Expired Canadian patentCanada
High speed crosslapper
CA 2016820 C · Owner: Freund, Kenneth Stephen · Inventors: Freund, Kenneth Stephen
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 crosslapper is disclosed utilizing at least one foraminous transporting belt to permit rapid escape of entrained air during fast operation of wide-bed machinery.
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 May 15, 1990 and granted April 17, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 15, 1990
GrantedApril 17, 2001
Term endedMay 15, 2010
Patent numberCA 2016820 C
Classification (IPC)D01G15/44 +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.