Patents Assigned to Chapman Chemical Company
  • Wood preservation composition and method
    Patent number: 5084280
    Abstract: A paste composition for preserving wood which contains as its only active wood preservation ingredients a mixture of a water-dispersible copper naphthenate and borax.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: January 28, 1992
    Assignee: Chapman Chemical Company
    Inventor: Michael H. West
  • Sapstain control composition and method
    Patent number: 5009937
    Abstract: A composition for controlling sapstain and mold on wood having 20% more of moisture comprises an aqueous solution containing at least 0.05% by weight of chlorothalonil and borax in a quantity between 3 and 9 times greater than the weight of the chlorothalonil. The composition is applied to wood by dipping or spraying.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: April 23, 1991
    Assignee: Chapman Chemical Company
    Inventors: Michael H. West, Gregg Overman
  • Compositions and processing for preserving and/or coloring wood
    Patent number: 4937143
    Abstract: A method for both preserving and coloring wood which comprises in a first step contacting the wood with a liquid composition containing a biocidally effective amount of a copper compound, and in a second step contacting the wood with a liquid composition containing a biocidally effective amount of a dithiocarbamate compound selected from the group consisting of alkyl dithiocarbamates, alkylene dithiocarbamates and soluble salts thereof.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: June 26, 1990
    Assignee: Chapman Chemical Company
    Inventor: Michael H. West
  • Wood preservative composition and method
    Patent number: 4906660
    Abstract: A wood preservative composition and method comprising an aqueous solution of a monoalkanolamine and a copper octoate.
    Type: Grant
    Filed: May 13, 1987
    Date of Patent: March 6, 1990
    Assignee: Chapman Chemical Company
    Inventor: Michael H. West
  • Antimicrobial compositions and methods of using same
    Patent number: 4766113
    Abstract: Our invention pertains to various new compositions, methods for using such compositions and products treated with such compositions. Our new compositions include, among other things, certain antimicrobial agents solubilized with certain disubstituted aryl compounds.
    Type: Grant
    Filed: April 22, 1986
    Date of Patent: August 23, 1988
    Assignee: Chapman Chemical Company
    Inventors: Michael H. West, Fritz J. Nagel
  • Antimicrobial compositions and methods of using same
    Patent number: 4602011
    Abstract: Our invention pertains to various new compositions, methods for using such compositions and products treated with such compositions. Our new compositions include, among other things, certain antimicrobial agents solubilized with certain disubstituted aryl compounds.
    Type: Grant
    Filed: September 17, 1982
    Date of Patent: July 22, 1986
    Assignee: Chapman Chemical Company
    Inventors: Michael H. West, Fritz J. Nagel
  • Salts of polychlorinated phenols
    Patent number: 4255593
    Abstract: In the process for the manufacture of salts of halogenated phenols the economy is improved and health and pollution hazards are reduced by mixing an alkaline agent and the halogenated phenol with a small amount of a liquid medium that is solvent for the alkaline agent, conducting a reaction between the components in a closed system until a dry or almost dry product is obtained, agitating the mixture during at least a part of the liquid medium removal step and discharging the product in particulate form from the closed system.
    Type: Grant
    Filed: February 21, 1980
    Date of Patent: March 10, 1981
    Assignee: Chapman Chemical Company
    Inventor: Fritz J. Nagel