Patents by Inventor C. Arlyn Rice

C. Arlyn Rice 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 for forming aggregated kaolin pigment
    Patent number: 5203918
    Abstract: A method for forming an aggregated kaolin clay pigment, comprising: preparing an aqueous 6-30% solids slurry of a fine particle size feed kaolin; intermixing with said slurry from about 10 to 20% of alum, by weight of the dry kaolin; adding to the mix of step (b) from about 15 to 30% of sodium silicate, by weight of the dry kaolin; mixing the reactants of step (c); and filtering and drying the slurry to recover aggregates of adherent platelets.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: April 20, 1993
    Assignee: ECC America Inc.
    Inventor: C. Arlyn Rice
  • Method for forming aggregated kaolin pigment
    Patent number: 5151124
    Abstract: A method for forming a hydrothermally aggregated kaolin clay pigment, comprising: preparing an aqueous slurry of a particulate kaolin clay, sodium silicate, and finely divided calcium carbonate, having a total solids concentration of from about 10 to 20% by weight; the non-aqueous components including 60 to 80 parts per hundred by weight of said kaolin and from 10 to 20 pph by weight each of said sodium silicate and said calcium carbonate; and hydrothermally treating said slurry in a closed system to form aggregates of adherent kaolin platelets.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: September 29, 1992
    Assignee: ECC America Inc.
    Inventor: C. Arlyn Rice
  • Silicon nitride coated clays and method of preparation
    Patent number: 4810580
    Abstract: A modified clay mineral, such as a kaolin clay, is disclosed in which nitridation of the silicon atoms of the clay has been effected. This may be accomplished by reaction of the clay with NH.sub.3 at temperatures above 1000.degree. C.
    Type: Grant
    Filed: October 29, 1987
    Date of Patent: March 7, 1989
    Assignee: E.C.C. America Inc.
    Inventor: C. Arlyn Rice
  • Surface modified pigments and methods for producing same and elastomers containing same
    Patent number: 4810578
    Abstract: The surface of a hydrous clay such as kaolin is modified by treatment with an alkyl dimethoxy mercaptopropylsilane and the modified clay is used as a filler in elastomers to give improved reinforcement.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: March 7, 1989
    Assignee: E.C.C. America Inc.
    Inventors: Paul I. Prescott, C. Arlyn Rice