Patents by Inventor Philip S. Plumbo

Philip S. Plumbo 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).

  • Mixing system for use with concentrated liquids
    Patent number: 4941596
    Abstract: Mixing concentrates requires the precise dispensing of predetermined amounts of concentrate into predetermined amounts of liquid and such mixes can be obtained by the use of a system having two positive displacement pumps, one for pumping larger volumes with each operation than the second pump and a pressure regulator to maintain a predetermined pressure on the solvent carrier fluid for the mixture.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: July 17, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John L. Marty, Philip S. Plumbo