Patents by Inventor Richard G Tooth

Richard G 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).

  • Dark colored chromium based electrodeposits
    Patent number: 9347144
    Abstract: An aqueous acidic trivalent chromium electrolyte comprising trivalent chromium ions and a complexing agent for maintaining the trivalent chromium ions in solution is provided in which the aqueous electrolyte comprises additives capable of producing a coating on a substrate having a desired dark hue. The additives typically comprise a dispersion of colloidal silica and an additional additive selected from thiocyanate ions and/or iron ions. The electrolyte is used in a method of producing the desired dark-hued decorative chromium coating on a substrate by electrodeposition.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: May 24, 2016
    Inventors: Roshan V. Chapaneri, Richard G. Tooth, Roderick D. Herdman, Stacey L. Handy
  • Dark Colored Chromium Based Electrodeposits
    Publication number: 20120312694
    Abstract: An aqueous acidic trivalent chromium electrolyte comprising trivalent chromium ions and a complexing agent for maintaining the trivalent chromium ions in solution is provided in which the aqueous electrolyte comprises additives capable of producing a coating on a substrate having a desired dark hue. The additives typically comprise a dispersion of colloidal silica and an additional additive selected from thiocyanate ions and/or iron ions. The electrolyte is used in a method of producing the desired dark-hued decorative chromium coating on a substrate by electrodeposition.
    Type: Application
    Filed: August 24, 2012
    Publication date: December 13, 2012
    Inventors: Roshan V. CHAPANERI, Richard G. TOOTH, Roderick D. HERDMAN, Stacey L. HANDY
  • Dark colored chromium based electrodeposits
    Patent number: 8273235
    Abstract: An aqueous acidic trivalent chromium electrolyte comprising trivalent chromium ions and a complexing agent for maintaining the trivalent chromium ions in solution is provided in which the aqueous electrolyte comprises additives capable of producing a coating on a substrate having a desired dark hue. The additives typically comprise a dispersion of colloidal silica and an additional additive selected from thiocyanate ions and/or iron ions. The electrolyte is used in a method of producing the desired dark-hued decorative chromium coating on a substrate by electrodeposition.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: September 25, 2012
    Inventors: Roshan V Chapaneri, Richard G Tooth, Roderick D. Herdman, Stacey L. Handy
  • Dark Colored Chromium Based Electrodeposits
    Publication number: 20120111731
    Abstract: An aqueous acidic trivalent chromium electrolyte comprising trivalent chromium ions and a complexing agent for maintaining the trivalent chromium ions in solution is provided in which the aqueous electrolyte comprises additives capable of producing a coating on a substrate having a desired dark hue. The additives typically comprise a dispersion of colloidal silica and an additional additive selected from thiocyanate ions and/or iron ions. The electrolyte is used in a method of producing the desired dark-hued decorative chromium coating on a substrate by electrodeposition.
    Type: Application
    Filed: November 5, 2010
    Publication date: May 10, 2012
    Inventors: Roshan V. Chapaneri, Richard G. Tooth, Roderick D. Herdman, Stacey L. Handy