US2446049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of isopropenyl toluene and acrylate and processes of producing same
Assignee: Wyeth Holdings LLC
•
Filing: 1943-02-13
•
Granted: 1948-07-27
•
Expires: 1963-02-13
Abstract
No abstract record available.
Inventors
- 👤 Edward L Kropa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:32
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/12; C08F20/00; C08F20/62; C08F220/00; C08F220/02; C08F220/04; C08F220/06; C08F220/10; C08F220/12; C08F220/14; C08F220/42; C08F220/44; Y; Y10; Y10S; Y10S526/00; Y10S526/937
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-27 | 1952-01-26 | 1952-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-27 | 1956-01-26 | 1956-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-27 | 1960-01-26 | 1960-07-27 | $7700.00 | Window Closed / Lapsed |