Patents by Inventor Raymond D. Shaw

Raymond D. Shaw 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).

  • Reusable cartridge for inkjet printer
    Patent number: 7448742
    Abstract: A cartridge for an inkjet printing apparatus. A case of molded plastic includes a downwardly-projecting nose section. An opening in the bottom of the nose section is surrounded by an upstanding stand pipe internal to the cartridge. An insert holds a filter and includes a tube section and an upper flange. The insert is selectively removably fixed to the stand pipe to permit ready filter replacement and thereby facilitate reliable recharging of the cartridge.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: November 11, 2008
    Inventor: Raymond D. Shaw