Water soluble package
CA 2121799 A1 · Owner: Shue, James · Inventors: Mccarthy, William; Shue, James; Gouge, Samuel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A package containing a toxic composition e.g. a pesticidal, composition, which package comprises a first sheet (1) of non-planar water soluble or water dispersible material defining a concavity enclosing the composition, a second sheet (6) of water soluble or water dispersible material sealed to the first sheet by a continuous closed water soluble or water dispersible heat seal and a, third sheet (4) between the first and second sheets and sealed thereto by a water soluble or water dispersible seal (7) to divide the package into two compartments and a process for making the package are described.
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 October 22, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 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.