Controlled release system for insect attractant
CA 2017516 C · Owner: Anderson, Douglas G. · Inventors: Anderson, Douglas G.; Lokkesmoe, Keith D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A controlled release system for volatile liquid insect attractant compositions can be formed from a container (12) having an aperture (18) closed by a membrane (20), wherein the dimensions of the container (12) the, dimensions of the aperture (18), the nature of the membrane (20), the liquid (24) level, and vapor space (26) within the container (12) are conformed to produce an effective attractant release rate.
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 24, 1990 and granted September 24, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 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.
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.