Silicon nitride sintered product
CA 1314293 C · Owner: Urashima, Kazuhiro · Inventors: Urashima, Kazuhiro; Nakanishi, Kenji; Tajima, Yo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A silicon nitride sintered product comprises in % by weight, 1 to 10% Mg, calculated as MgO 1 to 10%, Zr, calculated as ZrO2, 0.1 to 2.0% of at least one of A?, calculated as A?2O3, Li, calculated as Li2O and Na, calculated as Na O, and the remainder being Si3N4 and unavoidable impurities.
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
- Granted March 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 9, 2010.
- 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.