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Patent US3278511A successfully refreshed from Google Patents.
US3278511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of unsaturated hydrocarbons
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1963-03-28
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Granted: 1966-10-11
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Expires: 1983-03-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur W Langer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:21
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/903
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
54 words
A POLYMERIZATION CATALYST COMPOSITION COMPRISING THE REACTION PRODUCT OF AN ALKYL METAL COMPOUND WITH A POLYCYCLIC AROMATIC HYDROCARBON SELECTED FROM INDENE OF AZULENE; SAID REACTION PRODUCT BEING MIXED WITH A TRANSITION METAL HALIDE, THE MOLE RATIO OF THE AROMATIC HYDROCARBON TO ALKYL METAL COMPOUND BEING IN A MOLE RATIO OF BETWEEM 0.5 AND 10.
Claim 2
Dependent Claim
54 words
A POLYMERIZATION CATALYST COMPOSITION COMPRISING THE REACTION PRODUCT OF AN ALKYL METAL COMPOUND WITH A POLYCYCLIC AROMATIC HYDROCARBON SELECTED FROM INDENE OF AZULENE; SAID REACTION PRODUCT BEING MIXED WITH A TRANSITION METAL HALIDE, THE MOLE RATIO OF THE AROMATIC HYDROCARBON TO ALKYL METAL COMPOUND BEING IN A MOLE RATIO OF BETWEEM 0.5 AND 10.
Claim 3
Dependent Claim
29 words
A PROCESS FOR PRODUCING LINEAR HOMOPOLYMERS OR BLOCK COPOLYMERS OF ALPHA OLEFINS CONTAINING AT LEAST 3 CARBON ATOMS WHICH COMPRISES CONTACTING SAID OLEFINS WITH THE CATALYST OF CLAIM 1.
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |