Patents by Inventor Glenn R. Evers

Glenn R. Evers 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).

  • Patent number: 9951196
    Abstract: The present invention relates to polyoxometalate-coated alumina trihydrate dispersants prepared by combining a polyaluminum chloride having certain characteristics with alumina trihydrate particles. Such dispersants are useful for forming cationic alumina trihydrate slurries, which can be mixed with titanium dioxide to produce stable cationic slurry blends useful in paper, paper-board, and paint (coatings) applications. The dispersants are also useful for preparing cationic titanium dioxide slurries.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: April 24, 2018
    Assignee: J.M. Huber Corporation
    Inventor: Glenn R. Evers
  • Publication number: 20140109796
    Abstract: The present invention relates to polyoxometalate-coated alumina trihydrate dispersants prepared by combining a polyaluminum chloride having certain characteristics with alumina trihydrate particles. Such dispersants are useful for forming cationic alumina trihydrate slurries, which can be mixed with titanium dioxide to produce stable cationic slurry blends useful in paper, paper-board, and paint (coatings) applications. The dispersants are also useful for preparing cationic titanium dioxide slurries.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 24, 2014
    Inventor: Glenn R. Evers
  • Patent number: 7452416
    Abstract: A composition containing cationic pigment particles includes titanium dioxide particles to which are bound a first water-soluble cationic polymer and cationic polymer latex particles. In some embodiments the cationic latex is made by treating an anionic latex with a second water-soluble cationic polymer, which may be the same as or different from the first water-soluble cationic polymer. The compositions may be used in papermaking applications, both for internal addition and or coatings.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: November 18, 2008
    Assignee: CPM Industries
    Inventor: Glenn R. Evers
  • Publication number: 20080108740
    Abstract: A composition containing cationic pigment particles includes titanium dioxide particles to which are bound a first water-soluble cationic polymer and cationic polymer latex particles. In some embodiments the cationic latex is made by treating an anionic latex with a second water-soluble cationic polymer, which may be the same as or different from the first water-soluble cationic polymer. The compositions may be used in papermaking applications, both for internal addition and or coatings.
    Type: Application
    Filed: May 17, 2005
    Publication date: May 8, 2008
    Inventor: Glenn R. Evers
  • Patent number: 5300358
    Abstract: Compostible and flushable absorbent structures for sanitary uses for the absorption of body fluids comprising an absorbent degradable fibrous core and a backsheet that is cold-water soluble but water impermeable.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: April 5, 1994
    Assignee: E. I. Du Pont de Nemours and Co.
    Inventor: Glenn R. Evers
  • Patent number: 5296282
    Abstract: Shaped articles having a substrate of a degradable synthetic polymeric material and a discontinuous liquid repellant hydrophobic and/or oleophobic surface layer.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: March 22, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Glenn R. Evers
  • Patent number: 5270076
    Abstract: A process for coating at least one cationically charged ketene dimer on titanium dioxide comprising grinding the titanium dioxide in acidic aqueous media in the presence of a cationically charged ketene dimer.
    Type: Grant
    Filed: April 11, 1991
    Date of Patent: December 14, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Glenn R. Evers
  • Patent number: 5201949
    Abstract: Titanium dioxide pigment prepared by the high pressure (e.g., 10-200 PSIG) oxidation of TiCl.sub.4 vapor is improved with respect to carbon black undertone, specific surface area, and gloss properties by the addition of a nucleant consisting essentially of a cesium substance which is present in the amount of about 8-2,000 parts per million, based on the weight of the TiO.sub.2. The foregoing process is also used wherein the residence time of the reactants in the mixing zone of the reactor is about 1-16 milliseconds.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: April 13, 1993
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Alvin Allen, Glenn R. Evers
  • Patent number: 4891196
    Abstract: The present invention relates to an improved chlorosulfonic acid (CSA) composition useful in making a high clarity sulfated salt of a C.sub.8-22 natural or synthetic predominantly straight chain aliphatic primary alcohol to a process for making the improved CSA composition and to improved CSA composition by the process.The CSA contains less than 1 weight percent sulfuric acid, less than 0.47 weight percent sulfur trioxide, less than 5 parts per million iron and less than 0.5 relative percent pyrosulfuryl chloride.The CSA process involves contacting the hydrogen chloride and sulfur trioxide at the point of reaction with from 0.75 to 1.5 weight percent sulfuric acid based on the stoichiometric rate of CSA produced from the sulfur trioxide with an excess of hydrogen chloride.
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: January 2, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Norman A. Carlson, Glenn R. Evers