Sleeve for toilet flanges and drains
CA 2429407 C · Owner: Beaumont, Robert · Inventors: Beaumont, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A protective sleeve system for use by plumbers during installation of riser pipes in buildings surrounds a pipe and maintains a space around the pipe. A sleeve surrounds the pipe such that a space is defined between the pipe and the sleeve and a plurality of spacers disposed between the sleeve and the pipe maintain the space between the pipe and the sleeve. The plurality of spacers are separate from the sleeve. An annular cover ring covers the annular space. In use the protective sleeve system is installed prior to pouring the concrete floor. After pouring and setting of the concrete floor the cover ring is removed, followed by the removal of the spacers. The sleeve is then cut to floor …
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 May 23, 2003 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 2025.
- 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.