US2509495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of interpolymers of aromatic vinyl hydrocarbons and oils
Assignee: Sherwin Williams Co
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Filing: 1947-08-30
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Granted: 1950-05-30
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Expires: 1967-08-30
Abstract
No abstract record available.
Inventors
- 👤 Hammond Wallace Thomas Craven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:49
CPC Classifications
C; C08; C08F; C08F242/00; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C09; C09D; C09D125/00; C09D125/02; C09D125/04; C09D125/08; C09D125/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR THE MANUFACTURE OF AN INTERPOLYMER OF AN AROMATIC VINYL HYDROCARBON AND A DRYING OIL WHICH COMPRISES HEATING A REACTION MIXTURE CONSISTING ESSENTIALLY OF AN AROMATIC VINYL HYDROCARBON, A DRYING OIL AND SULPHUR AT POLYMERISING TEMPERATURES, THE SULPHUR BEING PRESENT IN AN AMOUNT OF FROM 1/2% TO 5% BY WEIGHT OF THE DRYING OIL AND THE DRYING OIL BEING PRESENT IN AN AMOUNT OF FROM 10% TO 70% BY WEIGHT OF THE REACTION MIXTURE.
Claim 2
Dependent Claim
76 words
A PROCESS FOR THE MANUFACTURE OF AN INTERPOLYMER OF AN AROMATIC VINYL HYDROCARBON AND A DRYING OIL WHICH COMPRISES HEATING A REACTION MIXTURE CONSISTING ESSENTIALLY OF AN AROMATIC VINYL HYDROCARBON, A DRYING OIL AND SULPHUR AT POLYMERISING TEMPERATURES, THE SULPHUR BEING PRESENT IN AN AMOUNT OF FROM 1/2% TO 5% BY WEIGHT OF THE DRYING OIL AND THE DRYING OIL BEING PRESENT IN AN AMOUNT OF FROM 10% TO 70% BY WEIGHT OF THE REACTION MIXTURE.
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) | 1953-05-29 | 1953-11-28 | 1954-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-29 | 1957-11-28 | 1958-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-29 | 1961-11-28 | 1962-05-30 | $7700.00 | Window Closed / Lapsed |