US2496868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of 3-vinylpyrene
Assignee: General Electric Co
•
Filing: 1948-05-13
•
Granted: 1950-02-07
•
Expires: 1968-05-13
Abstract
No abstract record available.
Inventors
- 👤 Ralph G Flowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:51
CPC Classifications
C; C08; C08F; C08F12/00; C08F12/02; C08F12/32; C08F212/00; C08F212/02; C08F212/32; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F222/00; C08F222/04; C08F222/06; C08F222/08; C08F212/34; C08F218/00; C08F218/02; C08F218/04; C08F218/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
A 3-VINYLPYRENE POLYMER.
Claim 2
Dependent Claim
3 words
A 3-VINYLPYRENE POLYMER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |