Patents by Inventor John D. Buckman

John D. Buckman 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).

  • Slime control compositions and methods of using the same
    Patent number: 4293559
    Abstract: The present invention relates to certain compositions and processes useful for inhibiting the growth of microorganisms in water and, in particular, water used for industrial purposes; for example, in the manufacture of paper, in cooling water systems in effluent water treatment, and in secondary recovery petroleum operations. The novel processes and compositions of the present invention are processes or mixtures which show unexpected synergistic activity against microorganisms, including bacteria, sulfate-reducing bacteria, fungi, and algae, which produce slime in aqueous systems where such slime is objectionable from either an operational or aesthetic point of view. Specifically, the invention is directed to the use of compositions comprising 2-(thio-cyanomethylthio)benzothiazole and 2'-hydroxyethyl 2,3-dibromopropionate or 2'-hydroxyethyl 2-bromoacrylate.
    Type: Grant
    Filed: March 29, 1978
    Date of Patent: October 6, 1981
    Assignee: Buckman Laboratories, Inc.
    Inventors: John D. Buckman, Stanley J. Buckman, Betty S. Johnson, John D. Pera
  • Dialkylamino-N,N-bis(phosphonoalkylene)alkylamines and use in aqueous systems as precipitation and corrosion inhibitors
    Patent number: 4234511
    Abstract: Dialkylamino-N,N-bis(phosphonoalkylene)alkylamines, salts, and specifically the hydrochlorides thereof prepared by reacting an unsymmetrical dimethylaminoalkylamine hydrochloride with phosphorous acid and an aldehyde are useful in various industrial processes including acting as corrosion and scale inhibitors in aqueous systems wherein such corrosion and scale problems exist. Quaternized dialkylamino-N,N-bis(phosphonoalkylene)alkylamines suitable for the same uses are prepared by the treatment of an aqueous solution of a dialkylamine-N,N-bis(phosphonoalkylene)alkylamine with an epoxide or a halohydrin.
    Type: Grant
    Filed: July 26, 1979
    Date of Patent: November 18, 1980
    Assignee: Buckman Laboratories, Inc.
    Inventor: John D. Buckman
  • Water-soluble dispersions of high molecular water-soluble polymers containing a surfactant and a water-soluble organic carrier which is a hydroxy compound containing repeating alkylene oxide units
    Patent number: 4176107
    Abstract: This invention is related to liquid polymer compositions and to methods of preparing these compositions which comprise a high molecular weight water-soluble vinyl addition polymer, water, one or more surfactants, and a water-soluble polyalkylene glycol, or water-soluble ethoxylated alcohol, alkylphenol or fatty acid.
    Type: Grant
    Filed: January 20, 1978
    Date of Patent: November 27, 1979
    Assignee: Buckman Laboratories, Inc.
    Inventors: John D. Buckman, Wood E. Hunter, John D. Pera, Robert M. Taylor
  • 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
  • Certain stabilized dithiocarbomate pesticidal compositions and methods of using same
    Patent number: 3973034
    Abstract: Pesticidal compositions comprised of alkali-metal salts of hydroxymethyldithiocarbamic acids in aqueous media are stabilized by addition of alkaline material thereto.
    Type: Grant
    Filed: May 28, 1974
    Date of Patent: August 3, 1976
    Assignee: Buckman Laboratories, Inc.
    Inventors: John D. Buckman, John D. Pera