Patent US2537016A successfully refreshed from Google Patents.
US2537016A
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Heteropolymers of vinyl aromatic compounds, alkyl acrylates, and alkyl half esters of ethylene dicarboxylic acids and process of preparing same
Assignee: Monsanto Chemicals Ltd
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Filing: 1947-01-22
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Granted: 1951-01-09
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Expires: 1967-01-22
Abstract
No abstract record available.
Inventors
- 👤 Gerald R Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:37
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F222/00; C08F222/10; C08F222/12; C08F222/16; C08F222/165
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
THE SYNTHETIC RESIN CONSISTING OF THE POLYMERIZATION PRODUCT OF A MIXTURE COMPRISING 10% TO 85% BY WEIGHT OF A VINYL COMPOUND HAVING THE STRUCTURAL FORMULA R-CH=CH2, WHERE R IS SELECTED FROM THE GROUP CONSISTING OF PHENYL, HALOGEN SUBSTITUTED PHENYL AND METHYL SUBSTITUTED PHENYL RADICALS, 10% TP 85% BY WEIGHT OF AN ALKYL ACRYLATE HAVING FROM 1 TO 8 CARBON ATOMS IN THE ALKYL GROUP AND 5% TO 60% BY WEIGHT OF A SECONDARY ALKYL HALF ESTER OF AN ETHYLENE A,B DICARBOXYLIC ACID, WHICH HALF ESTER HAS FROM 4 TO 8 CARBON ATOMS IN THE ALKYL GROUP.
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 |