Method of reclaiming waste plastic material and a compound including waste plastic material
CA 2195333 C · Owner: Johansson, Jan-Erik · Inventors: Paatero, Jaakko; Johansson, Jan-Erik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for treating waste plastic material so as to make possible its utilisation, for example, as a binder component in road surfacing materials or as fuel. The waste plastic material is made at least partly fluid by mixing it with a solvent. The solvent consists mainly of animal and/or vegetable fats; waste fats produced in refining animal and/or vegetable fats or other products; synthetic fatty acids or fatty acid compositions; or mixtures of the above. The objet of the invention also includes a binder composition and fuel containing waste plastic material.
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, 1995 and granted October 21, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 3, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2017.
- 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.