Composite anchor
CA 2102826 C · Owner: Haug, Willi · Inventors: Haug, Willi; Fischer, Artur
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite anchor has an anchoring rod and a crushable cartridge filled with two components of a hardenable bonding agent which include a mineral mortar component and a water component separated from one another by crushable separating means. When the cartridge with the separating means is crushed by the anchoring rods the components are mixed by the anchoring rod in order to fix the anchoring rod in a drilled hole. The water component has a thixotropic agent which is paste-like unless it is subjected to shear forces.
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 November 10, 1993 and granted July 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2015.
- 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.