US2485249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for manufacturing gels
Assignee: Davison Chemical Corp
•
Filing: 1944-02-19
•
Granted: 1949-10-18
•
Expires: 1964-02-19
Abstract
No abstract record available.
Inventors
- 👤 Horace M Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:53
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/152; C01B33/154
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US838658A
Cited
US1088635A
Cited
GB191328789A
Cited
US1393383A
Cited
US1438048A
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US1457977A
Cited
US1612167A
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US1665453A
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US1884618A
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US2063663A
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US2006586A
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US2232727A
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US2303340A
Cited
US2326523A
Cited
US2323583A
Cited
US2284435A
Cited
GB553736A
Cited
US2358202A
Cited
US2370200A
Cited
US2336734A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |