US3740255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidity resistant paint systems
Assignee: Dulux Australia Ltd
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Filing: 1971-07-26
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Granted: 1973-06-19
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Expires: 1991-07-26
Abstract
Abstract CONVENTIONAL PAINT SYSTEMS CONSISTING OF AN UNDERCOAT FILM ADHERING TO A METALLIC SURFACE AND A SUPERIMPOSED FILM OF PROTECTIVE AND/OR DECORATIVE TOP-COAT ARE KNOWN TO PROVIDE INADEQUATE BLISTER RESISTANCE UNDER SOME CONDITIONS OF SERVICE. PAINT SYSTEMS OF IMPROVED HUMIDITY PERFORMANCE ARE NOW DISCLOSED IN WHICH THE UNDERCOAT IS MODIFIED BY THE ADDITION TO IT OF DISCRETE, POROUS, POLYMER PARTICLES TO PROVIDE THE DRY UNDERCOAT FILM WITH A WATER ABSORPTION OF 5-65% BY WEIGHT. THE PAINT SYSTEM AS A WHOLE MUST BE A NON-CONVERTIBLE COATING.
Inventors
- 👤 D Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:20
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/50; B05D7/52; B05D7/54; B05D7/14; B05D7/16; C; C09; C09D; C09D5/00; C09D5/002; C09D5/08; C09D7/00; C09D7/40; C09D7/65; C08; C08L; C08L75/00; C08L75/02; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |