High-speed synchronous counter circuitry
CA 2175614 C · Owner: Raytheon Company · Inventors: Oda, Dwight N.; Chinn, Gregson D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Digital counter register stages RCRG(N) are constructed as twoto-one mux registers, each employing a multiplexer stage (113) having first second, and third inputs (S0, I0, I1) and an output (116) connected to the switching signal input (D) of a D-type flip-flop (15) whose Q output comprises, a first input (I1) to the multiplexer stage (113). An inverter buffer (19) is associated with each register stage (RCRG(N)) and has an input connected to the output (Q) of said D-type flip-flop (115) and an output connected to the second input (I0) of the multiplexer stage (RCRG(N)) and fed forward to a NOR gate (21) associated with each subsequent register stage (RCRG(N)).
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 May 2, 1996 and granted October 31, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 2, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 2, 2018.
- 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.