US2910458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tripolymer of styrene, c tertiary and non-tertiary monoolefin
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-06-28
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Granted: 1959-10-27
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Expires: 1974-06-28
Abstract
No abstract record available.
Inventors
- 👤 Hans G Goering
- 👤 Julius P Rocca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:12
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE PROCESS WHICH COMPRISES COPOLYMERIZING AT A TEMPERATURE OF 20-40*C. AND IN THE PRESENCE OF ALUMINUM CHLORIDE DISSOLVED IN ETHYL CHLORIDE, A FEED CONSISTING OF ABOUT 62-75% BY WEIGHT OF STYRENE AND 38-25% OF A MIXTURE OF C5 TETIARY AND NON-TERTIARY MONOOLEFINICALLY UNSATURATED HYDROCARBONS, SAID TERITIARY AND NONTERTIARY C5 MONOOLEFINICALLY UNSATURATED HYDROCARBONS BEING PRESENT IN A RATIO OF ABOUT 48% OF THE TERTIARY MONOOLEFINICALLY UNSATURATED HYDROCARBONS TO 52% OF THE NON-TERITARY MONOOLEFINICALLY UNSATURATED HYDROCARBONS.
Claim 2
Dependent Claim
74 words
THE PROCESS WHICH COMPRISES COPOLYMERIZING AT A TEMPERATURE OF 20-40*C. AND IN THE PRESENCE OF ALUMINUM CHLORIDE DISSOLVED IN ETHYL CHLORIDE, A FEED CONSISTING OF ABOUT 62-75% BY WEIGHT OF STYRENE AND 38-25% OF A MIXTURE OF C5 TETIARY AND NON-TERTIARY MONOOLEFINICALLY UNSATURATED HYDROCARBONS, SAID TERITIARY AND NONTERTIARY C5 MONOOLEFINICALLY UNSATURATED HYDROCARBONS BEING PRESENT IN A RATIO OF ABOUT 48% OF THE TERTIARY MONOOLEFINICALLY UNSATURATED HYDROCARBONS TO 52% OF THE NON-TERITARY MONOOLEFINICALLY UNSATURATED HYDROCARBONS.
References Cited (Backward Citations)
US2118945A
Cited
US2421082A
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US2274749A
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US2327705A
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US2609359A
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US2683138A
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US2604465A
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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) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |