Mobile self-contained system for on-site recovery of solvents
CA 2022232 C · Owner: Environmental Technology Group Corp. · Inventors: Silinski, Thomas John; Walz, Robert Alan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for on-site recovery of reusable industrial waste components, such as solvents, from a liquid waste stream includes a trailer that is internally partitioned to separate system components through which the waste stream passes in a first partitioned section of the trailer from support and control components in the second trailer section. Input waste is fed into a horizontal thin-film evaporator within the first trailer section, while steam is fed in a closed loop through the evaporator from the second section of the trailer for evaporating volatile solvents in the waste stream, and thereby separating the volatile solvents from non-volatile liquid and solid components of the waste …
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 30, 1990 and granted December 17, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 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.