US3046269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic process for polymerizing ethylenically unsaturated hydrocarbons
Assignee: Millennium Petrochemicals Inc
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Filing: 1959-09-22
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Granted: 1962-07-24
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Expires: 1979-09-22
Abstract
No abstract record available.
Inventors
- 👤 Howard J Cohen
- 👤 John M Hoyt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:35
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A POLYMERIZATION PROCESS WHICH COMPRISES CONTACTING LOWER MOLECULAR WEIGHT ETHYLENICALLY UNSATURATED OLEFIN HYDROCARBON WITH A COMBINATION CATALYST COMPRISING (A) A REDUCING AGENT FROM THE GROUP CONSISTING OF ALKYLALUMINUM HALIDES AND TRIALKYLALUMINUM AND (B) A MIXTURE OF A COMPOUND OF THE FOLLOWING FORMULA
Claim 2
Dependent Claim
42 words
A POLYMERIZATION PROCESS WHICH COMPRISES CONTACTING LOWER MOLECULAR WEIGHT ETHYLENICALLY UNSATURATED OLEFIN HYDROCARBON WITH A COMBINATION CATALYST COMPRISING (A) A REDUCING AGENT FROM THE GROUP CONSISTING OF ALKYLALUMINUM HALIDES AND TRIALKYLALUMINUM AND (B) A MIXTURE OF A COMPOUND OF THE FOLLOWING FORMULA
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) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |