US3063811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing rodshaped bodies of crystalline silicon for semiconductor devices and semiconductor bodies obtained therefrom
Assignee: Siemens and Halske AG
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Filing: 1958-11-05
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Granted: 1962-11-13
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Expires: 1978-11-05
Abstract
No abstract record available.
Inventors
- 👤 Kniepkamp Heinrich
- 👤 Rosenberger Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:14
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/02; C30B29/06; C01; C01B; C01B33/00; C01B33/02; C01B33/021; C01B33/027; C01B33/035; C01B33/08; C22; C22B; C22B41/00; C23; C23C; C23C16/00; C23C16/06; C23C16/22; C23C16/44; C23C16/46; C30B13/00; C30B25/00; C30B25/02; C30B30/00; C30B30/02; C30B9/00; C30B9/14; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/27; H; H10; H10D; H10D99/00; H10P; H10P10/00; H10P10/12; H10P14/00; H10P14/20; H10P14/24; H10P14/29; H10P14/2901; H10P14/2902; H10P14/2905; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3411; H10P95/00; Y; Y10; Y10S; Y10S117/00; Y10S117/917; Y10T; Y10T117/00; Y10T117/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
A METHOD OF PRODUCING COMPACT CRYSTALLINE SILICON RODS, COMPRISING MIXING A PRE-PURIFIED SILICON HALOGEN COMPOUND IN LIQUID CONDITION THEREOF WITH A NITROGENCONTAINING CHEMICAL COMPOUND, SELECTED FROM A GROUP COMPRISING P-OXYAZOBENZOL, PROPIONITRIL AND BENZOL-AAZONAPTHOL, WHICH WILL PRECIPITATE ANY BORON HALIDES PRESENT IN THE FORM OF DIFFICULTY VOLATILIZABLE COMPOUNDS
References Cited (Backward Citations)
US2692839A
Cited
US2880117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |