Metal powder
CA 2304030 C · Owner: Ito, Takayuki · Inventors: Takatori, Hideo; Ito, Takayuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Metal powder which can prevent delamination by delivering an excellent sintering behaviour during a production process of a monolithic ceramic capacitor and an excellent dispersibility when a conductive paste is formed. Metal powder produced by bringing a metal chloride gas into contact with a reducing gas in a reducing reaction temperature zone is surface-treated by a nonionic surfactant in a wet of dry process to obtain final metal powder.
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 13, 1999 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 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.