US3241913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for activating titanium subhalide as a catalyst by grinding same
Assignee: Union Carbide Corp
•
Filing: 1963-04-22
•
Granted: 1966-03-22
•
Expires: 1983-04-22
Abstract
No abstract record available.
Inventors
- 👤 Robert M Fowler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:58
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/906; Y10S526/908
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
29 words
A PROCESS FOR ACTIVATING TITANIUM TRICHLORIDE FOR USE AS A CATALYST MATERIAL IN POLYMERIZATION WHICH COMPRISES COMMINUTING THE TITANIUM TRICHLORIDE BY GRINDING AT AN AMBIENT TEMPERATURE OF ABOUT -10*C.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |