Fluid flow control barrier
CA 2495976 C · Owner: Bmp Supplies Inc. · Inventors: Lindemulder, Jim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A barrier primarily intended as a silt dam includes a tubular body with a planar, skirt extending outwardly from one side thereof for anchoring the barrier to the, ground. A helical spring in the body biases the body to an elongated extended, use, position. The body can be collapsed and held in a compact condition for storing or, transporting of the barrier by straps on the ends of the body and releasably interengageable buckles on the straps
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 February 2, 2005 and granted August 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 2, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.