Strength-enhancing apparatus for metal part
CA 2278893 C · Owner: Watanabe, Shigeru · Inventors: Ito, Yutaka; Ichihashi, Satoru; Watanabe, Shigeru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a strength-enhancing apparatus for a metal part comprising a recovery mechanism for sucking powder flow dust generated from glass beads crushed on a surface of a gear in a chamber to recover it together with drainage wherein the recovery mechanism includes a liquid-spouting means arranged on a ceiling in the chamber for effecting, showering for the whole interior of the chamber. Accordingly it is possible to reliably recover the mist containing the powder flow dust floating in the chamber and, it is possible to reliably avoid adhesion and accumulation of the powder flow dust.
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 July 26, 1999 and granted August 5, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 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.