HAROLD NARCUS
Engineering in Worcester, MA
License number
Massachusetts 11668
Expiration Date
Jun 30, 1996
Type
Chemical Engineer
Address
Address
Worcester, MA 01602
Personal information
See more information about HAROLD NARCUS at radaris.comName
Address
Phone
330 Newton St, Waltham, MA 02453
15 Vesper St, Worcester, MA 01602
Professional information
See more information about HAROLD NARCUS at trustoria.com
Bright Electroless Plating Process And Plated Articles Produced Thereby
Bright Electroless Plating Process And Plated Articles Produced Thereby
US Patent:
4169171, 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.
Bright Electroless Plating Process Producing Two-Layer Nickel Coatings On Dielectric Substrates
Bright Electroless Plating Process Producing Two-Layer Nickel Coatings On Dielectric Substrates
US Patent:
4160049, 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.
Process For The Manufacture Of Abrasive-Coated Tools
Process For The Manufacture Of Abrasive-Coated Tools
US Patent:
4381227, 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.