Patents by Inventor Denes Karai

Denes Karai 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).

  • Electromagnetic pointing device using varying overlap of coils and conductive elements
    Patent number: 6248018
    Abstract: A micro-stick in which the movement of the micro-stick is detected inductively. The micro-stick is connected to an actuator element which varies interaction between an electromagnetic element and a number of conductive coils. In one embodiment, the coils are mounted on a printed circuit board mounted beneath the micro-stick. The micro-stick is mounted on a plate having a number of pins extending through the circuit board. On the other side of the circuit board is a flexible metal sheet which is contacted by the pins, and moved away from the coils in a direction in which the micro-stick is tilted. This increased separation of the metal sheet from the coils can then be detected.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: June 19, 2001
    Assignee: Logitech, Inc.
    Inventors: Florian Kehlstadt, Antoine Merminod, Marc Bidiville, René Sommer, Dénes Karaï
  • Integral ball cage for pointing device
    Patent number: 6184870
    Abstract: An electronic mouse with an integral ball cage. The ball cage in one embodiment has integrally formed extensions having openings for enclosed shaft encoders and a pressure roller. The shaft encoders are preferably made of a single piece of plastic. The ball cage is preferably formed as part of the lower housing of the mouse.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: February 6, 2001
    Assignee: Logitech, Inc.
    Inventors: Marc Bidiville, Kieran Devey, Denes Karai
  • Integral ball cage for pointing device
    Patent number: 6175360
    Abstract: An electronic mouse with an integral ball cage. The ball cage in one embodiment has integrally formed extensions having openings for enclosed shaft encoders and a pressure roller. The shaft encoders are preferably made of a single piece of plastic. The ball cage is preferably formed as part of the lower housing of the mouse.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: January 16, 2001
    Assignee: Logitech, Inc.
    Inventors: Marc Bidiville, Kieran Devey, Denes Karai
  • Integral ball cage for pointing device
    Patent number: 5670990
    Abstract: An electronic mouse with an integral ball cage. The ball cage in one embodiment has integrally formed extensions having openings for enclosed shaft encoders and a pressure roller. The shaft encoders are preferably made of a single piece of plastic. The ball cage is preferably formed as part of the lower housing of the mouse.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: September 23, 1997
    Assignee: Logitech Incorporated
    Inventors: Marc Bidiville, Kieran Devey, Denes Karai