Waste recovery and treatment system without generating dioxide
CA 2307923 A1 · Owner: Chang, Song-I · Inventors: Chang, Song-I
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A waste recovery and treatment system without generating dioxide comprises a heat source device a heat exchanger, a, temperature adjuster a heating equipment, and an exhaust-, treating device. In this system the heat source device provides a, heat source to be exchanged in the heat exchanger for output of hot airflow, which is adjusted in the temperature adjuster for providing a stable airflow at an optimum temperature to the heating equipment to heat waste inside without incurring insufficient heat or overheat so that the waste (aluminum extrusion with plastic accessory for example) can be detached easily without generating poisonous dioxide for saving operation cost, enhancing …
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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 May 9, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 9, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 2022.
- 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.