Paste form heat-blowing injection composition and method for injecting and soundproofing closed section of automobile body member
CA 2526512 C · Owner: Gotou, Kiyoyuki · Inventors: Ukai, Masaki; Gotou, Kiyoyuki; Sugiura, Yutaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to an automatic injecting type paste form heat-blowing injection composition comprising a partially crosslinked rubber an unvulcanized , rubber, a crosslinking agent a plasticizer, a thermoplastic , resin an epoxy resin and a latent curing agent thereof and , a blowing agent. This composition can be used in an injecting and soundproofing method comprising forming an insulation wall by heating and foaming of an injection composition in a closed section of an automobile body part having a closed section frame which is produced by press molding in a body welding step of an automobile manufacturing line. It has good anti-stringy properties and suffers …
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 June 2, 2004 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 2, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 2, 2026.
- 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.