US2521575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of maleic alkyds with mono-vinyl compounds
Assignee: Uniroyal Inc
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Filing: 1947-07-10
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Granted: 1950-09-05
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Expires: 1967-07-10
Abstract
No abstract record available.
Inventors
- 👤 Charles F Fisk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:58
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A COPOLYMER, THE MONOMERIC CONSTITUENTS OF WHICH CONSIST OF FROM 5 TO 99% OF AN ETHYLENIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF STYRENE AND METHYL METHACRYLATE, AND CORRESPONDINGLY FROM 95 TO 1% OF A LIQUID CONDENSATION POLYMER OF 2-ETHYLHEXANDEDIOL-1,3 WITH A MALEIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF MALEIC ACID AND MALEIC ACID ANHYDRIDE.
References Cited (Backward Citations)
US2305224A
Cited
US2480186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |