Patents by Inventor A. P. Davis

A. P. Davis 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 of increasing the yield in producing SDVB-based copolymer in preparing standard turbidity/nephelometry test samples
    Publication number: 20090264595
    Abstract: A method of improving the yield in producing a unique styrene-divinylbenzene copolymer for use in an improved more highly diluted suspension for preparing standard turbidity test equipment calibration samples of very low turbidity levels in the measurement of turbidity in water.
    Type: Application
    Filed: April 21, 2008
    Publication date: October 22, 2009
    Applicant: Patterson Legacy, Inc.
    Inventors: James A. Patterson, A. P. Davis
  • Triangular refillable crayon dispenser for wax crayon
    Patent number: 5477983
    Abstract: A dispenser of crayons or the like comprising a container having a longitudinally extending passageway there through. The container has inner and outer walls. The container also has an upper open end and a lower open end for dispensing the crayon or the like. The dispenser further has urging means for moving a crayon in a direction outwardly through the container and the lower open end. In addition, a crayon cartridge is provided with a longitudinal bore there through.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: December 26, 1995
    Inventor: Carolyn A. P. Davis