US2762791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene polymerization
Assignee: EIDP Inc
•
Filing: 1953-09-24
•
Granted: 1956-09-11
•
Expires: 1973-09-24
Abstract
No abstract record available.
Inventors
- 👤 Donald C Pease
- 👤 Milton J Roedel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:44
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
IN THE POLYMERIZATION OF ETHYLENE TO SOLID HOMOPOLYMERS IN THE PRESENCE OF A CATALYST EFFECTIVE THEREFOR,
Claim 2
Dependent Claim
16 words
IN THE POLYMERIZATION OF ETHYLENE TO SOLID HOMOPOLYMERS IN THE PRESENCE OF A CATALYST EFFECTIVE THEREFOR,
References Cited (Backward Citations)
US1721034A
Cited
US2606179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |