Patents by Inventor Gerald D. Mercer

Gerald D. Mercer 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).

  • Synergistic compositions for corrosion and scale control
    Patent number: 4163733
    Abstract: Dimethylaminomethylenebis(phosphonic acid) is prepared by reacting dimethylformamide with phosphorous trichloride and treating the reaction mixture with alcohols or glycols and water. The phosphonic acid is combined with water soluble carboxylic acid polymers for use as a corrosion and scale inhibitor in aqueous systems. These compositions may also be combined with phosphorous acid and water soluble zinc salts.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: August 7, 1979
    Assignee: Buckman Laboratories, Inc.
    Inventors: John D. Buckman, Gerald D. Mercer, John D. Pera
  • Process for preparing dimethylaminomethylenebis(phosphonic acid)
    Patent number: 4157364
    Abstract: Dimethylaminomethylenebis(phosphonic acid) is prepared by reacting dimethylformamide with phosphorous trichloride and treating the reaction mixture with alcohols or glycols and water. The phosphonic acid is combined with water soluble carboxylic acid polymers for use as a corrosion and scale inhibitor in aqueous systems. These compositions may also be combined with phosphorous acid and water soluble zinc salts.
    Type: Grant
    Filed: February 8, 1978
    Date of Patent: June 5, 1979
    Assignee: Buckman Laboratories, Inc.
    Inventors: John D. Buckman, Gerald D. Mercer, John D. Pera
  • Amine-epichlorohydrin polymeric compositions
    Patent number: 4054542
    Abstract: Cationic, water-soluble, amine-epichlorohydrin polymeric compositions formed by reacting polymeric bis(3-chloro-2-hydroxypropyl) amines with tertiary amines are useful in papermaking processes, in water purification processes, textile manufacturing processes, and for the control of pests such as algae, bacteria and fungi.
    Type: Grant
    Filed: March 10, 1976
    Date of Patent: October 18, 1977
    Assignee: Buckman Laboratories, Inc.
    Inventors: John D. Buckman, Stanley J. Buckman, Gerald D. Mercer, John D. Pera
  • Method of controlling the growth of algae
    Patent number: 4018592
    Abstract: Poly[2-hydroxyethylene(dimethyliminio)ethylene(dimethyliminio)methylene dichloride] prepared by the reaction of N, N, N', N'-tetramethylethylenediamine with hydrochloric acid and epichlorohydrin is useful as an algicide.
    Type: Grant
    Filed: July 21, 1975
    Date of Patent: April 19, 1977
    Assignee: Buckman Laboratories, Inc.
    Inventors: Stanley J. Buckman, Gerald D. Mercer