Anchor bolt for friable material
CA 2265261 C · Owner: Barthomeuf, Jean-Paul · Inventors: Gauthier, Alain; Barthomeuf, Jean-Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The anchor bolt comprises a generally hollow body (1) with a drilling end (4), a supporting collar (5) at the other end and an external screw thread (6). The collar (5) forms two openings (10 11), diametrically, opposed, for receiving an anti-rotation pin (8 9) removably fixed to the, collar (5) and movable in the opening (10 11). The pins (8, 9) are, intended to anchor both in the collar (5) and in the receiving material in, order to prevent rotation of the bolt.
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 11, 1999 and granted July 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 11, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 11, 2021.
- 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.