Traction fluid
CA 1289551 C · Owner: Yoshimura, Narihiko · Inventors: Yoshimura, Narihiko; Komatsu, Yasuji; Tomizawa, Hirotaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A traction fluid comprising: (i) an ester or its derivative represented by the formula:, wherein A' is an ester linkage of -COO- or -OOCn is an, integer of from 1 to 14, R1 is selected from hydrogen and C1 to C8 alkyl radicals, and R2 is independently selected from hydrogen and C1 to C3 alkyl radicals; and (ii) from 0.1 to 95% by weight of a polymer selected from hydrocarbonic polymers and polyesters.
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 September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2008.
- 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.