Synthetic lubricating fluid
CA 1289548 C · Owner: Toa Nenryo Kogyo K.K. · Inventors: Tokashiki, Michihide; Yoshimura, Narihiko; Ishii, Tetsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A synthetic lubricating fluid comprising: (i) an ester or its derivative of cyclohexanol and cyclohexanecarboxylic acid represented by the formula, wherein R1, R2, and R3 are independently selected from hydrogen and alkyl groups containing from 1 to 8 carbon atoms;, and (ii) from 1 to 70% by weight of a branched poly-?-olefin.
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.