Patents by Inventor Mitchell Berkson

Mitchell Berkson 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).

  • Electronic stylus with writing feel
    Patent number: 5627348
    Abstract: A non-marking, writing system simulates a physical writing system which has characteristic ranges of writing resistance, sound, resilience and thermal conductivity. The non-marking writing system includes a non-marking writing instrument having an elongated shank with opposite ends. A non-marking tip is connected to one end of the shank for engagement against and movement across a writing surface. The writing surface onto and across which the tip is moved for non-marking writing, creates an actual writing resistance. The tip is structured and made of selected material and the writing surface is made of selected material so that the actual writing resistance falls within the characteristic range of writing resistance for the physical writing system.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: May 6, 1997
    Assignee: A.T. Cross Company
    Inventors: Mitchell Berkson, David Arthur
  • Stylus tip
    Patent number: D416043
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: November 2, 1999
    Assignee: A. T. Cross Company
    Inventors: David Arthur, Mitchell Berkson