Door beam of aluminum alloy
CA 2266843 C · Owner: Hirano, Masakazu · Inventors: Takeuchi, Hisashi; Yamashita, Hiroyuki; Hirano, Masakazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A door beam to obtain a maximal load and an energy absorption required in no need of increase in weight without occurrence of rupture thereof and to have deformation of a cross-section effected in a stable manner even when a length of the door beam is shortened wherein a cross-section that a compression-side flange and a tension-side flange are connected parallel to each other by at least one web in a section perpendicular to a length direction and central lines of the compression-side flange and the tension-side flange are shifted from each other.
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 March 24, 1999 and granted June 10, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 24, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 2021.
- 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.