Expired Canadian patentCanada
Weeping hose
CA 2087576 C · Owner: Mercedes Textiles Limited · Inventors: Richardson, Robert L.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A weeping hose having an interior coating comprising smaller and larger diameter warp yarn and filler yarn wherein the top portions of the large diameter warp yarn on the interior of the hose is not coated.
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 January 19, 1993 and granted August 5, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 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.
FiledJanuary 19, 1993
GrantedAugust 5, 2003
Term endedJanuary 19, 2013
Patent numberCA 2087576 C
Classification (IPC)F16L58/02 +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.