US2537018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymer and coating composition
Assignee: Monsanto Chemicals Ltd
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Filing: 1948-05-29
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Granted: 1951-01-09
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Expires: 1968-05-29
Abstract
No abstract record available.
Inventors
- 👤 Gerald R Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:05
CPC Classifications
C; C09; C09D; C09D135/00; C09D135/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
A COPOLYMER CONSISTING ESSENTIALLY OF THE COPOLYMERIZATION PRODUCT OF A POLYMERIZABLE VINYL COMPOUND HAVING THE GENERAL FORMULA: R-CH=2, WHERE R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF A PHENYL GROUP, A CHLORO SUBSTITUTED PHENYL GROUP AND A METHYL SUBSTITUTED PHENYL GROUP, AND A SECONDARY ALKYL ACID ESTER OF AN ETHYLENE A,B DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF MALEIC AND FUMARIC ACIDS, WHEREIN THE ALKYL GROUP CONTAINS FROM 4 TO 12 CARBON ATOMS, SAID VINYL COMPOUND AND SECONDARY ALKYL ACID ESTER BEING COPOLYMERIZED IN A MOLAL RATIO OF ABOUT 1:1 TO 2:1.
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) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |