Patent US3075957A successfully refreshed from Google Patents.
US3075957A
Expired / Lapsed
US
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Catalytic process
Assignee: Dal Mon Research Co
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Filing: 1958-04-21
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Granted: 1963-01-29
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Expires: 1978-04-21
Abstract
No abstract record available.
Inventors
- 👤 Alelio Gaetano F D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:02
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE PROCESS OF POLYMERIZING AT A TEMPERATURE IN THE RANGE OF 20-200*C. AN OLEFIN HAVING NO MORE THAN 11 CARBON ATOMS AND HAVING A TERMINAL ETHYLENIC GROUP, IN AN INERT MEDIUM WITH A CATALYST COMPRISING THE REACTION PRODUCT OF (1) A VANADIUM CHLORIDE AND (2) AT LEAST ONE ORGANOMETAL COMPOUND OF THE FORMULA TI(R)N WHICH R IS A HYDROCARBON RADICAL HAVING NO MORE THAN 12 CARBON ATOMS THEREIN AND N IS A NUMERICAL VALUE GREATER THAN 2 AND CORRESPONDING TO THE VALENCY OF TI.
Claim 2
Dependent Claim
84 words
THE PROCESS OF POLYMERIZING AT A TEMPERATURE IN THE RANGE OF 20-200*C. AN OLEFIN HAVING NO MORE THAN 11 CARBON ATOMS AND HAVING A TERMINAL ETHYLENIC GROUP, IN AN INERT MEDIUM WITH A CATALYST COMPRISING THE REACTION PRODUCT OF (1) A VANADIUM CHLORIDE AND (2) AT LEAST ONE ORGANOMETAL COMPOUND OF THE FORMULA TI(R)N WHICH R IS A HYDROCARBON RADICAL HAVING NO MORE THAN 12 CARBON ATOMS THEREIN AND N IS A NUMERICAL VALUE GREATER THAN 2 AND CORRESPONDING TO THE VALENCY OF TI.
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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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |