Seed film compositions
CA 2113643 C · Owner: Sisken, Harold R. · Inventors: Akhtar, Ikbal A.; Sisken, Harold R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Film-forming compositions for coating objects such as seeds, are , characterized by a cellulosic polymer and a polyalkylene, oxide polymer. The compositions may also include a glycol microbial agents, gelling agents, surfactants and antifoamants in an, aqueous medium. In a process for enveloping solid forms such as seeds with the above composition, the composition may be mixed with seed protectant chemicals, such as fungicides prior to its , application to seeds in seed treating equipment.
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 July 16, 1992 and granted April 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2014.
- 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.