US3250757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling feed to a polymerization reaction
Assignee: Phillips Petroleum Co
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Filing: 1961-05-18
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Granted: 1966-05-10
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Expires: 1981-05-18
Abstract
No abstract record available.
Inventors
- 👤 Dexter E Smith
- 👤 Jr Henry R Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:43
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN A POLYMERIZATION PROCESS WHEREIN A RETURN STREAM IS DIVIDED INTO A PURGE STREAM AND A RECYCLE STREAM WHEREBY INCREASE OF THE FLOW OF THE RECYCLE STREAM WILL CAUSE DECREASE OF THE FLOW OF THE PURGE STREAM, AND DECREASE OF THE FLOW OF THE RECYCLE STREAM WILL CAUSE INCREASE OF THE FLOW OF THE PURGE STREAM, SAID RECYCLE STREAM OF MONOMER AND DILUENT, A MONOMER MAKE-UP STREAM AND A DILUENT MAKE-UP STREAM ARE COMBINED TO PRODUCE A FEED STREAM WHICH IS PASSED TO A REACTION ZONE, THE FEED CONTROL METHOF WHICH COMPRISES ANALYZING SAID FEED STREAM FOR MONO-
Claim 2
Dependent Claim
98 words
IN A POLYMERIZATION PROCESS WHEREIN A RETURN STREAM IS DIVIDED INTO A PURGE STREAM AND A RECYCLE STREAM WHEREBY INCREASE OF THE FLOW OF THE RECYCLE STREAM WILL CAUSE DECREASE OF THE FLOW OF THE PURGE STREAM, AND DECREASE OF THE FLOW OF THE RECYCLE STREAM WILL CAUSE INCREASE OF THE FLOW OF THE PURGE STREAM, SAID RECYCLE STREAM OF MONOMER AND DILUENT, A MONOMER MAKE-UP STREAM AND A DILUENT MAKE-UP STREAM ARE COMBINED TO PRODUCE A FEED STREAM WHICH IS PASSED TO A REACTION ZONE, THE FEED CONTROL METHOF WHICH COMPRISES ANALYZING SAID FEED STREAM FOR MONO-
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |