Patents by Inventor Mark Sorensen Dahlstrom

Mark Sorensen Dahlstrom 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).

  • Charge electrode assembly for ink jet printer
    Patent number: 4101906
    Abstract: A charge electrode assembly useful in an ink jet printer comprises a nonconductive supporting structure in which a multiplicity of grooves are formed. Each groove has a conductive layer of a corrosion-resistant noble metal, preferably platinum or rhodium, thereby forming an electrode. An electric power supply is coupled to the electrodes and energizes selected ones of the electrodes when propelled ink droplets traverse the electrode area.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: July 18, 1978
    Assignee: International Business Machines Corporation
    Inventors: Mark Sorensen Dahlstrom, Paul Simon