Patents by Inventor John C. Nease

John C. Nease 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).

  • Clay pigment for coating paper
    Patent number: 4241142
    Abstract: A novel clay pigment, the manufacture thereof and the use of the pigment in the production of dull and matte-finish coated printing papers. The novel clay pigment comprises a mixture of a coarse-size fraction of naturally-occurring kaolin clay containing a substantial proportion of kaolinite booklets in the particle size range of 2 to 5 .mu.m equivalent spherical diameter (e.s.d.) and mechanically delaminated kaolin platelets in the particle size range of 2 to 10 .mu.m e.s.d.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: December 23, 1980
    Assignee: Engelhard Minerals & Chemicals Corporation
    Inventors: Adam F. Kaliski, Richard R. Berube, John C. Nease