Patent US3450800A successfully refreshed from Google Patents.
US3450800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersing gases into liquids
Assignee: Phillips Petroleum Co
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Filing: 1964-01-31
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Granted: 1969-06-17
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Expires: 1984-01-31
Abstract
No abstract record available.
Inventors
- 👤 Dexter E Smith
- 👤 Arthur B Broerman
- 👤 Robert M Keeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:22
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/232; B01F25/00; B01F25/30; B01F25/31; B01F25/313; B01F25/3132; C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S261/00; Y10S261/75; Y10S526/00; Y10S526/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A PROCESS FOR POLYMERIZING PROPYLENE WHEREIN A LIQUID PROPYLENE STREAM CONTAINING A MEASURED CONCENTRATION OF HYDROGEN IS PASSED TO A POLYMERIZATION ZONE, THE METHOD OF MAINTAINING THE HYDROGEN CONCENTRATION OF THE PROPYLENE STREAM SUBSTANTIALLY CONSTANT WHICH COMPRISES PASSING SAID PROPYLENE STREAM UPWARDLY THROUGH A CONDUIT; INTRODUCING HYDROGEN GAS INTO SAID PROPYLENE STREAM THROUGH A PLURALITY OF CAPILLARY OPENINGS SPACED AT DIFFERENT DISTANCES OVER THE CROSS-SECTIONAL AREA OF THE LIQUID STREAM AND POSITIONED SUBSTANTIALLY NORMAL TO THE FLOW OF PROPYLENE; SENSING THE HYDROGEN CONCENTRATION OF THE PROPYLENE STREAM SUBSTANTIALLY IMMEDIATELY DOWNSTREAM FROM THE HYDROGEN GAS INTRODUCTION; AND CONTROLLING THE QUANTITY OF HYDROGEN PASSED INTO SAID PROPYLENE IN RESPONSE TO THE SENSED HYDROGEN CONCENTRATION OF THE PROPYLENE STREAM.
Claim 2
Dependent Claim
117 words
IN A PROCESS FOR POLYMERIZING PROPYLENE WHEREIN A LIQUID PROPYLENE STREAM CONTAINING A MEASURED CONCENTRATION OF HYDROGEN IS PASSED TO A POLYMERIZATION ZONE, THE METHOD OF MAINTAINING THE HYDROGEN CONCENTRATION OF THE PROPYLENE STREAM SUBSTANTIALLY CONSTANT WHICH COMPRISES PASSING SAID PROPYLENE STREAM UPWARDLY THROUGH A CONDUIT; INTRODUCING HYDROGEN GAS INTO SAID PROPYLENE STREAM THROUGH A PLURALITY OF CAPILLARY OPENINGS SPACED AT DIFFERENT DISTANCES OVER THE CROSS-SECTIONAL AREA OF THE LIQUID STREAM AND POSITIONED SUBSTANTIALLY NORMAL TO THE FLOW OF PROPYLENE; SENSING THE HYDROGEN CONCENTRATION OF THE PROPYLENE STREAM SUBSTANTIALLY IMMEDIATELY DOWNSTREAM FROM THE HYDROGEN GAS INTRODUCTION; AND CONTROLLING THE QUANTITY OF HYDROGEN PASSED INTO SAID PROPYLENE IN RESPONSE TO THE SENSED HYDROGEN CONCENTRATION OF THE PROPYLENE STREAM.
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) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |