Patent US2187217A successfully refreshed from Google Patents.
US3459152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for epitaxially producing a layer on a substrate
Assignee: Westinghouse Electric Corp
•
Filing: 1964-08-28
•
Granted: 1969-08-05
•
Expires: 1984-08-28
Abstract
No abstract record available.
Inventors
- 👤 Liburn H Garrison
- 👤 William E Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:47
CPC Classifications
C; C30; C30B; C30B25/00; C30B25/02; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1004; Y10T117/1008
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1601931A
Cited
US2854318A
Cited
US3146123A
Cited
US3011877A
Cited
US3117859A
Cited
US3030189A
Cited
US3058812A
Cited
US3157541A
Cited
US3147141A
Cited
US3145447A
Cited
US3151006A
Cited
US3042493A
Cited
US3161474A
Cited
US3172791A
Cited
US3271209A
Cited
US3152022A
Cited
US3226270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |