Patents Assigned to Buckman Laboratories, Inc.
  • 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
  • Methods of inhibiting the growth and proliferation of fungi using 3',5'-dihalo-4'-hydroxyacetophenone
    Patent number: 3976495
    Abstract: The preparation of 3',5'-dihalo-4'-hydroxyacetophenones and their use as fungicides are described.
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: August 24, 1976
    Assignee: Buckman Laboratories, Inc.
    Inventors: Stanley J. Buckman, Joseph G. E. Fenyes, John D. Pera, Lester A. Wienert
  • 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
  • Halogenated propyl esters of cyanodithioimidocarbonic acid
    Patent number: 3959328
    Abstract: Halogenated propyl esters of cyanodithioimidocarbonic acid are useful for inhibiting the growth and proliferation of bacteria, fungi and nematodes.
    Type: Grant
    Filed: April 14, 1975
    Date of Patent: May 25, 1976
    Assignee: Buckman Laboratories, Inc.
    Inventors: Stanley J. Buckman, Joseph G. E. Fenyes, John D. Pera
  • Organo-silica polymers
    Patent number: 3946061
    Abstract: Organo-silica polymers having the formula: ##EQU1## WHEREIN M AND N ARE INTEGERS INDEPENDENTLY REPRESENTING THE NUMBER OF UNITS; R represents --H, --CN, --CONH.sub.2, --CONH.sub.3 .sup.+, --COOH, --COO.sup.-, --COOM, or --COOR"; R' represents --NH--, --NH.sub.2 --.sup.+, --NR"--, --NR"H--.sup.+, or --CH.sub.2 --CHR--; --CH.sub.2 --CHR--; and whenever R' contains nitrogen, R is hydrogen; R" represents an alkyl or aryl radical; M represents an alkali metal; X represents an --OH, --O.sup.-, or --OM; are suitable as sequestering, dispersing, and flocculating agents.
    Type: Grant
    Filed: February 17, 1971
    Date of Patent: March 23, 1976
    Assignee: Buckman Laboratories, Inc.
    Inventors: Stanley J. Buckman, Rudolf F. Lang, Michael L. Mishler
  • Substituted alkylaryl ketones and methods of use as herbicides
    Patent number: 3933472
    Abstract: Ring and side chain substituted alkylaryl ketones are useful in controlling the growth of germinating and seedling weed grasses and germinating and seedling broadleaf weeds.
    Type: Grant
    Filed: October 15, 1974
    Date of Patent: January 20, 1976
    Assignee: Buckman Laboratories, Inc.
    Inventors: Stanley J. Buckman, Joseph G. E. Fenyes, Kenneth J. Flanagan, John D. Pera, Miguel L. Pulido
  • Phosphonic acid half-esters and their derivatives
    Patent number: 3932478
    Abstract: Unsubstituted and substituted dialkyl esters of phosphoric and diphosphonic acids, nuclearly brominated derivatives thereof, and metal mono-, bis-, and tris- derivatives of phosphonic acid half-esters are useful as ultraviolet light absorbers and as fire retardants.
    Type: Grant
    Filed: October 3, 1973
    Date of Patent: January 13, 1976
    Assignee: Buckman Laboratories, Inc.
    Inventors: Joseph G. E. Fenyes, Kenneth J. Flanagan