Malfunction diagnosis system and method for on-vehicle electronic control units
CA 2198501 C · Owner: Ishii, Satoshi · Inventors: Ishii, Satoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A diagnosis system for diagnosing malfunctions of on-vehicle electronic control units (ECU) includes a plurality of ECUs and a diagnostic tester. The ECUs are connected to one another, thereby forming a communications network. The ECUs store a data related to malfunctions. A diagnostic tester is connected to an engine ECU for reading the data stored in the ECUs. The tester transmits an initialization signal at a low speed to the ECU when starting communicating with one of the ECUs. The ECU selects a transmission rate between the ECU and the tester based on the initialization signal.
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 25, 1997 and granted April 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 25, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 2019.
- 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.