US2455843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for production of gel bodies
Assignee: Davison Chemical Corp
•
Filing: 1944-03-10
•
Granted: 1948-12-07
•
Expires: 1964-03-10
Abstract
No abstract record available.
Inventors
- 👤 Horace M Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:51
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; B; B01; B01J; B01J2/00; B01J2/02; B01J2/06; B01J2/08; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/152; C01B33/154; C01B33/1543
Claims Analysis
Total Claims: 0
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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) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |