Harold Narcus

US Patent:

41691717, Sep 25, 1979

Filed:

Feb 13, 1978

Appl. No.:

5/876895

Inventors:

Harold Narcus - Worcester MA

International Classification:

C23C 302

US Classification:

427264

Abstract:

An adherent bright metallic coating which may be any metal or alloy capable of being deposited electrolessly, is applied to the surface of a plastic or other dielectric part (or to a metal part) by an electroless process comprising suitable pretreatment of said surface, deposition of a primary electroless copper to produce an underlayer, then depositing a bright secondary electroless coating of the desired metal (the overlayer) with complete elimination of any subsequent electroplating process [usually required to achieve this brightness]. The required overlayer may also be limited to selected surface areas of a coated part by mechanically removing portions of the primary electroless copper prior to immersion of the part in the secondary electroless bath to produce the desired overlayer metal.

US Patent:

43812279, Apr 26, 1983

Filed:

Oct 8, 1981

Appl. No.:

6/309668

Inventors:

Harold Narcus - Worcester MA

Assignee:

Norton Company - Worcester MA

International Classification:

C25D 512
C25D 554
C25D 1500

US Classification:

204 16

Abstract:

Abrasive products comprising abrasive grit particles bonded to a preferably flexible backing with nickel are produced by current assisted deposition from an electroless plating bath. The current is applied between a nickel containing anode and the abrasive substrate as a cathode at a preferred rate of between 2-150 amperes per foot of substrate area. The final deposition of metal is preferably carried out electrolessly. Process promotes uniform deposition of bond between abrasive grits in single layer on substrate.

US Patent:

41600495, Jul 3, 1979

Filed:

Nov 7, 1977

Appl. No.:

5/849165

Inventors:

Harold Narcus - Worcester MA

International Classification:

C23C 302

US Classification:

427277

Abstract:

An adherent, bright metallic nickel coating is applied to the surface of a plastic or other dielectric part (or to a metal part) by an electroless process comprising, after suitable pretreatment of said surface, the deposition of a primary electroless nickel possessing special properties followed by a secondary electroless nickel of bright appearance with complete elimination of any subsequent electroplating process usually required to achieve this brightness. The nickel coating may be limited to selected surface areas of a coated part by mechanically removing portions of the primary coat prior to immersion of the part in a secondary electroless nickel bath.