Patents by Inventor Leon Edward Newman

Leon Edward Newman 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: 5874498
    Abstract: This invention relates to improved vinyl acetate-ethylene emulsions for use in formulating high performance paints without the need for coalescing solvents. These latexes are based on copolymers of vinyl acetate and ethylene optionally containing a comonomer such as an alkyl acrylate or methacrylate. Paints formulated from these latexes, without coalescing solvents, are characterized as having substantially no insolubles, the resin particles in the emulsion are characterized as having a particle size of from 0.2 to 0.35 microns measured as weight average by capillary hydrodynamic fractionation. In other words, the copolymer particles are characterized in that a small percentage, up to about 5% of the total number of particles in the latex, have an average size greater than 0.35 microns, and a small percentage have a size smaller than about 0.2 microns. Further the resin particles are essentially monodisperse.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: February 23, 1999
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Christian Leonard Daniels, Leon Edward Newman