORMING A SILICON ARTICLE WHICH COMPRISES ENCLOSING A SILICON BODY IN A NON-REACTIVE SUPPORTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF GRAPHITE, MOLYBDENUM, TUNGSTEN, COLUMBIUM, TANTALUM, CHROMIUM, RHENIUM, AND ALLOYS OF THESE METALS HAVING A MELTING POINT ABOVE THE WORKING TEMPERATURE OF SAID SILICON BODY TO FORM A BILLET, HEATING SAID BILLET TO A TEMPERATURE IN THE RANGE OF 1100*C. TO 1375*C., DEFORMING SAID BILLET TO A PREDETERMINED SHAPE, AND REMOVING SAID SUPPORTING MATERIAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |