Patents by Inventor John Edward Masters

John Edward Masters 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).

  • Process for making powder coatings
    Patent number: 4049744
    Abstract: Powder coating compositions are prepared by first forming a dispersion in water of a complex polyhydroxy polyether resin using as the dispersant an inorganic or organic base salt of a polymeric carboxylic acid having an acid value before salting of at least 50, acidifying the dispersion and then isolating and drying the precipitated fine particle size resin. Such resins in this finely divided form find particular utility as powder coatings for metallic articles.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: September 20, 1977
    Assignee: Celanese Polymer Specialties Company
    Inventor: John Edward Masters