Method for manufacturing low point petroleum product
CA 1231907 A · Owner: Toa Nenryo Kogyo K.K. · Inventors: Maejima, Tsugio; Sakurada, Satoshi; Tagaya, Nobuaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a method for manufacturing a low pour point petroleum product from distillates of crude oil, and more particularly to a method for economically manufacturing a low pour point petroleum product, such as the insulating oil the, lubricating oil used for various types of freezing devices, or the base oil for such lubricating oil from a paraffin-based crude oil as the starting material without using any special rare crude oil such as naphthene-based crude oil.
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 January 26, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2005.
- 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.