Rubber hose
CA 1202579 A · Owner: Toyota Jidosha Kabushiki Kaisha · Inventors: Kawazoe, Takashi; Okumoto, Tadaoki; Yamada, Tetsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An oil-resistant rubber hose having internal and external layers made of vulcanizate of a rubber compound of partially hydrogenated unsaturated nitrile-conjugated diene copolymer in which at least 50% of the conjugated diene units is hydrogenated, or made of vulcanizate of a rubber compound composed of said copolymer and polyvinyl chloride resin and/or liquid NBR. This rubber hose is superior in resistance to deteriorated gasoline and low temperature, and is suitable for the automotive fuel line of the type that the fuel pump is built into the fuel tank and both the inside and outside of the fuel hose is exposed to gasoline.
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 April 1, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 1, 2003.
- 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.