Branched polyolefin polymers as additives in fuel and lubricating oil compositions
CA 2207891 A1 · Owner: Bostoen, Claude Leo · Inventors: Janssen, Koen Jan Gerarda; Bostoen, Claude Leo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A branched polyolefin additive for use in fuel and/or lubricating oil in the form of a comb, star, nanogel and structural combinations thereof in which a plurity of polyolefin arms are attached to a backbone having repeating units containing aliphatic groups, aromatic groups, heteroatom-containing groups and combinations thereof to, provide a branched polymeric additive in which the properties of the additive can be conveniently tailored to a single or multi-functional performance criteria of a fuel and/or lubricating oil composition.
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
- Filed June 17, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2019.
- 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.