US2448799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene polymer compositions
Assignee: EIDP Inc
•
Filing: 1945-11-03
•
Granted: 1948-09-07
•
Expires: 1965-11-03
Abstract
No abstract record available.
Inventors
- 👤 Jr William B Happoldt
- 👤 Stockfleth Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L91/00; C08L91/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2298846A
Cited
US2406039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |