Patent US2940944A successfully refreshed from Google Patents.
US2940944A
Expired / Lapsed
US
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Resinous coating compositions
Assignee: PPG Industries Inc
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Filing: 1956-01-19
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Granted: 1960-06-14
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Expires: 1976-01-19
Abstract
No abstract record available.
Inventors
- 👤 Roger M Christenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:17
CPC Classifications
C; C09; C09D; C09D167/00; B; B32; B32B; B32B27/00; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/56; C08F20/58; C08F20/62; C08F22/00; C08F22/36; C08F8/00; C08F8/28; C08L; C08L29/00; C08L29/02; C08L29/06; C08L57/00; C08L57/04; C08L67/00; C08L67/08; C09D125/00; C09D125/02; C09D125/04; C09D125/08; C09D127/00; C09D129/00; C09D129/02; C09D129/04; C09D129/06; C09D129/08; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/24; C09D133/26; C09D157/00; C09D157/04; C09D157/06; C09D157/12; C09D163/00; C09D167/08; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/20; H01G4/22; H01G4/221; C08F2800/00; C08F2800/20; C08L29/04; C08L33/00; C08L33/24; C08L33/26; C08L63/00; C08L67/06; C08L93/00; C08L93/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A HEAT HARDENABLE RESINOUS COMPOSITION COMPRISING AN ESTER OF AN EPOXY FATTY ACID CONTAINING AT LEAST 8 CARBON ATOMS, SAID ESTER CONTAINING ONLY ATOMS OF CARBON, HYDROGEN AND OXYGEN, AND AN INTERPOLYMER OF AN AMIDE SELECTED FROM THE GROUP CONSISTING OF ACRYLAMIDE, METHACRYLAMIDE AND ITACONIC DIAMIDE AND AT LEAST ONE OTHER MONOMER CONTAINING A >C=CH2 GROUP, SAID INTERPOLYMER CONTAINING FROM ABOUT 5 TO 45 PERCENT BY WEIGHT OF SAID AMIDE IN POLYMERIZED FORM BASED ON THE TOTAL WEIGHT OF SAID INTERPOLYMER AND BEING CHARACTERIZED BY HAVING AMIDO HYDROGEN ATOMS REPLACED BY THE STRUCTURE
Claim 2
Dependent Claim
93 words
A HEAT HARDENABLE RESINOUS COMPOSITION COMPRISING AN ESTER OF AN EPOXY FATTY ACID CONTAINING AT LEAST 8 CARBON ATOMS, SAID ESTER CONTAINING ONLY ATOMS OF CARBON, HYDROGEN AND OXYGEN, AND AN INTERPOLYMER OF AN AMIDE SELECTED FROM THE GROUP CONSISTING OF ACRYLAMIDE, METHACRYLAMIDE AND ITACONIC DIAMIDE AND AT LEAST ONE OTHER MONOMER CONTAINING A >C=CH2 GROUP, SAID INTERPOLYMER CONTAINING FROM ABOUT 5 TO 45 PERCENT BY WEIGHT OF SAID AMIDE IN POLYMERIZED FORM BASED ON THE TOTAL WEIGHT OF SAID INTERPOLYMER AND BEING CHARACTERIZED BY HAVING AMIDO HYDROGEN ATOMS REPLACED BY THE STRUCTURE
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) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |