Patents by Inventor Leonard R. Howell

Leonard R. Howell 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).

  • Chromium-free antitarnish adhesion promoting treatment composition
    Patent number: 6852427
    Abstract: The present invention is directed to an aqueous, antitarnish and adhesion promoting treatment composition, comprising: zinc ions; metal ions selected from the group consisting of tungsten ions, molybdenum ions, cobalt ions, nickel ions, zirconium ions, titanium ions, manganese ions, vanadium ions, iron ions, tin ions, indium ions, silver ions, and combinations thereof; and optionally, an electrolyte that does not contain potassium or sodium ions; wherein the treatment composition is substantially free of chromium, and wherein the treatment composition forms a coating on a substrate or material that enhances adhesion of a polymer to the material. The present invention is also directed to materials coated with the above treatment composition, and methods of coating materials using the above composition.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: February 8, 2005
    Assignee: Olin Corporation
    Inventors: Leonard R. Howell, Szuchain F. Chen
  • Bond enhancement antitarnish coatings
    Patent number: 6837980
    Abstract: Aqueous electroplating solutions and methods are provided for the codeposition of zinc and chromium. The solutions include effective amounts of zinc, chromium, and hydroxyl ions. The solutions further include an effective amount of one or more ions of alkali metals, alkaline earth metals, or a combination thereof other than sodium and potassium, to in major part balance the hydroxyl ions. A preferred alkali metal is rubidium.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: January 4, 2005
    Assignee: Olin Corporation
    Inventors: Szuchain F. Chen, Leonard R. Howell
  • Water-based adhesive
    Patent number: 6797764
    Abstract: The present invention is directed to a water-based adhesive composition, comprising an admixture of: (A) about 5 to about 80 wt % of an aqueous polyester polyurethane dispersion; and (B) about 95 to about 20 wt % of an aqueous aliphatic polyurethane dispersion. The present invention is also directed to a method of adhering a workpiece or adherent to a substrate using the above water-based adhesive composition.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: September 28, 2004
    Assignee: Olin Corporation
    Inventors: Efraim Sagiv, Gary L. Diehl, Leonard R. Howell, Julius C. Fister
  • Bond enhancement antitarnish coatings
    Publication number: 20020112965
    Abstract: Aqueous electroplating solutions and methods are provided for the codeposition of zinc and chromium. The solutions include effective amounts of zinc, chromium, and hydroxyl ions. The solutions further include an effective amount of one or more ions of alkali metals, alkaline earth metals, or a combination thereof other than sodium and potassium, to in major part balance the hydroxyl ions. A preferred alkali metal is rubidium.
    Type: Application
    Filed: December 12, 2001
    Publication date: August 22, 2002
    Applicant: Olin Corporation, a corporation of the Commonwealth of Virginia
    Inventors: Szuchain F. Chen, Leonard R. Howell
  • Water-based adhesive
    Publication number: 20020002232
    Abstract: The present invention is directed to a water-based adhesive composition, comprising an admixture of: (A) about 5 to about 80 wt % of an aqueous polyester polyurethane dispersion; and (B) about 95 to about 20 wt % of an aqueous aliphatic polyurethane dispersion. The present invention is also directed to a method of adhering a workpiece or adherent to a substrate using the above water-based adhesive composition.
    Type: Application
    Filed: July 17, 2001
    Publication date: January 3, 2002
    Inventors: Efraim Sagiv, Gary L. Diehl, Leonard R. Howell, Julius C. Fister