Patents by Inventor John Martin Fleischer

John Martin Fleischer 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).

  • Impact position transducer for ink jet
    Patent number: 4067019
    Abstract: A sensing arrangement for accurately detecting the position of ink jet or similar drop impact thereon. The drop impact occurs on the surface of a poled piezoelectric between two parallel conductors. The charge generated by drop impact is localized, the degree inversely dependent upon the piezoelectric thickness, so that the signal generated in a conductor is dependent upon the distance of the impact location from the conductor. Thus, using transimpedance amplifiers, the difference of the output signals indicates the impact position.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: January 3, 1978
    Assignee: International Business Machines Corporation
    Inventors: John Martin Fleischer, Richard Dwight Holmes