Patents by Inventor Harold Leever

Harold Leever 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).

  • Mechanical galvanizing coating resistant to chipping, flaking and cracking
    Patent number: 4775601
    Abstract: Chipping, flaking, and cracking of mechanical galvanizing coatings applied on metal substrates is prevented by interposing between successive layers of plating metal, which are used in galvanizing the metal substrate, a layer of cushioning metal. Each interposed layer of cushioning metal imparts malleability to the coating such that chipping, cracking, and flaking is prevented or substantially reduced. The plating metal is preferably zinc, while the cushioning metal is preferably tin, lead, or mixtures thereof.
    Type: Grant
    Filed: July 9, 1987
    Date of Patent: October 4, 1988
    Assignee: MacDermid, Incorporated
    Inventors: Harold Leever, John J. Grunwald, Bryan Whitmore
  • Mechanical galvanizing coating resistant to chipping, flaking and, cracking
    Patent number: 4724168
    Abstract: Chipping, flaking, and cracking of mechanical galvanizing coatings applied on metal substrates is prevented by interposing between successive layers of plating metal, which are used in galvanizing the metal substrate, a layer of cushioning metal. Each interposed layer of cushioning metal imparts malleability to the coating such that chipping, cracking, and flaking is prevented or substantially reduced. The plating metal is preferably zinc, while the cushioning metal is preferably tin, lead, or mixtures thereof.
    Type: Grant
    Filed: July 17, 1986
    Date of Patent: February 9, 1988
    Assignee: MacDermid, Incorporated
    Inventors: Harold Leever, John J. Grunwald, Bryan Whitmore
  • Method and composition for electroless nickel deposition
    Patent number: 4600609
    Abstract: An electroless nickel plating method and composition is disclosed wherein a soluble acetylenic compound is included within the plating bath in small amounts effective to improve the specularity of the nickel deposit without substantially decreasing the electroless plating rate of the bath. The method and compositions of the invention are useful in producing mirror-bright electroless nickel coatings free of haze.
    Type: Grant
    Filed: May 3, 1985
    Date of Patent: July 15, 1986
    Assignee: MacDermid, Incorporated
    Inventors: Harold Leever, Leo J. Slominski