US3257362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of olefin polymerization reactions
Assignee: Phillips Petroleum Co
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Filing: 1960-11-21
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Granted: 1966-06-21
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Expires: 1980-11-21
Abstract
No abstract record available.
Inventors
- 👤 Donald D Norwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:43
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/1812; B01J19/1837; B01J19/0006; C; C08; C08F; C08F10/00; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN A PROCESS FOR THE POLYMERIZATION OF A 1-OLEFIN BY CONTACTING SAID 1-OLEFIN WITH A CATALYST AND A DILUENT WITHIN A SMOOTH CONTINUOUS PATH REACTION ZONE IN TURBULENT FLOW AT A TEMPERATURE SUCH THAT SUBSTANTIALLY ALL OF THE POLYMER PRODUCED IS INSOLUBLE IN SAID DILUENT AND IS IN THE FORM OF SOLID PARTICULATE POLYMER HAVING A DENSITY GREATER THAN SAID DILUENT AND POLYMER PRODUCT IS WITH-
Claim 2
Dependent Claim
66 words
IN A PROCESS FOR THE POLYMERIZATION OF A 1-OLEFIN BY CONTACTING SAID 1-OLEFIN WITH A CATALYST AND A DILUENT WITHIN A SMOOTH CONTINUOUS PATH REACTION ZONE IN TURBULENT FLOW AT A TEMPERATURE SUCH THAT SUBSTANTIALLY ALL OF THE POLYMER PRODUCED IS INSOLUBLE IN SAID DILUENT AND IS IN THE FORM OF SOLID PARTICULATE POLYMER HAVING A DENSITY GREATER THAN SAID DILUENT AND POLYMER PRODUCT IS WITH-
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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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |