Patent CA486479A successfully refreshed from Google Patents.
US3671331A
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Coated metal and method
Assignee: NOF Metal Coatings North America Inc
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Filing: 1970-03-16
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Granted: 1972-06-20
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Expires: 1990-03-16
Abstract
Abstract A WELDABLE, ADHERENT COATING PROVIDES ENCHANCED CORROSION PROTECTION FOR METAL SUBSTRATES AS WELL AS AUGMENTING PAINT ADHESION TO SUCH SUBSTRATES. THE COATING IS SUBSTANTIALLY RESIN-FREE AND COMPRISES A PULVERULENT METAL IN INTIMATE MIXTURE WITH THE RESIDUE FROM A HEXAVALENTCHROMIUM-CONTAINING COATING COMPOSITION FOR METAL SUBSTRATES. THE RESIDUE IS WATER INSOLUBLE AND IS OBTAINED BY HEATING THE SUBSTRATE CONTAINING APPLIED COATING COMPOSITION AND ALSO CONTAINING THE PULVERULENT METAL.
Inventors
- 👤 Irving Malkin
- 👤 Bert E Palm
- 👤 Jon A De Ridder
- 👤 Victor V Germano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:49
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/73; C23C22/74; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/1209; Y10T428/12104; Y10T428/12111; Y10T428/12125; Y10T428/12139; Y10T428/12493; Y10T428/12535; Y10T428/12625; Y10T428/1266; Y10T428/12667; Y10T428/12736; Y10T428/12771; Y10T428/12778
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |