James Lindsay

US Patent:

46041680, Aug 5, 1986

Filed:

Dec 20, 1984

Appl. No.:

6/684268

Inventors:

Sonya W. Liu - Warren MI
James H. Lindsay - Fenton MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

C25D 554

US Classification:

204 30

Abstract:

A method of preparing the surface of molded mineral-filled nylon to receive an adherent electrodeposited metal coating comprising the steps of: exposing the surface to a plasma glow discharge; vacuum depositing a film of chromium or titanium onto the plasma-treated surface; vacuum depositing a nickel film onto the chromium or titanium film to prevent oxidation thereof; and then vacuum depositing a copper film onto the nickel film. The plasma gas is preferably inert (e. g. , argon, helium, etc. ) and metal deposition is effected so as to avoid oxidation of the chromium/titanium and nickel films during processing.

US Patent:

39575993, May 18, 1976

Filed:

Oct 2, 1974

Appl. No.:

5/511391

Inventors:

James H. Lindsay - Clarkston MI
John W. Neumann - Birmingham MI

Assignee:

Oxy Metal Industries Corporation - Warren MI

International Classification:

C25C 100
C25C 700

US Classification:

204105R

Abstract:

A process and apparatus designed to recover metal ions from a solution in which the anode is in the form of a vortex diffuser. The vortex diffuser radiates an electrolyte solution upon an ion collector plate in such a manner that the fluid impinges upon the collector perpendicular and then turning parallel to its surface to thereby wipe away any tendency toward dendritic metal formation.