Patents by Inventor Sherman H. M. Tsao

Sherman H. M. Tsao 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).

  • Patent number: 4811239
    Abstract: An improved image producing apparatus relating to the display of images including text, line graphics, continuous tone photographs, and halftone pictorials is disclosed. The apparatus includes, for example, a CCD scanner for scanning a scene for producing a data image of a scene for a processor.
    Type: Grant
    Filed: February 25, 1987
    Date of Patent: March 7, 1989
    Inventor: Sherman H. M. Tsao
  • Patent number: 3960324
    Abstract: Method and apparatus for generating a plurality of parallel droplet streams in a coating apparatus, such as an ink jet printing device, in which the streams break into droplets from fluid filaments at a uniform distance from issuing orifices. The streams issue from a pressurized chamber in which an elastic bending member is repetitively flexed by a plurality of parallel bending elements operated simultaneously to produce uniform bending throughout the effective length of said member to produce successive pressure disturbances within the supply chamber and induce varicosities of the same size and frequency in the issuing streams. This arrangement is able to enhance printing quality in an ink jet recorder by permitting maintenance of proper phase relationship between droplet formation and charging voltage.
    Type: Grant
    Filed: May 29, 1975
    Date of Patent: June 1, 1976
    Assignee: International Business Machines Corporation
    Inventors: Donald E. Titus, Sherman H. M. Tsao