Patents by Inventor K. Robert Lange

K. Robert Lange 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).

  • Removal of microbiological deposits
    Patent number: 4102707
    Abstract: The present disclosure is directed to methods and agents for detaching and dispersing microbiological deposits which occur on support materials in contact with aqueous systems. The method includes adding to the aqueous medium and thereby contacting the deposits with from about 1 to 100 parts per million of an agent which possesses hydrogen-bonding characteristics. Preferred agents include but are not limited to urea, ethanolamine, water-soluble acrylamide polymers, and water-soluble reaction products of amines, and epoxy or expoxy precursor compounds and mixtures thereof.
    Type: Grant
    Filed: June 10, 1976
    Date of Patent: July 25, 1978
    Assignee: Betz Laboratories, Inc.
    Inventor: K. Robert Lange
  • Removal of microbiological deposits
    Patent number: 4045244
    Abstract: The present disclosure is directed to methods and agents for detaching and dispersing microbiological deposits which occur on support materials in contact with aqueous systems. The method includes adding to the aqueous medium and thereby contacting the deposits with from about 1 to 100 parts per million of an agent which possesses hydrogen-bonding characteristics. Preferred agents include but are not limited to urea, ethanolamine, water-soluble acrylamide polymers, and water-soluble reaction products of amines, and epoxy or expoxy precursor compounds and mixtures thereof.
    Type: Grant
    Filed: May 5, 1976
    Date of Patent: August 30, 1977
    Assignee: Betz Laboratories, Inc.
    Inventor: K. Robert Lange
  • Chromate reduction in aqueous medium
    Patent number: 4033867
    Abstract: A method for reducing the residual chromate level in effluent waters comprising catalytic reduction of the chromate ion by hydrogen to the trivalent chromium state and removal of the chromium by passage through a cation exchange resin column or by base precipitation in a settling pond.
    Type: Grant
    Filed: October 31, 1975
    Date of Patent: July 5, 1977
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald F. Jacques, K. Robert Lange