US2886616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of polymerization processes
Assignee: Phillips Petroleum Co
•
Filing: 1955-08-24
•
Granted: 1959-05-12
•
Expires: 1975-08-24
Abstract
No abstract record available.
Inventors
- 👤 Clyde W Mertz
- 👤 Paul F Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:18
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
IN A PROCESS FOR THE POLYMERIZATION OF A POLYMERIZABLE ORGANIC COMPOUND IN THE PRESENCE OF A POLYMERIZATION CATALYST WHEREIN SAID POLYMERIZATION IS CARRIED OUT AT A SUBSTANTIALLY CONSTANT POLYMERIZATION TEMPERATURE IN A CLOSED POLYMERIZATION ZONE HAVING A VAPOR PHASE COMPRISING SAID ORGANIC COMPOUND AND A LIQUID PHASE COMPRISING SAID ORGANIC COMPOUND, SAID POLYMERIZATION CATALYST AND AN INERT DILUENT, THE IMPROVEMENT WHICH COMPRISES INTRODUCING SAID ORGANIC COMPOUND INTO SAID POLYMERIZATION ZONE SO AS TO MAINTAIN A FIXED VALUE OF PRESSSURE THEREIN, MEASURING THE RATE AT WHICH POLYMERIC MATERIAL IS WITHDRAWN FROM SAID POLYMERIZATION ZONE; CHANGING SAID FIXED VALUE OF PRESSURE IN ACCORDANCE WITH THE MEASURED RATE OF WITHDRAWAL OF POLYMERIC MATERIAL; AND REGULATING THE SUPPLY OF ORGANIC MATERIAL TO SAID POLYMERIZATION ZONE SO AS TO MAINTAIN THE PRESSURE THEREIN AT ITS CHANGED VALUE.
Claim 2
Dependent Claim
132 words
IN A PROCESS FOR THE POLYMERIZATION OF A POLYMERIZABLE ORGANIC COMPOUND IN THE PRESENCE OF A POLYMERIZATION CATALYST WHEREIN SAID POLYMERIZATION IS CARRIED OUT AT A SUBSTANTIALLY CONSTANT POLYMERIZATION TEMPERATURE IN A CLOSED POLYMERIZATION ZONE HAVING A VAPOR PHASE COMPRISING SAID ORGANIC COMPOUND AND A LIQUID PHASE COMPRISING SAID ORGANIC COMPOUND, SAID POLYMERIZATION CATALYST AND AN INERT DILUENT, THE IMPROVEMENT WHICH COMPRISES INTRODUCING SAID ORGANIC COMPOUND INTO SAID POLYMERIZATION ZONE SO AS TO MAINTAIN A FIXED VALUE OF PRESSSURE THEREIN, MEASURING THE RATE AT WHICH POLYMERIC MATERIAL IS WITHDRAWN FROM SAID POLYMERIZATION ZONE; CHANGING SAID FIXED VALUE OF PRESSURE IN ACCORDANCE WITH THE MEASURED RATE OF WITHDRAWAL OF POLYMERIC MATERIAL; AND REGULATING THE SUPPLY OF ORGANIC MATERIAL TO SAID POLYMERIZATION ZONE SO AS TO MAINTAIN THE PRESSURE THEREIN AT ITS CHANGED VALUE.
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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) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |