Pressure differential material transport and disposal system
CA 2488869 A1 · Owner: Cleaview Window Cleaning, Inc. · Inventors: Grimes, Richard T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pressure differential material transport system to transfer material (3) with an airflow to a sewer system (11). Embodiments of the pressure differential material transport system may be used for residential or industrial applications to dispose of materials (3) to the sewer (11) or to a comminutor (12) to reduce the size of materials (3) prior to disposal.
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 June 5, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 5, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2024.
- 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.