US3372671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing vapor growth of silicon crystals
Assignee: Westinghouse Electric Corp
•
Filing: 1965-05-26
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Granted: 1968-03-12
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Expires: 1985-05-26
Abstract
No abstract record available.
Inventors
- 👤 Chu Ting Li
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:07
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/522; C01; C01B; C01B33/00; C01B33/02; C04B35/56; C04B35/565; C04B35/573; C04B35/622; C04B35/64; C04B35/65; C23; C23C; C23C16/00; C23C16/22; C23C16/44; C23C16/46; C30; C30B; C30B25/00; C30B25/02; H; H10; H10P; H10P14/00; H10P14/20; H10P14/29; H10P14/2901; H10P14/2902; H10P14/2905; H10P14/32; H10P14/3202; H10P14/3204; H10P14/3211; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3411; Y; Y10; Y10S; Y10S148/00; Y10S148/006; Y10S148/007; Y10S148/148
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3146123A
Cited
US3053638A
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US3151009A
Cited
GB970456A
Cited
US3271209A
Cited
US3304908A
Cited
US3293074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |