US2828347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic polymerization of olefins
Assignee: Phillips Petroleum Co
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Filing: 1953-04-27
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Granted: 1958-03-25
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Expires: 1973-04-27
Abstract
No abstract record available.
Inventors
- 👤 Hogan John Paul
- 👤 William C Lanning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:12
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/20; C07C2/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PROCESS FOR POLYMERIZING OLEFINS WHICH COMPRISES CONTACTING A POLYMERIZABLE OLEFIN FEED UNDER POLYMERIZING CONDITIONS WITH A CATALYST CONSISTING ESSENTIALLY OF NICKEL HALIDE-SILICA-ALUMINA, WHEREIN SAID NICKEL HALIDE IS SELECTED FROM THE GROUP CONSISTING PF NICKEL CHLORIDE AND NICKEL BROMIDE, SO AS TO POLYMERIZE SAID OLEFIN.
Claim 2
Dependent Claim
45 words
A PROCESS FOR POLYMERIZING OLEFINS WHICH COMPRISES CONTACTING A POLYMERIZABLE OLEFIN FEED UNDER POLYMERIZING CONDITIONS WITH A CATALYST CONSISTING ESSENTIALLY OF NICKEL HALIDE-SILICA-ALUMINA, WHEREIN SAID NICKEL HALIDE IS SELECTED FROM THE GROUP CONSISTING PF NICKEL CHLORIDE AND NICKEL BROMIDE, SO AS TO POLYMERIZE SAID OLEFIN.
References Cited (Backward Citations)
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Cited
US2286129A
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US2436151A
Cited
US2581228A
Cited
US2645620A
Cited
US2678904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |