Patents to license or sell

Two of my patents have expired for non-payment of maintenance fees and one will expire soon from old age, but I'm proud of them all so I'll mention the expired ones anyway, along with the ones that are still active. Click on a a patent number for a copy of the patent.

Patent 4,684,924 -- Analog/digital Covnerter Using Remainder Signals

Patent 4,763,100 -- Joystick With Additional Degree Of Control

Patent 4,970,512 -- Printed Circuit Rotary Switch With Decoder

Patent 5,128,782 -- Liquid Crystal Display Unit Which Is Back-Lit
With Colored Lights

Patent 5,416,496 -- Ferroelectric Liquid Crystal Display Apparatus
And Method

Patent 5,471,930 -- Rubber Stamp For Use With Different Colored Ink

Patent 6,348,907 -- Display Apparatus With Digital Micromirror Device

Patent 6.012,078 -- Calculation Unit

Patent 6,288,695 -- Method For Driving An Addressable Matrix Display
With Luminescent Pixels, And Display Apparatus
Using The Method

If there are any companies out there that would like to talk about a license
under one of these patents, please telephone me at (202) 326-0222 (in the US).

Patent 6,535,695 -- Method For Using A Spatial Light Modulator