US2883372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of ethylene and dihydrodicyclopentadiene
Assignee: EIDP Inc
•
Filing: 1957-03-14
•
Granted: 1959-04-21
•
Expires: 1977-03-14
Abstract
No abstract record available.
Inventors
- 👤 Stamatoff Gelu Stoeff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:34
CPC Classifications
C; C08; C08F; C08F210/00; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/947
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A NORMALLY SOLID COPOLYMER OF 2,3-DIHYDRODICYCLOPENTADIENE AND ETHYLENE, SAID COPOLYMER HAVING A DENSITY IN THE RANGE OF 0.96 TO 1.02 AND CAPABLE OF BEING COMPRESSION MOLDED AT ELEVATED TEMPERATURES INTO TOUGH FILMS.
Claim 2
Dependent Claim
32 words
A NORMALLY SOLID COPOLYMER OF 2,3-DIHYDRODICYCLOPENTADIENE AND ETHYLENE, SAID COPOLYMER HAVING A DENSITY IN THE RANGE OF 0.96 TO 1.02 AND CAPABLE OF BEING COMPRESSION MOLDED AT ELEVATED TEMPERATURES INTO TOUGH FILMS.
References Cited (Backward Citations)
US2699457A
Cited
US2773051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |