Precious metal article, method for manufacturing same, moldable mixture for use in manufacture of same and method for producing moldable mixture
CA 2042845 C · Owner: Morikawa, Masaki · Inventors: Miyakawa, Masaki; Morikawa, Masaki; Kohno, Tohru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a precious metal article which is formed of a solid-phase sintered product of a precious metal powder. For manufacturing the precious metal article a moldable mixture, which contains a precious metal powder and a binder removable by sintering is shaped into a prescribed molded object and the, molded object is then subjected to sintering. The moldable mixture is produced by preparing a precious metal powder preparing, a jellylike cellulose binder by blending a cellulose with water and leaving for a prescribed period of time and blending, the precious metal powder and the jellylike cellulose binder together. The most preferable moldable mixture contains 50 to 90 % weight of …
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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 May 17, 1991 and granted October 5, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 17, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 2013.
- 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
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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.