Rear derailleur for bicycle
CA 2453039 A1 · Owner: Shimano Inc. · Inventors: Hara, Nobukatsu; Shahana, Satoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A derailleur comprises a base member including an engagement member for nonrotatably, engaging the bicycle frame; a threaded member coupled to the base member for engaging a, threaded shaft; a chain guide; and a coupling mechanism coupled between the base member and, the chain guide so that the chain guide moves relative to the base member.
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 December 11, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 11, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2025.
- 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.