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US3795601A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrodiffused protective coating system

Assignee: Ford Motor Co
•
Filing: 1971-12-27
•
Granted: 1974-03-05
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Expires: 1991-12-27
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Abstract

Abstract A PROCESS FOR PRODUCING ARTICLE RESISTANT TO HIGH TEMPERATURE CORROSION WHICH COMPRISES THE COMBINATION OF (A) CONTROLLED ELECTRODEPOSITION OF PARTICULATE METAL, PARTICULARLY ALUMINUM, ALUMINUM ALLOY, A MIXTURE OF ALUMINUM AND AT LEAST ONE OTHER MTAL OR METAL OXIDE OR A MIXTURE OF ALUMINUM AND AT LEAST ONE ALLOY, AND A HEATFUGITIVE, CHEMICALLY IONIZABLE ORGANIC FILM-FORMER UPON THE SURFACE OF A SUBSTRATE SELECTED FROM NICKELS ALLOYS COBALT ALLOYS, AND IRON ALLOYS, AND (B) CONTROLLED HEAT TREATMENT OF THE THUS COATED SUBSTRATE IN AN AMBIENT ESSENTIALLY INERT TO THE PARTICLES DEPOSITED TO REMOVE THE ORGANIC FILM-FORMER AND TO DIFFUSE THE METAL OR METALS OF THE DEPOSIT INTO A SURFACE OF THE ALLOY SUBSTRATE.

Inventors

  • 👤 W Rentz
  • 👤 G Brewer
  • 👤 R Swider

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 18:59
CPC Classifications
C; C25; C25D; C25D13/00; C25D13/02

Claims Analysis

Total Claims: 0
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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) 1977-03-04 1977-09-03 1978-03-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-03-04 1981-09-03 1982-03-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-03-04 1985-09-03 1986-03-05 $7700.00 Window Closed / Lapsed

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