Patent US2961426A successfully refreshed from Google Patents.
US2961426A
Expired / Lapsed
US
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Copolymers of omicron-acrylyl phenols and chelates thereof
Assignee: EIDP Inc
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Filing: 1956-01-05
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Granted: 1960-11-22
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Expires: 1976-01-05
Abstract
No abstract record available.
Inventors
- 👤 Vaughn A Engelhardt
- 👤 Hilmer E Winberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:07
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/42; C08F16/00; C08F16/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A COPOLYMER OF A MONOHYDRIC O-ACRYLYLPHENOL WHEREIN ANY OTHER RING SUBSTITUENT IS TAKEN FROM THE GROUP CONSISTING OF HALOGEN AND ALKOXY, ARYLOXY AND HYDROCARBON RADICALS HAVING 1-6 CARBON ATOMS AND FREE FROM NONBENEZOID UNSATURATION, WITH A SECOND ADDITION POLYMERIZABLE MONOETHYLENICALLY UNSATURATED MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ACID ESTERS OF 1-6 CARBON ATOM ALKANOLS AND CYCLOALKANOLS, ACRYLONITRILE, METHACRYLAMIDE, AND STYRENE, THE COPOLYMER CONTAINING 3-50% BY WEIGHT OF UNITS OF THE O-ACRYLYLPHENOL.
Claim 2
Dependent Claim
75 words
A COPOLYMER OF A MONOHYDRIC O-ACRYLYLPHENOL WHEREIN ANY OTHER RING SUBSTITUENT IS TAKEN FROM THE GROUP CONSISTING OF HALOGEN AND ALKOXY, ARYLOXY AND HYDROCARBON RADICALS HAVING 1-6 CARBON ATOMS AND FREE FROM NONBENEZOID UNSATURATION, WITH A SECOND ADDITION POLYMERIZABLE MONOETHYLENICALLY UNSATURATED MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ACID ESTERS OF 1-6 CARBON ATOM ALKANOLS AND CYCLOALKANOLS, ACRYLONITRILE, METHACRYLAMIDE, AND STYRENE, THE COPOLYMER CONTAINING 3-50% BY WEIGHT OF UNITS OF THE O-ACRYLYLPHENOL.
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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |