Glass fiber, glass fiber-reinforced synthetic resin product and component of an exhaust system for an internal combustion engine
CA 2037760 C · Owner: Honda Giken Kogyo Kabushiki Kaisha · Inventors: Ijima, Toshiro; Adachi, Ryohei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A glass fiber for use in severe environments that included nitrogen acids, sulfuric acids alkalis, and ammonia, wherein said glass fiber contains about 5% to 40% by weight of ZrO2. The glass fiber can be used to make a reinforced synthetic resin product that is excellent in resistances to acids and alkalis, such as a silencer for the exhaust system of an internal combustion engine.
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 March 7, 1991 and granted January 16, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 7, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 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
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.