Injection mold having hot-runner mold
CA 2433249 A1 · Owner: Ishikawa, Hiroshi · Inventors: Takeuchi, Setsuyuki; Ishikawa, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an injection mold having a hot-runner mold a tip having, low thermal conductivity is provided in the end face of a nozzle to enable the nozzle to directly nozzle-touch a cavity mold without a heat insulating sheet. A nozzle 22 of a needle-valve-nozzle 21 of the hot-runner mold 2 arranged on the bottom of a cavity mold 1 is constructed of a nozzle body 22a having an opening 22b in its end face and a tip 4 that is slidably fitted in the opening 22b to protrude its flat end face from the end face of the nozzle body 22a. The tip 4 is made of metal having lower thermal conductivity than the nozzle body 22a, whereby the nozzle 22 can be constantly nozzle-touched to the cavity mold 1 without …
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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 25, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 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.