US2301204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for polymerization processes
Assignee: EIDP Inc
•
Filing: 1939-07-28
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Granted: 1942-11-10
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Expires: 1959-07-28
Abstract
No abstract record available.
Inventors
- 👤 Charles M Fields
- 👤 Reuben T Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:39
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01F; B01F31/00; B01F31/40; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00168; Y; Y10; Y10S; Y10S526/00; Y10S526/92
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) | 1945-11-09 | 1946-05-11 | 1946-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-09 | 1950-05-11 | 1950-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-09 | 1954-05-11 | 1954-11-10 | $7700.00 | Window Closed / Lapsed |