US3086965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer recovery
Assignee: Phillips Petroleum Co
•
Filing: 1958-01-10
•
Granted: 1963-04-23
•
Expires: 1978-01-10
Abstract
No abstract record available.
Inventors
- 👤 John A Weedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:26
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN A PROCESS FOR IMPROVING THE ODOR OF AN OLEFIN POLYMER CONTAINING A SOLID CHROMIUM OXIDE CATALYST COMPRISING THE INTRODUCTION OF A SOLUTION OF SAID POLYMER TO A CENTRIFUGING ZONE AND REMOVING POLYMER SOLUTION FROM SAID ZONE AS AN EFFLUENT THE IMPROVEMENT WHICH COMPRISES INTRODUCING SAID EFFLUENT INTO A FILTRATION ZONE, REMOVING POLYMER SOLUTION AS FILTRATE FROM SAID ZONE AND RECOVERING FROM SAID FILTRATE A POLYMER PRODUCT CONTAINING NOT MORE THAN ABOUT ONE PART PER MILLION CHROMIUM.
Claim 2
Dependent Claim
77 words
IN A PROCESS FOR IMPROVING THE ODOR OF AN OLEFIN POLYMER CONTAINING A SOLID CHROMIUM OXIDE CATALYST COMPRISING THE INTRODUCTION OF A SOLUTION OF SAID POLYMER TO A CENTRIFUGING ZONE AND REMOVING POLYMER SOLUTION FROM SAID ZONE AS AN EFFLUENT THE IMPROVEMENT WHICH COMPRISES INTRODUCING SAID EFFLUENT INTO A FILTRATION ZONE, REMOVING POLYMER SOLUTION AS FILTRATE FROM SAID ZONE AND RECOVERING FROM SAID FILTRATE A POLYMER PRODUCT CONTAINING NOT MORE THAN ABOUT ONE PART PER MILLION CHROMIUM.
References Cited (Backward Citations)
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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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |