US2449528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of monovinylphenoxthines and method of preparing the same
Assignee: General Electric Co
•
Filing: 1947-05-29
•
Granted: 1948-09-14
•
Expires: 1967-05-29
Abstract
No abstract record available.
Inventors
- 👤 Ralph G Flowers
- 👤 Leola W Flowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:01
CPC Classifications
C; C08; C08F; C08F28/00; C08F28/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2125649A
Cited
US2324896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-14 | 1952-03-15 | 1952-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-14 | 1956-03-15 | 1956-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-14 | 1960-03-15 | 1960-09-14 | $7700.00 | Window Closed / Lapsed |