Expired Canadian patentCanada
Method and prefabricated parts for producing pipe branch pieces
CA 2183397 C · Owner: Bender, Helmuth · Inventors: Bender, Helmuth
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
One or a plurality of valve-operated branch pieces can be attached to any point of any pipe. To this end two opposite openings, (16, 18) are made in the pipe (10) and a blanch valve body is clamped, about the pipe in bracket-like manner about the prepared site.
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 December 15, 1995 and granted December 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 15, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 15, 1995
GrantedDecember 12, 2000
Term endedDecember 15, 2015
Patent numberCA 2183397 C
Classification (IPC)F16L41/06 +2 more
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.