Patent US2367946A successfully refreshed from Google Patents.
US2367946A
Expired / Lapsed
US
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Process of producing metallic disulphides, tellurides, and selenides
Assignee: Westinghouse Electric Corp
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Filing: 1942-12-15
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Granted: 1945-01-23
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Expires: 1962-12-15
Abstract
No abstract record available.
Inventors
- 👤 Edwin B Kaercher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:47
CPC Classifications
C; C01; C01G; C01G39/00; C01B; C01B19/00; C01B19/007; C01G1/00; C01G1/12; C01G39/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-01-23 | 1948-07-24 | 1949-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-01-23 | 1952-07-24 | 1953-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-01-23 | 1956-07-24 | 1957-01-23 | $7700.00 | Window Closed / Lapsed |