US2964506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removal of solid catalyst from a slurry of polymer and catalyst
Assignee: Phillips Petroleum Co
•
Filing: 1956-02-23
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Granted: 1960-12-13
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Expires: 1976-02-23
Abstract
No abstract record available.
Inventors
- 👤 John E Wicklatz
- 👤 Kenneth R Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:16
CPC Classifications
C; C08; C08C; C08C2/00; C08C2/02; C08C2/04; Y; Y10; Y10S; Y10S159/00; Y10S159/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A PROCESS FOR SEPARATING PARTIALLY SPENT NICKELKIESELGUHR CATALYST FOR A REACTOR EFFLUENT COMPRISING A SLURRY OF SAID CATALYST IN A SOLUTION OF HYDROGENATED POLYBUTADIENE IN METHYLCYCLOHEXANE WHICH COMPRISES ADDING ADDITIONAL NICKEL-KIESELGUHR CATALYST TO SAID REACTOR EFFLUENT, AND EFFECTING A GRAVITATIONAL SEPARATION OF THE CATALYST FROM THE OTHER COMPONENTS OF THE SLURRY.
Claim 2
Dependent Claim
51 words
A PROCESS FOR SEPARATING PARTIALLY SPENT NICKELKIESELGUHR CATALYST FOR A REACTOR EFFLUENT COMPRISING A SLURRY OF SAID CATALYST IN A SOLUTION OF HYDROGENATED POLYBUTADIENE IN METHYLCYCLOHEXANE WHICH COMPRISES ADDING ADDITIONAL NICKEL-KIESELGUHR CATALYST TO SAID REACTOR EFFLUENT, AND EFFECTING A GRAVITATIONAL SEPARATION OF THE CATALYST FROM THE OTHER COMPONENTS OF THE SLURRY.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |