Method for removing hydrocarbon products from the surface of an aqueous medium
CA 2073074 C · Owner: Codiglia, Stelio · Inventors: Codiglia, Stelio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method for removing hydrocarbon products from the surface of an aqueous medium, comprising the steps of: a) absorbing the hydrocarbon products using the steps consisting of:, i) bringing the hydrocarbon products into contact with a solid, sub-divided ethylene/alpha olefin copolymer elastomeric material or a solid, sub-divided ethylene/alpha olefin/diene terpolymer elastomeric material and ii) allowing the elastomeric material to absorb the hydrocarbon products and form a layer of a homogeneous jelly-like mass on the surface of the aqueous medium the, jelly-like mass consisting of the elastomeric and b) mechanically removing the jelly-like mass from the surface of the aqueous medium.
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 July 3, 1992 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2014.
- 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.