Patents by Inventor Larry F. Wieserman

Larry F. Wieserman 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).

  • Metal oxide/hydroxide particles coated with phosphate esters
    Patent number: 4929589
    Abstract: An active material is disclosed comprising metal oxide/hydroxide particles having chemically bonded to reactive sites on a surface thereof, a monolayer of a phosphorous-containing organic material comprised of a phosphorous-containing group and a carbon-containing group. The bond to the metal oxide/hydroxide particle surface is formed by reaction of the phosphorous-containing group with the metal oxide/hydroxide particle surface, so that the carbon-containing group of the material is oriented away from the metal oxide/hydroxide surface.
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: May 29, 1990
    Assignee: Aluminum Company of America
    Inventors: Edward S. Martin, Larry F. Wieserman
  • Active material useful as adsorbent comprising metal oxide/hydroxide surfaces reacted with one or more phosphorous-containing materials having selected organic radicals attached thereto
    Patent number: 4904634
    Abstract: An active material is disclosed comprising a metal oxide/hydroxide surface having chemically bonded to reactive sites thereon, a monolayer of a phosphorus-containing organic material comprised of a phosphorus-containing group and a carbon-containing group. The bond to the metal oxide/hydroxide surface is formed by reaction of the phosphorus-containing group with the metal oxide/hydroxide surface, so that the carbon-containing group of the material is oriented away from the metal oxide/hydroxide surface.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: February 27, 1990
    Assignee: Aluminum Company of America
    Inventors: Larry F. Wieserman, Karl Wefers, Kathryn Cross, Edward S. Martin
  • Active material produced from metal oxide/hydroxide particles and phosphate esters
    Patent number: 4871711
    Abstract: An active material is disclosed comprising metal oxide/hydroxide particles having chemically bonded to reactive sites on a surface thereof, a monolayer of a phosphorous-containing organic material comprised of a phosphorous-containing group and a carbon-containing group. The bond to the metal oxide/hydroxide particle surface is formed by reaction of the phosphorous-containing group with the metal oxide/hydroxide particle surface, so that the carbon-containing group of the material is oriented away from the metal oxide/hydroxide surface.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: October 3, 1989
    Assignee: Aluminum Company of America
    Inventors: Edward S. Matin, Larry F. Wieserman
  • Adsorbent comprising metal oxide/hydroxide particles reacted with one or more phosphorous-containing materials having selected organic radicals attached thereto
    Patent number: 4788176
    Abstract: An active material is disclosed comprising metal oxide/hydroxide particles having chemically bonded to reactive sites on a surface thereof, a monolayer of a phosphorous-containing organic material comprised of a phosphorous-containing group and a carbon-containing group. The bond to the metal oxide/hydroxide surface is formed by reaction of the phosphorous-containing group with the metal oxide/hydroxide particle surface, so that the carbon-containing group of the material is oriented away from the metal oxide/hydroxide surface.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: November 29, 1988
    Assignee: Aluminum Company of America
    Inventors: Larry F. Wieserman, Karl Wefers, Kathryn Cross, Edward S. Martin
  • Chromatographic packings comprising metal oxide/hydroxide reacted with phosphonic acid
    Patent number: 4786628
    Abstract: A chromatographic packing material is disclosed comprising a metal oxide/hydroxide particle having chemically bonded to reactive sites on a surface thereof, a monolayer of one or more phosphonic acids. The bond to the metal oxide/hydroxide surface is formed by reaction of the phosphorous-containing group of the phosphonic acid with the metal oxide/hydroxide surface, so that the carbon-containing or non-polar group of the phosphonic acid is oriented away from the metal oxide/hydroxide surface.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: November 22, 1988
    Assignee: Aluminum Company of America
    Inventors: Larry F. Wieserman, John W. Novak, Jr., Christine M. Conroy, Karl Wefers
  • Surface treating mineral particles to reduce halide adsorption
    Patent number: 4781982
    Abstract: Mineral particles are surface treated with an alkali metal silicate, hydrogen peroxide, an acid, or an organophosphorus compound. A preferred surface treating method utilizes sodium silicate in aqueous solution at pH greater than 9, followed by neutralization with acid to precipitate a silica coating onto surface portions of the particles. The mineral particles are preferably alumina particles. The surface-treated alumina particles may be incorporated into fluoride dentifrices or compounded with halogenated hydrocarbons and polymeric resins to form flame-retardant polymer compounds.
    Type: Grant
    Filed: November 27, 1987
    Date of Patent: November 1, 1988
    Assignee: Aluminum Company of America
    Inventors: Lawrence L. Musselman, Larry F. Wieserman