Patents by Inventor Guodong Yuan

Guodong Yuan 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).

  • Fine and Uniform Methyl Vinyl Ether-Maleic Acid Inorganic Salt Copolymers and Their Use in Oral Care and Pharmaceutical Applications
    Publication number: 20190071521
    Abstract: The invention relates to fine and uniform copolymer powders of partial mixed metal salts of lower alkyl vinyl ether-maleic acid copolymers having a defined particle size distribution. In particular; it relates to powders that are suitably used in the areas of oral care and pharmaceuticals and to methods for preparing the powders. Provided is a composition of powders of partial mixed metal salts of lower alkyl vinyl ether-maleic acid copolymers having: (i) a Dv50 of less than or equal to 25 microns; a Dv90 of less than or equal to 50 microns; and (ii) a particle uniformity reflected by a Dv90/Dv10 ratio of less than or equal to 10.
    Type: Application
    Filed: March 3, 2016
    Publication date: March 7, 2019
    Inventors: Herbert Wilhelm Ulmer, Jianqiang Wang, Long Wang, Guodong Yuan, Jianxin Sun, Xudong Sun