Patents by Inventor Carolyn K. Attenborough

Carolyn K. Attenborough 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: 5283129
    Abstract: A light weight coated paper is provided by a process wherein paper stock having a weight ranging from about 22 to 26 pounds per ream is coated with from about 4 to 8 pounds per ream of an aqueous coating formulation comprising:a) a pigment composition comprising:i) from about 60 to 80 parts by weight of delaminated clay;ii) from about 15 to 30 parts by weight of calcined clay; andiii) from about 5 to 15 parts by weight of a whitening pigment;b) from about 15 to 30 parts by weight of a starch binder;c) from about 3 to 7 parts by weight of a starch cross-linking agent per 100 parts by weight starch;d) from about 0.5 to 1.5 parts of a lubricant per 100 parts by weight pigment;e) water in an amount sufficient to provide a coating formulation having from about 45 to 50% by weight solids; andf) sufficient basic buffer to raise the pH to about 8 to 8.5.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: February 1, 1994
    Assignee: Champion International Corporation
    Inventors: Frederick J. Renk, Carolyn K. Attenborough, Frederick C. Oettinger, Michael S. Handzel