Patent US3255147A successfully refreshed from Google Patents.
US3255147A
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US
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Compositions comprising a carboxylic acid amide interpolymer and a polyalkylene ether
Assignee: PPG Industries Inc
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Filing: 1961-04-25
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Granted: 1966-06-07
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Expires: 1981-04-25
Abstract
No abstract record available.
Inventors
- 👤 Robert C Krueger
- 👤 Erwin J Kapalko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:56
CPC Classifications
C; C09; C09D; C09D157/00; C09D157/06; C09D157/12; C08; C08L; C08L71/00; C08L71/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A COMPOSITION COMPRISING (1) AN INTERPOLYMER OF A POLYMERIZABLE UNSATURATED CARBOXYLIC ACID AMIDE AND AT LEAST ONE OTHER MONOMER CONTAINING A CH2=C<GROUP, SAID INTERPOLYMER CONTAINING FROM ABUT 2 PERCENT TO ABOUT 50 PERCENT BY WEIGHT OF SAID AMIDE AND BEING CHARACTERIZED BY HAVING AMIDO HYDROGEN ATOMS REPLACED BY THE STRUCTURE
Claim 2
Dependent Claim
50 words
A COMPOSITION COMPRISING (1) AN INTERPOLYMER OF A POLYMERIZABLE UNSATURATED CARBOXYLIC ACID AMIDE AND AT LEAST ONE OTHER MONOMER CONTAINING A CH2=C<GROUP, SAID INTERPOLYMER CONTAINING FROM ABUT 2 PERCENT TO ABOUT 50 PERCENT BY WEIGHT OF SAID AMIDE 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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |