US2893984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of alpha olefins
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1956-04-02
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Granted: 1959-07-07
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Expires: 1976-04-02
Abstract
No abstract record available.
Inventors
- 👤 Charles W Seelbach
- 👤 Mcculloch William John Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:41
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE PROCESS FOR POLYMERIZING ALPHA OLEFINS HAVING THE GENERAL FORMULA R-CH=CH2, IN WHICH R IS A HYDROCARBON GROUP, IN THE PRESENCE OF A CATALYST CONSISTING ESSENTIALLY OF (A) A PARTIALLY REDUCED TITANIUM HALIDE (B) 0.1 TO 1.0 MOLS OF UNREACTED TITANIUM METAL PER 4 MOLS OF TITANIUM HALIDE, AND (C) ALUMINUM ALKYLCOMPOUND IN AMOUNT SUFFICIENT TO GIVE AN A1/TI MOLAR RATIO OF 0.1 TO 20.0.
Claim 2
Dependent Claim
65 words
THE PROCESS FOR POLYMERIZING ALPHA OLEFINS HAVING THE GENERAL FORMULA R-CH=CH2, IN WHICH R IS A HYDROCARBON GROUP, IN THE PRESENCE OF A CATALYST CONSISTING ESSENTIALLY OF (A) A PARTIALLY REDUCED TITANIUM HALIDE (B) 0.1 TO 1.0 MOLS OF UNREACTED TITANIUM METAL PER 4 MOLS OF TITANIUM HALIDE, AND (C) ALUMINUM ALKYLCOMPOUND IN AMOUNT SUFFICIENT TO GIVE AN A1/TI MOLAR RATIO OF 0.1 TO 20.0.
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) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |