Control signal spreader
CA 2036175 C · Owner: Weckenbrock, Hermann J. · Inventors: Ko, Jung-Wan; Weckenbrock, Hermann J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for spreading a control signal comprised of widening circuits for extending the control signal horizontally and vertically a line signal spreading, circuit for generating a ramp of increasing values during a given interval at the beginning of each extended control signal maintaining the maximum value of, the ramp for the remainder of the extended control signals and generating a ramp of decreasing values at the end of each extended control signal and also including a circuit for combining the signal values at corresponding points along a plurality of lines as the lines are scanned.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 12, 1991 and granted August 27, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.