Patents Assigned to Lester Laboratories, Inc.
  • Patent number: 4452709
    Abstract: An antistatic composition is provided for improving the conductivity of a wide variety of substrates. The composition comprises an aqueous solution containing(a) an anionic organic phosphate surfactant of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of ##STR2## wherein --(R.sub.2)-- is selected from the group consisting of branched and linear alkylene having 4 to 18 carbon atoms, and wherin R.sub.3 and R.sub.4 are the same or different and are selected from the group consisting of hydrogen and branched and linear alkyl of 4 to 12 carbon atoms,and wherein n.sub.1 is an integer of 4 to 14, and(b) disodium phosphate, wherein the weight ratio of ingredient (a) to ingredient (b) is from about 1:20 to about 20:1.
    Type: Grant
    Filed: October 9, 1981
    Date of Patent: June 5, 1984
    Assignee: Lester Laboratories, Inc.
    Inventors: Lester A. Friedman, Cecil D. Kwong, James D. Faulkner
  • Patent number: 4314308
    Abstract: A process for neutralizing a static electric charge on a surface consists essentially of contacting an atmosphere with at least one aqueous static charge composition by spraying an effective amount of the composition into the atmosphere, and then contacting the resulting treated atmosphere with a surface having static electric charge thereon to thereby neutralize at least a portion of the charge. The static charge composition is prepared from substantially deionized water to thereby increase the rate at which the static charge is neutralized.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: February 2, 1982
    Assignee: Lester Laboratories, Inc.
    Inventor: James D. Faulkner
  • Patent number: 4169279
    Abstract: A method for simultaneously neutralizing positive and negative static electric charges on surfaces consisting essentially of contacting a first atmosphere with a positive static charge composition (108) by spraying (125) an effective amount of the composition into the atmosphere, contacting a second atmosphere with a negative static charge composition (8) by spraying (25) an effective amount of the negative static charge composition into the second atmosphere, mixing (126) the resulting treated first atmosphere with the resulting treated second atmosphere to thereby form a mixed atmosphere, and contacting at least one surface (16) having positive and negative static electric charges thereon with the mixed atmosphere to thereby simultaneously neutralize positive and negative static charges on the surface.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: September 25, 1979
    Assignee: Lester Laboratories, Inc.
    Inventors: Lester A. Friedman, Jr., James D. Faulkner
  • Patent number: 4152288
    Abstract: A composition comprising an aqueous solution of a quaternary ammonium compound and a surfactant can be sprayed into an atmosphere and the resulting treated atmosphere is capable of neutralizing both positive and negative static charges on objects that come in contact with the treated atmosphere.
    Type: Grant
    Filed: September 13, 1977
    Date of Patent: May 1, 1979
    Assignee: Lester Laboratories, Inc.
    Inventors: Lester A. Friedman, Jr., James D. Faulkner, Allen D. King, Jr.
  • Patent number: 4077914
    Abstract: A process for imparting a positive electrical charge to a gaseous stream comprises contacting the stream with an aqueous solution comprising about 500-3000 ppm of a composition consisting essentially of borax and a surfactant. In the composition, borax and the surfactant are present in a weight ratio of borax to surfactant of about 1.2:1 to about 15:1. The process and composition are useful in the control of static electricity.
    Type: Grant
    Filed: April 2, 1975
    Date of Patent: March 7, 1978
    Assignee: Lester Laboratories, Inc.
    Inventors: John P. Peters, Larry H. McAmish