Patent US2665283A successfully refreshed from Google Patents.
US2665283A
Expired / Lapsed
US
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Copolymers
Assignee: Interchemical Corp
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Filing: 1951-09-26
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Granted: 1954-01-05
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Expires: 1971-09-26
Abstract
No abstract record available.
Inventors
- 👤 Daniel J Carlick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:22
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F242/00; C08F236/00; C08F236/02; C08F236/04; C08F236/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A MODIFIED FATTY DRYING OIL SOLUBLE IN ALIPHATIC HYDROCARBON SOLVENTS, COMPRISING A COPOLYMER FORMED IN THE PRESENCE OF AN ORGANIC OXYGEN YIELDING CATALYST OF FROM 35 TO 75% OF DRYING OIL AND FROM 65 TO 25% OF UNSATURATED HYDROCARBONS CONSISTING OF 1 PART OF ISOPRENE TO FROM 3 TO 12 PARTS OF STYRENE.
Claim 2
Dependent Claim
53 words
A MODIFIED FATTY DRYING OIL SOLUBLE IN ALIPHATIC HYDROCARBON SOLVENTS, COMPRISING A COPOLYMER FORMED IN THE PRESENCE OF AN ORGANIC OXYGEN YIELDING CATALYST OF FROM 35 TO 75% OF DRYING OIL AND FROM 65 TO 25% OF UNSATURATED HYDROCARBONS CONSISTING OF 1 PART OF ISOPRENE TO FROM 3 TO 12 PARTS OF STYRENE.
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) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |