Patent US1943532A successfully refreshed from Google Patents.
US1943532A
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Synthetic inorganic gel and process for making same
Assignee: LOS ANGELES TESTING LAB
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Filing: 1929-07-27
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Granted: 1934-01-16
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Expires: 1949-07-27
Abstract
No abstract record available.
Inventors
- 👤 Charles S Howe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:12
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/0052; B01J13/0056; C; C04; C04B; C04B7/00; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/145
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) | 1937-01-15 | 1937-07-17 | 1938-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-01-15 | 1941-07-17 | 1942-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-01-15 | 1945-07-17 | 1946-01-16 | $7700.00 | Window Closed / Lapsed |