US3055741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing silicon
Assignee: GTE Sylvania Inc
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Filing: 1960-12-22
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Granted: 1962-09-25
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Expires: 1980-12-22
Abstract
No abstract record available.
Inventors
- 👤 Macinnis Martin Benedict
- 👤 Tulk Alexander Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:54
CPC Classifications
C; C30; C30B; C30B11/00; C30B11/04; C30B11/08; C30B11/12; C01; C01B; C01B33/00; C01B33/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
THE METHOD OF PRODUCING ELEMENTAL SILICON WHICH COMPRISES HEATING A PORTION OF A BODY OF SILICON AT LEAST TO THE MELTING POINT OF SILICON, PASSING A VAPOR OF A HALOGENATED SILANE IN CONTACT WITH A SURFACE OF SAID PORTION TO CAUSE DEPOSITION OF SILICON ON SAID SURFACE AND CONCURRENTLY MAINTAINING A NON-REACTIVE GASEOUS ATMOSPHERE IN CONTACT WITH THE SURFACES OF SAID BODY OF SILICON
Claim 2
Independent Claim
64 words
THE METHOD OF PRODUCING ELEMENTAL SILICON WHICH COMPRISES HEATING A PORTION OF A BODY OF SILICON AT LEAST TO THE MELTING POINT OF SILICON, PASSING A VAPOR OF A HALOGENATED SILANE IN CONTACT WITH A SURFACE OF SAID PORTION TO CAUSE DEPOSITION OF SILICON ON SAID SURFACE AND CONCURRENTLY MAINTAINING A NON-REACTIVE GASEOUS ATMOSPHERE IN CONTACT WITH THE SURFACES OF SAID BODY OF SILICON
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) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |