Vacuum toilet system
CA 2300269 A1 · Owner: Stroby, Lennart · Inventors: Stroby, Lennart; Nilsson, Ake
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vacuum toilet system for railway cars and other vehicle units comprising at least one toilet placed within a heated room and connected through a, discharge valve to a sewer pipe and a collecting container which may be put , under, vacuum for emptying a selected toilet. In order to achieve a compact solution with a, reliable function, the collecting container comprises an elongated and substantially, vertically arranged receptacle that is positioned in close relation to the room so that it, is heated by the controlled temperature of said room.
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 March 7, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 7, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 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.