Patent US3812202A successfully refreshed from Google Patents.
US3812202A
Expired / Lapsed
US
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Reaction product of acrylamide polymers and polyphenolic precursor
Assignee: Cook Paint and Varnish Co
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Filing: 1971-10-08
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Granted: 1974-05-21
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Expires: 1991-10-08
Abstract
Abstract A RESINOUS COATING COMPOSITION COMPRISING THE REACTION PRODUCT OF (A) A POLYPHENOLIC PRECURSOR CONTAINING AT LEAST TWO PHENOLIC HYDROXYL GROUPS OBTAINED BY REACTING A PHENOL HAVING AT LEAST TWO PHENOLIC HYDROXYL GROUPS WITH A POLYEPOXIDE COMPOUND AND (B) AN ACRYLIC COPOLYMER OF METHYLOL ACRYLAMIDE OR METHYLOL DIACETONE ACRYLAMIDE WITH ANOTHER ETHYLENICALLY UNSATURATED MONOMER.
Inventors
- 👤 H Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:11
CPC Classifications
C; C09; C09D; C09D163/00; C09D133/00; C09D133/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |