US1553394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped oxides and method of producing the same
Assignee: Westinghouse Electric Corp
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Filing: 1920-12-16
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Granted: 1925-09-15
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Expires: 1940-12-16
Abstract
No abstract record available.
Inventors
- 👤 Norman B Pilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:07
CPC Classifications
C; C22; C22B; C22B4/00; H; H01; H01J; H01J19/00; H01J19/02; H01J19/04; H01J19/06; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958
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) | 1928-09-14 | 1929-03-16 | 1929-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-09-14 | 1933-03-16 | 1933-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-09-14 | 1937-03-16 | 1937-09-15 | $7700.00 | Window Closed / Lapsed |