US2626293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slurry polymerization process
Assignee: Standard Oil Development Co
•
Filing: 1951-03-29
•
Granted: 1953-01-20
•
Expires: 1971-03-29
Abstract
No abstract record available.
Inventors
- 👤 Sumner B Sweetser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:33
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/18; C07C2521/00; C07C2521/06; C07C2521/08; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
IN THE NON-REGENERATIVE CATALYST PROCESS OF POLYMERIZING OLEFINS IN WHICH AN OLEFIN FEED IS CONTINUOUSLY INTRODUCED INTO A REACTION ZONE
Claim 2
Dependent Claim
20 words
IN THE NON-REGENERATIVE CATALYST PROCESS OF POLYMERIZING OLEFINS IN WHICH AN OLEFIN FEED IS CONTINUOUSLY INTRODUCED INTO A REACTION ZONE
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) | 1956-01-20 | 1956-07-21 | 1957-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-20 | 1960-07-21 | 1961-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-20 | 1964-07-21 | 1965-01-20 | $7700.00 | Window Closed / Lapsed |