US2580901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymer of styrene, glycidyl acrylate, and glycidyl methacrylate
Assignee: Wyeth Holdings LLC
•
Filing: 1948-06-19
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Granted: 1952-01-01
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Expires: 1968-06-19
Abstract
No abstract record available.
Inventors
- 👤 John G Erickson
- 👤 Walter M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:53
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28; C08F4/32; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C08F220/32; C08F220/325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2089569A
Cited
US2129666A
Cited
US2335813A
Cited
GB518057A
Cited
US2462354A
Cited
US2470324A
Cited
US2524432A
Cited
US2476922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |