Patents by Inventor Richard Tooth

Richard Tooth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Passivation of micro-discontinuous chromium deposited from a trivalent electrolyte
    Patent number: 10415148
    Abstract: A method of treating a substrate, wherein the substrate comprises a layer deposited from a trivalent chromium electrolyte, is described. The method includes the steps of providing an anode and the chromium(III) plated substrate as a cathode in an electrolyte comprising (i) a trivalent chromium salt; and (ii) a complexant; and passing an electrical current between the anode and the cathode to passivate the chromium(III) plated substrate. The substrate may be first plated with a plated nickel layer so that the chromium(III) plated layer is deposited over the nickel plated layer.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: September 17, 2019
    Assignee: MacDermid Acumen, Inc.
    Inventors: Marc Mertens, Richard Tooth, Trevor Pearson, Roderick D. Herdman, Terence Clarke
  • Color control of trivalent chromium deposits
    Patent number: 9758884
    Abstract: A method of adjusting and controlling the color of trivalent chromium deposits is provided. The method includes the steps of: (a) measuring the color of a trivalent chromium deposit standard; (b) adding one or more color enhancing additives to a trivalent chromium electrolyte; (c) contacting the substrate with the trivalent chromium electrolyte containing the one or more color enhancing additives to deposit trivalent chromium on the substrate; (d) measuring the color of the color-enhanced trivalent chromium deposit; (e) comparing the color of the color-enhanced chromium deposit to that of the standard; and (f) if necessary, adjusting the amount of the one or more color enhancing additives added to the trivalent chromium electrolyte if the color of the color-enhanced chromium deposit is outside of a desired optical variation from that of the standard color-enhanced chromium deposit. The color of the trivalent chromium deposit may be measured using a spectrophotometer.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: September 12, 2017
    Inventors: Stacey Hingley, Richard Tooth, Terence Clarke
  • Passivation of Micro-Discontinuous Chromium Deposited From a Trivalent Electrolyte
    Publication number: 20150252487
    Abstract: A method of treating a substrate, wherein the substrate comprises a layer deposited from a trivalent chromium electrolyte, is described. The method includes the steps of providing an anode and the chromium(III) plated substrate as a cathode in an electrolyte comprising (i) a trivalent chromium salt; and (ii) a complexant; and passing an electrical current between the anode and the cathode to passivate the chromium(III) plated substrate. The substrate may be first plated with a plated nickel layer so that the chromium(III) plated layer is deposited over the nickel plated layer.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 10, 2015
    Applicant: MacDermid Acumen, Inc.
    Inventors: Marc Mertens, Richard Tooth, Trevor Pearson, Roderick D. Herdman, Terence Clarke
  • Color Control of Trivalent Chromium Deposits
    Publication number: 20130213813
    Abstract: A method of adjusting and controlling the color of trivalent chromium deposits is provided. The method includes the steps of: (a) measuring the color of a trivalent chromium deposit standard; (b) adding one or more color enhancing additives to a trivalent chromium electrolyte; (c) contacting the substrate with the trivalent chromium electrolyte containing the one or more color enhancing additives to deposit trivalent chromium on the substrate; (d) measuring the color of the color-enhanced trivalent chromium deposit; (e) comparing the color of the color-enhanced chromium deposit to that of the standard; and (f) if necessary, adjusting the amount of the one or more color enhancing additives added to the trivalent chromium electrolyte if the color of the color-enhanced chromium deposit is outside of a desired optical variation from that of the standard color-enhanced chromium deposit. The color of the trivalent chromium deposit may be measured using a spectrophotometer.
    Type: Application
    Filed: February 16, 2012
    Publication date: August 22, 2013
    Inventors: Stacey Hingley, Richard Tooth, Terence Clarke