Patent US262262A successfully refreshed from Google Patents.
Patent US3196116A successfully refreshed from Google Patents.
US3196116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiply metallated polymerization catalysts
Assignee: ConocoPhillips Co
•
Filing: 1957-02-19
•
Granted: 1965-07-20
•
Expires: 1977-02-19
Abstract
No abstract record available.
Inventors
- 👤 Oskar E H Klopfer
- 👤 Jr Oliver W Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:40
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F10/00; C08F257/00; C08F257/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A SOLID CATALYST FOR THE PRODUCTION OF HIGH POLYMERS OF POLYMERIZABLE UNSATURATED HYDROCARBONS WHICH COMPRISES (A) ALKALI METAL METALLATED ARYL HYDROCARBON POLYMER IN WHICH THE ALKALI METAL IS ATTACHED TO THE POLYMER BY A METAL TO CARBON BOND, (B) FRIEDED-CRAFTS COMPOUND COMPRISING HALOGEN AND A METAL AND (C) PARTICULATE ALKALI METAL HALIDE.
Claim 2
Dependent Claim
52 words
A SOLID CATALYST FOR THE PRODUCTION OF HIGH POLYMERS OF POLYMERIZABLE UNSATURATED HYDROCARBONS WHICH COMPRISES (A) ALKALI METAL METALLATED ARYL HYDROCARBON POLYMER IN WHICH THE ALKALI METAL IS ATTACHED TO THE POLYMER BY A METAL TO CARBON BOND, (B) FRIEDED-CRAFTS COMPOUND COMPRISING HALOGEN AND A METAL AND (C) PARTICULATE ALKALI METAL HALIDE.
References Cited (Backward Citations)
US1938870A
Cited
US2380475A
Cited
US2481273A
Cited
US2491116A
Cited
US2520439A
Cited
US2455058A
Cited
US2464685A
Cited
US2739141A
Cited
US2692257A
Cited
BE538782A
Cited
US3047513A
Cited
US2721189A
Cited
US3058963A
Cited
US3007881A
Cited
US3007907A
Cited
US2881156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |