Patent US2899416A successfully refreshed from Google Patents.
US2899416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst compositions comprising a
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
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Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:56
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A MEDIUM IN WHICH TO CARRY OUT POLYMERIZATIONS, CONSISTING ESSENTIALLY OF AN INERT LIQUID HYDROCARBON, TITANIUM DICHLORIDE AND A MEMBER OF THE CLASS CONSISTING OF TITANIUM METAL AND ALUMINUM TRICHLORIDE, SAID MEMBER BEING SYNERGISTIC WITH SAID TITAIUM DICHLORIDE AND PRESENT IN QUANTITY NOT IN EXCESS OF TWICE THE QUANTITY OF TITANIUM DICHLORIDE WHEN SAID MEMBER IS TITANIUM METAL, NOR IN EXCESS OF 2.65 TIMES THE QUANTITY OF TITANIUM DICHLORIDE WHEN THE SAID MEMBER IS ALUMINUM TRICHLORIDE.
Claim 2
Independent Claim
76 words
A MEDIUM IN WHICH TO CARRY OUT POLYMERIZATIONS, CONSISTING ESSENTIALLY OF AN INERT LIQUID HYDROCARBON, TITANIUM DICHLORIDE AND A MEMBER OF THE CLASS CONSISTING OF TITANIUM METAL AND ALUMINUM TRICHLORIDE, SAID MEMBER BEING SYNERGISTIC WITH SAID TITAIUM DICHLORIDE AND PRESENT IN QUANTITY NOT IN EXCESS OF TWICE THE QUANTITY OF TITANIUM DICHLORIDE WHEN SAID MEMBER IS TITANIUM METAL, NOR IN EXCESS OF 2.65 TIMES THE QUANTITY OF TITANIUM DICHLORIDE WHEN THE SAID MEMBER IS ALUMINUM TRICHLORIDE.
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) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |