Synthetic lubricating fluid
CA 1293499 C · Owner: Yoshimura, Narihiko · Inventors: Yoshimura, Narihiko; Tomizawa, Hirotaka; Komatsu, Yasuji
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 at least one ester or its derivative represented by the formula wherein:, n is an integer of 0 to 5 and m is an integer of 0 to 5, with the proviso that the sum of n + m is 1 to 10 inclusive;, R1 is independently selected from hydrogen and C1 to C8 alkyl groups, and, R2 is independently selected from hydrogen and C1 to C3 alkyl groups.
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 December 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 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.