Patents by Inventor Wayne L. Henry

Wayne L. Henry 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).

  • Multipurpose scale preventer/remover
    Patent number: 5183573
    Abstract: A process for preventing or removing calcium and rust scale deposits from surfaces which are in contact with aqueous systems comprising adding to the aqueous system 3,5-bis(di-N,N-(carboxymethyl)aminomethyl)-4-hydroxybenzenesulfonic acid in an amount effective to remove the scale and rust deposits.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: February 2, 1993
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Robert P. Kreh, Wayne L. Henry
  • Corrosion control
    Patent number: 5022926
    Abstract: A method of removing iron contaminants in an aqueous system by introducing and maintaining within the system at least one ortho dihydroxyaromatic compound having at least one electron withdrawing group pendant from the aromatic ring and, further, a method of inhibiting calcium scale formation in the presence of iron contaminants by utilizing at least one dehydroxyaromatic compound in combination with calcium scale inhibitors.
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: June 11, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Robert P. Kreh, Joseph T. Lundquist, Wayne L. Henry, John A. Kelly, Vincent R. Kuhn
  • Corrosion inhibition
    Patent number: 4935205
    Abstract: A method of inhibiting corrosion of iron or iron-based alloys which are in contact with an aqueous system by introducing and maintaining within the system at least one ortho dihydroxyaromatic compound having at least one electron withdrawing group pendant from the aromatic ring.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: June 19, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Robert P. Kreh, Joseph T. Lundquist, Wayne L. Henry