US3687738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated metal and method
Assignee: Diamond Shamrock Corp
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Filing: 1970-12-10
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Granted: 1972-08-29
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Expires: 1990-12-10
Abstract
Abstract A COATING OF CRO3 AND PULVERULENT METAL IN LIQUID MEDIUM PROXIDES EXCELLENT CORROSION PROTECTION FOR METAL SUBSTRATES AS WELL AS ELECTROCONDUCTIVITY, E.G., FOR WELDABILITY AND/OR APPLICATION OF ELETROCOAT PRIMER. THE PULVERULENT METAL, LIQUIDS, AND THE CRO3, AS FOR EXAMPLE SUPPLIED BY CHROMIC ACID, MAY BE PREMIXED AND APPLIED TO THE METAL SUBSTRATE. SUBSTRATES XONTAINING SUCH COMPOSITIONS ARE BAKED AND RESULTING COATED SURFACES ALSO EXHIBIT DESIRABLE ADHESION FOR SUBSEQUENTLY APPLIED TOPCOATS.
Inventors
- 👤 Irving Malkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:35
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/73; C23C22/74; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12104; Y10T428/12139; Y10T428/12493; Y10T428/1266; Y10T428/12667; Y10T428/12729; Y10T428/12771; Y10T428/12778
Claims Analysis
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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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |