Patents by Inventor Richard G. Varsanik

Richard G. Varsanik 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).

  • Method of improving the flowability of agro-chemical slurries
    Patent number: 4808215
    Abstract: The instant invention is directed to compositions and a method of improving the flowability of agro-chemical slurries and suspensions, comprising adding to the suspension or slurry being treated an effective amount of: (a) a water soluble polymer; and, optionally, (b) a surfactant, wherein the polyelectrolyte/surfactant weight ratio ranges from 10:1 to 1:10.
    Type: Grant
    Filed: April 3, 1987
    Date of Patent: February 28, 1989
    Assignee: Calgon Corporation
    Inventors: Jasbir S. Gill, Richard G. Varsanik
  • Carboxylic/sulfonic polymer and carboxylic/polyalkylene oxide polymer admixtures for use in iron oxide deposit control
    Patent number: 4680135
    Abstract: The instant invention is directed to a process for inhibiting the formation and deposition of iron oxide in aqueous systems using at least 0.1 ppm of an admixture of:(A) a water-soluble polymer having an intrinsic viscosity of 0.05 to 2.5 dl/g, prepared from:(i) 35 to 90%, by weight, of an unsaturated carboxylic acid, or its salt; and(ii) 10 to 65%, by weight, of an unsaturated sulfonic acid, or its salt; and(B) a water-soluble polymer having an intrinsic viscosity of 0.05 to 2.5 dl/g, prepared from:(i) 35 to 90%, by weight, of an unsaturated carboxylic acid, or its salt; and(ii) 10 to 65%, by weight, of an unsaturated pendant polyalkylene oxide compound.The instant invention is also directed to an admixture of:(A) a water soluble polymer, having an intrinsic viscosity of 0.05 to 2.
    Type: Grant
    Filed: January 15, 1986
    Date of Patent: July 14, 1987
    Assignee: Calgon Corporation
    Inventors: Charles Y. Cha, Richard G. Varsanik
  • Mercaptobenzothiazole and ferrous ion corrosion inhibiting compositions
    Patent number: 4668474
    Abstract: The present invention is directed to a composition and method for inhibiting the corrosion of copper and copper alloy metals in aqueous systems. The composition comprises mercaptobenzothiazole and added ferrous ions in a ratio of 1:1 to 1:10, by weight. The method comprises adding this composition to the aqueous system being treated.
    Type: Grant
    Filed: July 22, 1985
    Date of Patent: May 26, 1987
    Assignee: Calgon Corporation
    Inventors: Jasbir S. Gill, Richard G. Varsanik
  • Carboxylic/sulfonic/polyalkylene oxide polymer for use as scale, corrosion, and iron oxide deposit control
    Patent number: 4618448
    Abstract: The instant invention is directed to a process for inhibiting corrosion and the formation and deposition of scale and iron oxide in aqueous systems, comprising adding to the system at least 0.1 ppm of a water-soluble polymer having an intrinsic viscosity of 0.05 to 2.5 dl/g, prepared from:(a) 35 to 90%, by weight, of an unsaturated carboxylic acid, or its salt;(b) 5 to 40%, by weight of an unsaturated sulfonic acid, or its salt; and(c) 5 to 40%, by weight, of an unsaturated, polyalkylene oxide compound, the total of (a), (b) and (c) being 100% weight of the polymer.
    Type: Grant
    Filed: September 4, 1985
    Date of Patent: October 21, 1986
    Assignee: Calgon Corporation
    Inventors: Charles Y. Cha, Richard G. Varsanik, Shih-Ruey T. Chen
  • Method for settling calcium carbonate
    Patent number: 4596661
    Abstract: The instant invention is directed to a method of settling fine calcium carbonate solids from a suspension comprising water and calcium carbonate, comprising adding to said suspension an effective amount of an admixture comprising: (a) an anionic polyelectrolyte; and (b) an anionic surfactant, wherein said polyelectrolyte/surfactant ratio ranges from 10:1 to 1:5, by weight.
    Type: Grant
    Filed: February 4, 1985
    Date of Patent: June 24, 1986
    Assignee: Calgon Corporation
    Inventors: Jasbir S. Gill, Richard G. Varsanik