Patent US3598790A successfully refreshed from Google Patents.
US3598790A
Expired / Lapsed
US
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Azlactone copolymers
Assignee: Roehm GmbH Darmstadt
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Filing: 1970-01-05
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Granted: 1971-08-10
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Expires: 1990-01-05
Abstract
Abstract COPOLYMERS OF (A) AN AZLACTONE 2-R3,4-R1,4-R2-2-OXAZOLIN-5-ONE HAVING A COPOLYMERISABLE ETHYLENICALLY UNSATURATED GROUP R3, (B) A COPOLYMERISABLE VINYLIDENE COMPOUND HAVING AT LEAST ONE FREE ALCOHOLIC HYDROXY GROUP THEREIN, AND (C) ONE OR MORE OLEFINICALLY UNSATURATED MONOMERS DISTINCT FROM AND COPOLYMERIZABLE WITH (A) AND (B), AS WELL AS COATINGS PREPARED BY CROSS-LINKING SUCH COPOLYMERS AT ROOM TEMPERATURES OR UP TO 80*C.
Inventors
- 👤 Fritz Kollinsky
- 👤 Klaus Hubner
- 👤 Gerhard Markert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:36
CPC Classifications
C; C09; C09D; C09D157/00; C09D157/04; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F8/00; C08L; C08L67/00; C09D125/00; C09D125/02; C09D125/04; C09D125/08; C09D125/14; C09D133/00; C09D133/04; C09D133/06; C09D133/062
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |