Metalworking lubricating oil
CA 1330790 C · Owner: Exxon Research & Engineering Company · Inventors: Endo, Takamitsu; Hoshino, Tetsuro; Kawasaki, Sohei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a metalworking lubricating oil having improved lubricity due to the addition of certain tri-esters of trimellitic acid to said oil. The oil thus formed is particularly well suited as roll oil lubricant in the cold rolling of stainless sheets and foil.
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 July 19, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 19, 2011.
- 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.