US2962451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization catalysts
Assignee: EIDP Inc
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Filing: 1955-10-24
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Granted: 1960-11-29
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Expires: 1975-10-24
Abstract
No abstract record available.
Inventors
- 👤 Schreyer Ralph Courtenay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:20
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A POLYMERIZATION CATALYST SUITABLE FOR USE IN THE POLYMERIZATION OF ETHYLENICALLY UNSATURATED HYDROCARBON MONOMERS, WHICH COMPRISES THE PRODUCT FORMED BY ADMIXING A VANDIUM COMPOUND OF THE CLASS CONSISTING OF VANADIUM HALIDES, OXYHALIDES AND ALKOXIDES, SAID VANADIUM BEING AT A VALENCE STATE OF THREE AND ABOVE, WITH A COMPOUND HAVING AT LEAST ONE METAL TO HYDROCARBOM BOND OF THE CLASS CONSISTING OF ALKYL ALUMINUM HALIDES AND METAL ALKYLS, WHEREIN THE METAL IS OF THE CLASS CONSISTING OF ALUMINUM, TIN AND LITHIUM ALUMINUM, SAID COMPOUND BEING ADMIXED IN SUFFICIENT QUANTITY TO REDUCE THE VANDIUM COMPOUND TO AT LEAST IN PART BELOW 3.
Claim 2
Dependent Claim
100 words
A POLYMERIZATION CATALYST SUITABLE FOR USE IN THE POLYMERIZATION OF ETHYLENICALLY UNSATURATED HYDROCARBON MONOMERS, WHICH COMPRISES THE PRODUCT FORMED BY ADMIXING A VANDIUM COMPOUND OF THE CLASS CONSISTING OF VANADIUM HALIDES, OXYHALIDES AND ALKOXIDES, SAID VANADIUM BEING AT A VALENCE STATE OF THREE AND ABOVE, WITH A COMPOUND HAVING AT LEAST ONE METAL TO HYDROCARBOM BOND OF THE CLASS CONSISTING OF ALKYL ALUMINUM HALIDES AND METAL ALKYLS, WHEREIN THE METAL IS OF THE CLASS CONSISTING OF ALUMINUM, TIN AND LITHIUM ALUMINUM, SAID COMPOUND BEING ADMIXED IN SUFFICIENT QUANTITY TO REDUCE THE VANDIUM COMPOUND TO AT LEAST IN PART BELOW 3.
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) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |