US2912419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon polymerization (group 5a metal oxide and air3 initiator)
Assignee: Standard Oil Co
•
Filing: 1955-03-08
•
Granted: 1959-11-10
•
Expires: 1975-03-08
Abstract
No abstract record available.
Inventors
- 👤 Edwin F Peters
- 👤 Bernard L Evering
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:38
CPC Classifications
C; C08; C08F; C08F10/00; B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22; B01J23/24; B01J23/26; B01J23/28; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A POLYMERIZATION PROCESS FOR THE PRODUCTION OF A NORMALLY SOLID POLYMER, THE STEPS OF CONTACTING A CHARGING STOCK COMPRISING A MONO-OLEFINIC HYDROCARBON HAVING 2 TO 4 CARBON ATOMS, INCLUSIVE, PER MOLECULE WITH A CATALYST COMPRISING AN OXIDE OF A METAL OF GROUP 5A OF THE PERIODIC TABLE AND WITH A CO-CATALYST HAVING THE FORMULA AIR3, IN WHICH R IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND MONOVALENT HYDROCARBON RADICALS.
Claim 2
Dependent Claim
71 words
IN A POLYMERIZATION PROCESS FOR THE PRODUCTION OF A NORMALLY SOLID POLYMER, THE STEPS OF CONTACTING A CHARGING STOCK COMPRISING A MONO-OLEFINIC HYDROCARBON HAVING 2 TO 4 CARBON ATOMS, INCLUSIVE, PER MOLECULE WITH A CATALYST COMPRISING AN OXIDE OF A METAL OF GROUP 5A OF THE PERIODIC TABLE AND WITH A CO-CATALYST HAVING THE FORMULA AIR3, IN WHICH R IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND MONOVALENT HYDROCARBON RADICALS.
References Cited (Backward Citations)
US1672308A
Cited
US1844998A
Cited
US2699457A
Cited
US2684951A
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US2691647A
Cited
US2781410A
Cited
US2727024A
Cited
BE534792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |