Patent US3203943A successfully refreshed from Google Patents.
US3203943A
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Treatment of olefin polymers
Assignee: Phillips Petroleum Co
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Filing: 1962-12-26
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Granted: 1965-08-31
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Expires: 1982-12-26
Abstract
No abstract record available.
Inventors
- 👤 Clarence G Houser
- 👤 Raymond G Rohlfing
- 👤 William E Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:25
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/02; C08F10/00; Y; Y10; Y10S; Y10S159/00; Y10S159/03; Y10S159/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
IN A MASS POLYMERIZATION PROCESS WHEREIN A LIQUID MONO-1-OLEFIN IS CONTACTED IN A POLYMERIZATION ZONE WITH A CATALYST CAPABLE OF POLYMERIZING SAID OLEFIN UNDER POLYMERIZATION CONDITIONS SO AS TO FORM A SOLID POLYMER, SAID SOLID POLYMER IS CONTACTED WITH A DIKETONE SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FOLLOWING FORMULAS:
Claim 2
Dependent Claim
52 words
IN A MASS POLYMERIZATION PROCESS WHEREIN A LIQUID MONO-1-OLEFIN IS CONTACTED IN A POLYMERIZATION ZONE WITH A CATALYST CAPABLE OF POLYMERIZING SAID OLEFIN UNDER POLYMERIZATION CONDITIONS SO AS TO FORM A SOLID POLYMER, SAID SOLID POLYMER IS CONTACTED WITH A DIKETONE SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FOLLOWING FORMULAS:
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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |