US3068078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing hyperpure silicon for electronic purposes
Assignee: Siemens Schuckertwerke AG
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Filing: 1959-11-18
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Granted: 1962-12-11
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Expires: 1979-11-18
Abstract
No abstract record available.
Inventors
- 👤 Kersting Arno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:18
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
AN APPARATUS SYSTEM FOR PRODUCING HYPERPURE SILICON FOR ELECTRONIC PURPOSE BY REDUCTION AND PRECIPITATION FROM A GASEOUS SILICON COMPOUND WITH THE AID OF A CARRIER GAS ACTING AS A REDUCING AGENT, COMPRISING AN ENCLOSED EVAPORATOR VESSEL HAVING A LOWER VESSEL PORTION FOR CONTAINING A QUANTITY OF LIQUID SILICON COMPOUND TO
Claim 2
Independent Claim
50 words
AN APPARATUS SYSTEM FOR PRODUCING HYPERPURE SILICON FOR ELECTRONIC PURPOSE BY REDUCTION AND PRECIPITATION FROM A GASEOUS SILICON COMPOUND WITH THE AID OF A CARRIER GAS ACTING AS A REDUCING AGENT, COMPRISING AN ENCLOSED EVAPORATOR VESSEL HAVING A LOWER VESSEL PORTION FOR CONTAINING A QUANTITY OF LIQUID SILICON COMPOUND TO
References Cited (Backward Citations)
US355594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |