US3689446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophoretic coating
Assignee: Dai Nippon Toryo Co Ltd
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Filing: 1969-12-08
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Granted: 1972-09-05
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Expires: 1989-12-08
Abstract
Abstract AN ELECTROPHORETIC COATING COMPOSITION COMPRISING A POLYBUTADIENE WATER-SOLUBLE RESIN PREPARED BY ESTERIFYING AN ADDUCT OF BUTADIENE POLYMER CONTAINING 70% OR MORE OF 1,2-BONDING AND MALEIC ANYDRIDE, THE ADDITION DEGREE OF MALEIC ANHYDRIDE BEING 5-20 WEIGHT PERCENT, WITH AN ESTERIFYING AGENT HAVING AT LEAST ONE PROMARY OR SECONDARY ALCOHOLIC HYDROXYL GROUP IN ITS MOLECULE TO AN ESTERIFICATION DEGREE OF 10-50% PROVIDES A COATING HAVING AN EXCELLENT APPEARANCE, AND WHICH IS FREE OF WATER-MARK WHEN APPLIED BY ELECTRODEPOSITION.
Inventors
- 👤 Akio Furuya
- 👤 Masaaki Hayashi
- 👤 Kouichi Nagami
- 👤 Masakatsu Uchida
- 👤 Sakae Nishino
- 👤 Toshikatsu Asada
- 👤 Yasuo Nagao
- 👤 Hiroyoshi Matsuda
- 👤 Harufumi Tsuchiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:38
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4403; C08; C08C; C08C19/00; C08C19/28; Y; Y10; Y10S; Y10S106/00; Y10S106/901
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |