Keyboard Patents

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A gallery of patents that describe technologies or illustrate designs relating to IBM and family keyboards, typewriters and keypunches. This includes keyswitch/actuator designs, ornamental designs (overall appearance), integrated pointing devices such as TrackPoints, and host systems such as PCs, laptops, terminals, consoles and electronic typewriters. All illustrations provided are from the patents themselves, which are believed to be within the public domain. A total of 112 patents have been recorded. The patent list is currently filtered to 1 patent(s).

U.S. Utility Patent 6,642,857 (US6642857B1)

Applied 19 Jan 2001

Published 4 Nov 2003

Expired 16 May 2022

More info

Name	Capacitive pointing stick
Inventors	Richard Schediwy, Mark Huie, Charles Cook
Assignees	Synaptics, Esoft
Description	An invention for a keyboard pointing stick using force-sensing capacitor technology, said to be less susceptible to noise and reduces component count over a force-sensing resistor-based stick. This was implemented as the Synaptics TouchStyk, which was notably used on IBM and Lenovo SK-8835, SK-8840 & SK-8845 family keyboards.