Apparatus for converting synthetic resin into oil
CA 2032895 A1 · Owner: Yamaguchi, Takuo · Inventors: Yamaguchi, Takuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for converting synthetic resin into oil according to the present invention thermally decomposes the synthetic resin by heating the same in a heat vessel, thereby producing oil. The apparatus comprises the heat vessel and a heating furnace. The synthetic resin fed into the heat vessel stirred. At least the lower part of the heat; vessel is disposed in the heating furnace. By providing a radiating fin on the outer surface of the upper part of the heat vessel disposed outside the heating furnace or providing a heat-insulator on the outer surface of the upper part of the heat vessel disposed in the heating furnace the temperature rise in the, upper part of the heat vessel limited.
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 December 20, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2012.
- 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.