Patent US3789046A successfully refreshed from Google Patents.
US3789046A
Expired / Lapsed
US
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Aqueous air-and oven-drying coating compositions
Assignee: Huels AG
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Filing: 1972-05-12
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Granted: 1974-01-29
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Expires: 1992-05-12
Abstract
Abstract AQUEOUS BASED COATING COMPOSITIONS HAVING GOOD WATER RESISTANCE ARE PRODUCED FROM AMMONIA- OR AMINE-NEUTRALIZED ADDUCTS OF MALEIC ANHYDRIDE AND LIKE DICARBOXYLIC ACIDS AND ANHYDRIDES AND BUTADIENE HOMOPOLYMERS HAVING AT LEAST 50% CIS 1.4-STRUCTURE AND A VISCOSITY OF 3030,000 CPS. AT 50*C., PREFERABLY COMBINED WITH A MALEIC ANHYDRIDE OR LIKE ADDUCT OF A NATURAL DRYING OR SEMIDRYING OIL.
Inventors
- 👤 K Heidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:38
CPC Classifications
C; C09; C09D; C09D155/00; C09D155/04; C08; C08C; C08C19/00; C08C19/28; C09D191/00; C09D191/005
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |