US2949447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing of polymer made in slurry process
Assignee: —
•
Filing: —
•
Granted: 1960-08-16
•
Expires: 1977-08-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:16
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/20; B01J8/22; B01J8/222; B01J8/005; B01J2219/00; B01J2219/00002; B01J2219/00004; B01J2219/00006; Y; Y10; Y10S; Y10S159/00; Y10S159/03; Y10S159/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A METHOD FOR RECOVERIN DRY POLYMER OF A 1-OLEFIN OF 2 TO 8 CARBON ATOMS FROM A SLURRY OF POLYMER IN A HYDROCARBON DILUENT WHICH COMPRISES FLASHING DILUENT FROM POLYMER AT AN UPPER LEVEL IN A FLASH ZONE, GRAVITATING POLYMER TO A FLUIDIZED BED OF SUCH POLYMER AT A
Claim 2
Independent Claim
49 words
A METHOD FOR RECOVERIN DRY POLYMER OF A 1-OLEFIN OF 2 TO 8 CARBON ATOMS FROM A SLURRY OF POLYMER IN A HYDROCARBON DILUENT WHICH COMPRISES FLASHING DILUENT FROM POLYMER AT AN UPPER LEVEL IN A FLASH ZONE, GRAVITATING POLYMER TO A FLUIDIZED BED OF SUCH POLYMER AT A
References Cited (Backward Citations)
US2187877A
Cited
US2431455A
Cited
US2565960A
Cited
US2537130A
Cited
US2626856A
Cited
US2635684A
Cited
US2756188A
Cited
US2780587A
Cited
US2858902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |