Patents by Inventor Ian Robert Prince

Ian Robert Prince 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).

  • Capacitive key for electronic circuit
    Patent number: 3951250
    Abstract: In a keyboard for an electronic circuit having a striker on each key formed of electronic material which is conductive or carries a conductor and which is moved downwardly towards a fixed conductor assembly to provide capacitive coupling, it is found that electrostatic charges can be generated by operation of a key which give spurious outputs. The present invention provides constructions for reducing the effects of such charges.
    Type: Grant
    Filed: April 8, 1974
    Date of Patent: April 20, 1976
    Assignee: Alphameric Keyboards Limited
    Inventors: Peter Pointon, Ian Robert Prince, Wolfgang Bial