Patent US2917465A successfully refreshed from Google Patents.
US2917465A
Expired / Lapsed
US
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Polymerization catalyst feed control
Assignee: Phillips Petroleum Co
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Filing: 1956-04-27
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Granted: 1959-12-15
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Expires: 1976-04-27
Abstract
No abstract record available.
Inventors
- 👤 John W Begley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:50
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/002; B01F; B01F35/00; B01F35/80; B01F35/83; B01F35/82; B01J35/00; B01J35/20; B01J35/27; C; C08; C08F; C08F10/00; B01F23/00; B01F23/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
3. IN A PROCESS WHEREIN A CATALYST SELECTED FROM THE GROUP CONSISTING OF INORGANIC OXIDES AND METALS IS PREPARED AND UTILIZED IN THE FORM OF A LSURRY THEREOF IN A SATURATED HYDROCARBON DILUENT, THE IMPROVEMENT WHICH COMPRISES PREPARING A CONCENTRATED SUSPENSION OF SAID CATALYST IN SAID DILUENT, FEEDING SAID SUSPENSION INTO A SEPARATE STREAM OF SAID DILUTENT, MEASURING THE ELECTRICAL CAPACITANCE OF THE RESULTING SILUTED SLURRY, AND CONTRILLING THE RATE OF FEED OF SAID SUSPENSION INTO SAID STREAM OF SAID DILUTENT IN RESPONSE TO THE ELECTRICAL CAPACITANCE OF SAID DILUTED SLURRY AND THEREBY CONTROLLING THE CONCENTRATION OF SAID SLURRY TO OBTAIN A PREDETERMINED ELECTRICAL CAPACITIANCE THEREOF AND CONSEQUENTLY A PREDETERMINED SIRED CONCENTRATION OF CATALYST THEREIN.
Claim 2
Dependent Claim
115 words
3. IN A PROCESS WHEREIN A CATALYST SELECTED FROM THE GROUP CONSISTING OF INORGANIC OXIDES AND METALS IS PREPARED AND UTILIZED IN THE FORM OF A LSURRY THEREOF IN A SATURATED HYDROCARBON DILUENT, THE IMPROVEMENT WHICH COMPRISES PREPARING A CONCENTRATED SUSPENSION OF SAID CATALYST IN SAID DILUENT, FEEDING SAID SUSPENSION INTO A SEPARATE STREAM OF SAID DILUTENT, MEASURING THE ELECTRICAL CAPACITANCE OF THE RESULTING SILUTED SLURRY, AND CONTRILLING THE RATE OF FEED OF SAID SUSPENSION INTO SAID STREAM OF SAID DILUTENT IN RESPONSE TO THE ELECTRICAL CAPACITANCE OF SAID DILUTED SLURRY AND THEREBY CONTROLLING THE CONCENTRATION OF SAID SLURRY TO OBTAIN A PREDETERMINED ELECTRICAL CAPACITIANCE THEREOF AND CONSEQUENTLY A PREDETERMINED SIRED CONCENTRATION OF CATALYST THEREIN.
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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |