Patents by Inventor Daniel John Panfil

Daniel John Panfil 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).

  • Kaolin pigments, their preparation and use
    Patent number: 6610137
    Abstract: A pigment product suitable for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin produced from a naturally platy kaolin clay having a particle size distribution such that about 50% to 60% by weight of the particles have an esd less than 2 &mgr;m and less than 25% by weight of the particles have an esd less than 0.25 &mgr;m and a shape factor of at least 15. In processing, the crude kaolin is ground to a shape factor greater than 50 to produce even greater “platy” clay. The pigment product has a particle size distribution such that at least 80% by weight of the particles have an esd less than 2 &mgr;m and greater than 12% and less than 35% by weight of the particles have an esd less than 0.25 &mgr;m and whose surface area is greater than 12 m2/g when measured by the BET method.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: August 26, 2003
    Assignee: Imerys Pigments, Inc.
    Inventors: Christopher R. L. Golley, Daniel John Panfil, Harry Vincent Brown, Jr., John Claude Husband
  • Kaolin pigments, their preparation and use
    Publication number: 20030094120
    Abstract: A pigment product suitable for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin produced from a naturally platy kaolin clay having a particle size distribution such that about 50% to 60% by weight of the particles have an esd less than 2 &mgr;m and less than 25% by weight of the particles have an esd less than 0.25 &mgr;m and a shape factor of at least 15. In processing, the crude kaolin is ground to a shape factor greater than 50 to produce even greater “platy” clay. The pigment product has a particle size distribution such that at least 80% by weight of the particles have an esd less than 2 &mgr;m and greater than 12% and less than 35% by weight of the particles have an esd less than 0.25 &mgr;m and whose surface area is greater than 12 m2/g when measured by the BET method.
    Type: Application
    Filed: August 26, 2002
    Publication date: May 22, 2003
    Applicant: IMERYS PIGMENTS, INC.
    Inventors: Christopher R.L. Golley, Daniel John Panfil, Harry Vincent Brown, John Claude Husband
  • Kaolin pigments, their preparation and use
    Patent number: 6537363
    Abstract: A pigment product suitable for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin produced from a naturally platy kaolin clay having a particle size distribution such that about 50% to 60% by weight of the particles have an esd less than 2 &mgr;m and less than 25% by weight of the particles have an esd less than 0.25 &mgr;m and a shape factor of at least 15. This platy clay can be blended with b-fraction clay component. In processing, the crude kaolin is ground to a shape factor greater than 50 to produce even greater “platy” clay. The pigment product has a particle size distribution such that at least 80% by weight of the particles have an esd less than 2 &mgr;m and greater than 12% and less than 35% by weight of the particles have an esd less than 0.25 &mgr;m and whose surface area is greater than 12 m2/g when measured by the BET method.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: March 25, 2003
    Assignee: Imerys Pigments, Inc.
    Inventors: Christopher R. L. Golley, Daniel John Panfil, Harry Vincent Brown, Jr., John Claude Husband