Hot-rolled concrete reinforcing bar, in particular reinforcing ribbed bar and method of making the bar
CA 1306118 C · Owner: Arbed S.A. · Inventors: Jungwirth, Dieter; Russwurm, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a hot-rolled concrete reinforcing bar of which the ribs are arranged along a helical line and form portions of a thread for screwing on an anchoring or connecting body provided with a counter thread a rib form and rib arrangement improved as regards the dynamic stressability of the thread connection is proposed. A method of manufacture of the bar is also disclosed,
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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
- Granted August 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 2009.
- 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.