US3405109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: Phillips Petroleum Co
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Filing: 1965-01-25
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Granted: 1968-10-08
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Expires: 1985-01-25
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Rohlfing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:59
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/1812; B01J19/1837; B01J19/0006; B01J19/002; C; C08; C08F; C08F10/00; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00245; B01J2219/00252
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A PROCESS WHEREIN SOLID PARTICLE FORM POLYMER IS FORMED BY CONTINUOUSLY PUMPING POLYMERIZABLE HYDROCARBON MATERIAL IN LIQUID FORM THRU A SECTION OF CONDUIT BY MEANS OF AN IMPELLER OPERATING ON A SHAFT ON AN INBOARD BEARING WHEREIN POLYMER SETTLES AROUND SAID BEARING AND HINDERS THE OPERATION OF SAID IMPELLER, THE IMPROVEMENT COMPRISING CONTINUOUSLY FORCING A FLUID NONDELETERIOUS TO SAID REACTION FREE OF CATALYST THRU AN ANNULAR PASSAGEWAY SURROUNDING SAID SHAFT AND THRU SAID BEARING TO THE INTERIOR OF SAID CONDUIT SO AS TO PREVENT SETTLING OF POLYMER IN SAID BEARING, ON SAID SHAFT, AND BETWEEN SAID BEARING AND SAID IMPELLER.
Claim 2
Dependent Claim
101 words
IN A PROCESS WHEREIN SOLID PARTICLE FORM POLYMER IS FORMED BY CONTINUOUSLY PUMPING POLYMERIZABLE HYDROCARBON MATERIAL IN LIQUID FORM THRU A SECTION OF CONDUIT BY MEANS OF AN IMPELLER OPERATING ON A SHAFT ON AN INBOARD BEARING WHEREIN POLYMER SETTLES AROUND SAID BEARING AND HINDERS THE OPERATION OF SAID IMPELLER, THE IMPROVEMENT COMPRISING CONTINUOUSLY FORCING A FLUID NONDELETERIOUS TO SAID REACTION FREE OF CATALYST THRU AN ANNULAR PASSAGEWAY SURROUNDING SAID SHAFT AND THRU SAID BEARING TO THE INTERIOR OF SAID CONDUIT SO AS TO PREVENT SETTLING OF POLYMER IN SAID BEARING, ON SAID SHAFT, AND BETWEEN SAID BEARING AND SAID IMPELLER.
References Cited (Backward Citations)
US3244681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |