Patents by Inventor Jun Tanzawa

Jun Tanzawa 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).

  • Duplex recording paper transport control apparatus
    Patent number: 5003355
    Abstract: The sheet transport control apparatus for controlling transport of a sheet is used in a duplex unit for a laser printer, the duplex unit having a transport system and a switchback system.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: March 26, 1991
    Assignee: Ricoh Company, Ltd.
    Inventor: Jun Tanzawa