Patents by Inventor William J. Ferry

William J. Ferry 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 manufacture of acrylic core/shell polymers
    Patent number: 3985703
    Abstract: A process for the isolation of acrylic core/shell polymers with a high percentage of a rubbery phase by spraydrying in the presence of inert particulate material such as fumed silica in the gaseous drying medium.
    Type: Grant
    Filed: June 24, 1975
    Date of Patent: October 12, 1976
    Assignee: Rohm and Haas Company
    Inventors: William J. Ferry, Donald H. Jones, Roger K. Graham
  • Methacrylate-butadiene-styrene graft polymers and process for their production
    Patent number: 3985704
    Abstract: Multi-stage impact modifier having a high rubber content prepared by a process which includes isolation by spray drying in the presence of fumed silica or another inert particulate material in the gaseous drying medium.
    Type: Grant
    Filed: June 19, 1975
    Date of Patent: October 12, 1976
    Assignee: Rohm and Haas Company
    Inventors: Donald H. Jones, William J. Ferry