Olefin oligomer synlube process
CA 1321606 C · Owner: Ethyl Corporation · Inventors: Lin, Ronny Wen-Long; Lynch, Matthew J.; Nelson, Marshall B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An a-olefin oligomer suitable for use in making a medium viscosity synlube and having a tetramer/trimer ratio greater than 1.0 is made by feeding a C8-12 .alpha.-olefin to C8-12 .alpha.-olefin trimer at a controlled rate over an extended period at 15-40°C in contact with BF3 and a promoter (e.g. water, alcohol).
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 August 24, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 24, 2010.
- 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.