Patents by Inventor Onshiro Sato

Onshiro Sato 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).

  • Apparatus for cleaning a nozzle of an ink jet printer
    Patent number: 4814794
    Abstract: A disposable cartridge is adapted for supplying cleaning liquid and collecting the used or waste liquid to clean a nozzle of an ink jet printer. The cartridge includes a case, a flexible, sealed bag filled with cleaning liquid, and an absorbent adapted for absorbing the waste liquid, both the bag and absorbent disposed in the case. The cleaning liquid is supplied from the bag to the ink jet nozzle to clean it, so that the amount of cleaning liquid in the bag is gradually decreased. On the other hand, the waste liquid is collected and returned to the absorbent and absorbed thereby, so that the volume of the absorbent is gradually increased.
    Type: Grant
    Filed: September 29, 1987
    Date of Patent: March 21, 1989
    Assignee: Dai Nippon Ink and Chemicals Inc.
    Inventor: Onshiro Sato