Vehicle body structures and their manufacture
CA 2007749 C · Owner: Kikumoto, Kiyotaka · Inventors: Yamada, Hiroyuki; Hattori, Morishige; Okazaki, Masato
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vehicle body, such as, for example, a railway passenger vehicle body, which includes an external body sheeting formed of opposite sides and a roof and having an internal floor extending between the sides. The sides, above the level of the internal floor and the, roof each include a number of extruded metal plates forming the external body sheeting and integral ribs extending in a longitudinal direction of the vehicle body, are provided on inner faces of the extruded metal plates. The extruded metal plates are welded together at weld lines extending in a longitudinal direction of the vehicle body.
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 January 15, 1990 and granted July 1, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 15, 2012.
- 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.