US2964511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of catalytic processes
Assignee: Phillips Petroleum Co
•
Filing: 1956-03-12
•
Granted: 1960-12-13
•
Expires: 1976-03-12
Abstract
No abstract record available.
Inventors
- 👤 John E Cottle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:38
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0005; B01J19/00; B01J19/0006; B01J8/001; C; C08; C08F; C08F2/00; C08F110/00; C08F110/02; C08F2400/00; C08F2400/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
IN A LIQUID PHASE CATALYTIC POLYMERIZATION REACTION IN A PRESSURIZED REACTION ZONE CARRYING A LIQUID PHASE AND A VAPOR PHASE AND TO WHICH POLYMERIZATION CATALYST AND MONOMER ARE FED CONTINUOUSLY IN SEPARATE STREAMS, THE IMPROVEMENT IN CONTROLLING SAID REACTION WHICH COMPRISES SENSING THE PRESSURE IN SAID REACTION ZONE, PRODUCING A CONTROL SIGNAL AS A FUNCTION OF SAID PRESSURE, AND APPLYING SAID CONTROL SIGNAL TO INCREASE THE RATE AT WHICH CATALYST IS FED TO SAID REACTION ZONE IN RESPONSE TO AN INCREASE IN SAID PRESSURE AND TO DECREASE THE RATE AT WHICH SAID CATALYST IS FED TO SAID REACTION ZONE IN RESPONSE TO A DECREASE IN SAID PRESSURE, THEREBY MAINTAINING SAID PRESSURE WITHIN PREDETERMINED LIMITS.
Claim 2
Dependent Claim
114 words
IN A LIQUID PHASE CATALYTIC POLYMERIZATION REACTION IN A PRESSURIZED REACTION ZONE CARRYING A LIQUID PHASE AND A VAPOR PHASE AND TO WHICH POLYMERIZATION CATALYST AND MONOMER ARE FED CONTINUOUSLY IN SEPARATE STREAMS, THE IMPROVEMENT IN CONTROLLING SAID REACTION WHICH COMPRISES SENSING THE PRESSURE IN SAID REACTION ZONE, PRODUCING A CONTROL SIGNAL AS A FUNCTION OF SAID PRESSURE, AND APPLYING SAID CONTROL SIGNAL TO INCREASE THE RATE AT WHICH CATALYST IS FED TO SAID REACTION ZONE IN RESPONSE TO AN INCREASE IN SAID PRESSURE AND TO DECREASE THE RATE AT WHICH SAID CATALYST IS FED TO SAID REACTION ZONE IN RESPONSE TO A DECREASE IN SAID PRESSURE, THEREBY MAINTAINING SAID PRESSURE WITHIN PREDETERMINED LIMITS.
Claim 3
Dependent Claim
204 words
IN A LIQUID PHASE CATALYTIC POLYMERIZATION REACTION IN A PRESSURIZED REACTION ZONE CARRYING A LIQUID PHASE AND A VAPOR PHASE AND TO WHICH POLYMERIZATION CATALYST AND MONOMER ARE FED CONTINUOUSLY IN SEPARATE STREAMS, THE IMPROVEMENT IN CONTROLLING SAID REACTION WHICH COMPRISES SENSING THE PRESSURE IN SAID REACTION ZONE, PRODUCING A FIRST CONTROL SIGNAL AS A FUNCTION OF SAID PRESSURE, APPLYING SAID FIRST CONTROL SIGNAL TO INCREASE THE RATE AT WHICH MONOMER IS FED TO SAID REACTION ZONE IN RESPONSE TO A DECREASE IN SAID PRESSURE AND TO DECREASE THE RATE AT WHICH SAID MONOMER IS FED TO SAID REACTION ZONE IN RESPONSE TO AN INCREASE IN SAID PRESSURE THEREBY MAINTAINING SAID PRESSURE WITHIN PREDETERMINED LIMITS, SENSING THE RATE OF FLOW OF SAID MONOMER TO SAID REACTION ZONE, PRODUCING A SECOND CONTROL SIGNAL AS A FUNCTION OF SAID RATE OF FLOW, AND APPLYING SAID SECOND CONTROL SIGNAL TO INCREASE THE RATE AT WHICH CATALYST IS FED TO SAID REACTION ZONE IN RESPONSE TO A DECREASE IN SAID MONOMER FLOW RATE AND TO DECREASE THE RATE AT WHICH SAID CATALYST IS FED TO SAID REACTION ZONE IN RESPONSE TO AN INCREASE IN SAID MONOMER FLOW RATE THEREBY MAINTAINING SAID MONOMER RATE OF FLOW WITHIN PREDETERMINED LIMITS.
Claim 4
Dependent Claim
204 words
IN A LIQUID PHASE CATALYTIC POLYMERIZATION REACTION IN A PRESSURIZED REACTION ZONE CARRYING A LIQUID PHASE AND A VAPOR PHASE AND TO WHICH POLYMERIZATION CATALYST AND MONOMER ARE FED CONTINUOUSLY IN SEPARATE STREAMS, THE IMPROVEMENT IN CONTROLLING SAID REACTION WHICH COMPRISES SENSING THE PRESSURE IN SAID REACTION ZONE, PRODUCING A FIRST CONTROL SIGNAL AS A FUNCTION OF SAID PRESSURE, APPLYING SAID FIRST CONTROL SIGNAL TO INCREASE THE RATE AT WHICH MONOMER IS FED TO SAID REACTION ZONE IN RESPONSE TO A DECREASE IN SAID PRESSURE AND TO DECREASE THE RATE AT WHICH SAID MONOMER IS FED TO SAID REACTION ZONE IN RESPONSE TO AN INCREASE IN SAID PRESSURE THEREBY MAINTAINING SAID PRESSURE WITHIN PREDETERMINED LIMITS, SENSING THE RATE OF FLOW OF SAID MONOMER TO SAID REACTION ZONE, PRODUCING A SECOND CONTROL SIGNAL AS A FUNCTION OF SAID RATE OF FLOW, AND APPLYING SAID SECOND CONTROL SIGNAL TO INCREASE THE RATE AT WHICH CATALYST IS FED TO SAID REACTION ZONE IN RESPONSE TO A DECREASE IN SAID MONOMER FLOW RATE AND TO DECREASE THE RATE AT WHICH SAID CATALYST IS FED TO SAID REACTION ZONE IN RESPONSE TO AN INCREASE IN SAID MONOMER FLOW RATE THEREBY MAINTAINING SAID MONOMER RATE OF FLOW WITHIN PREDETERMINED LIMITS.
References Cited (Backward Citations)
US1309794A
Cited
US1624294A
Cited
US2121258A
Cited
US2224071A
Cited
US2500197A
Cited
US2440822A
Cited
US2404788A
Cited
US2546013A
Cited
US2570056A
Cited
US2431485A
Cited
US2550126A
Cited
US2497828A
Cited
US2497323A
Cited
US2665197A
Cited
US2709678A
Cited
US2777836A
Cited
US2825721A
Cited
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 |