Patent US3248179A successfully refreshed from Google Patents.
US3248179A
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Method and apparatus for the production of solid polymers of olefins
Assignee: Phillips Petroleum Co
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Filing: 1962-02-26
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Granted: 1966-04-26
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Expires: 1982-02-26
Abstract
No abstract record available.
Inventors
- 👤 Donald D Norwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:17
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/1812; B01J19/1837; B01J8/00; B01J8/18; B01J8/20; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A REACTOR COMPRISING, IN COMBINATION: A SUBSTANTIALLY INTERNALLY UNOBSTRUCTED LOOP CONDUIT; PROPELLING MEANS POSITIONED WITHIN SAID LOOP CONDUIT; A MONOMER INLET TO SAID LOOP CONDUIT; A PLURALITY OF RADIAL VANES POSITIONED IN SAID CONDUIT ADJACENT AND DOWNSTREAM OF SAID PROPELLING MEANS TO PREVENT SWIRLING IMAPRTED BY SAID PROPELLING MEANS; AND OUTLET MEANS FROM SAID CONDUIT.
Claim 2
Dependent Claim
55 words
A REACTOR COMPRISING, IN COMBINATION: A SUBSTANTIALLY INTERNALLY UNOBSTRUCTED LOOP CONDUIT; PROPELLING MEANS POSITIONED WITHIN SAID LOOP CONDUIT; A MONOMER INLET TO SAID LOOP CONDUIT; A PLURALITY OF RADIAL VANES POSITIONED IN SAID CONDUIT ADJACENT AND DOWNSTREAM OF SAID PROPELLING MEANS TO PREVENT SWIRLING IMAPRTED BY SAID PROPELLING MEANS; AND OUTLET MEANS FROM SAID CONDUIT.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |