System and devices for collecting and treating waste water from engine washing
CA 2763088 C · Owner: Pratt & Whitney Maintenance Services, Inc. · Inventors: Hjerpe, Carl-Johan; Asplund, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to the field of washing engines particularly using washing liquids such as water and detergent or water only and more specifically to systems, apparatus and a mobile cart comprising such a system for collecting and treating the waste water from engine washing operations. The system comprises a collecting device for collecting waste liquid during a washing operation of the engine and a treatment device for treating waste liquid collected during said washing operation. According to an embodiment the system is arranged on a mobile cart (50) for serving an engine (1) during a washing operation of the engine (1) comprising a chassis provided with wheels. The mobile …
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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 June 14, 2004 and granted August 5, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 2026.
- 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.