US2373015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing polymeric materials
Assignee: CLAUDE R WICKARD
•
Filing: 1942-02-24
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Granted: 1945-04-03
•
Expires: 1962-02-24
Abstract
No abstract record available.
Inventors
- 👤 John C Cowan
- 👤 Waldo C Ault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:56
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/91; C08G63/914; C08G63/02; C08G63/12; C08G63/46; C08G63/52; C08G63/916
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) | 1948-04-02 | 1948-10-02 | 1949-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-02 | 1952-10-02 | 1953-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-02 | 1956-10-02 | 1957-04-03 | $7700.00 | Window Closed / Lapsed |