Patents by Inventor Douglas James Boring

Douglas James Boring 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).

  • Vacuum loader system
    Patent number: 3954303
    Abstract: A vacuum loader system and more particularly an improved means for metering a predetermined quantity of color concentrates and/or pelletized additives to a virgin or virgin-regrind mixture in a vacuum loader system of a type utilized in transporting materials used in plastic molding processes from the respective storage bins thereof to a plastic processing machine.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: May 4, 1976
    Assignee: Conair, Inc.
    Inventor: Douglas James Boring