Patents by Inventor John Cannistra

John Cannistra 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).

  • Filter and valve apparatus
    Patent number: 6579455
    Abstract: A filter canister is disclosed that includes a main body having a top. An inlet port is positioned on the top of the main body and an outlet port also positioned on the top of the main body, offset from the inlet port by a predetermined distance. A filter cartridge is positioned within the main body that has an outlet end that sealingly engages the outlet port. An inlet port identifier is associated with the inlet port, and an outlet port identifier is associated with the outlet port. A valve is also disclosed that operates in connection with the filter canister.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: June 17, 2003
    Assignee: PTI Advanced Filtration
    Inventors: Tom Muzik, John W. Vickers, John Cannistra