Protective compositions
CA 2106188 C · Owner: Kelley, Donald W. · Inventors: Kelley, Donald W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Active ingredient containing liquid formulations wherein the active ingredient is made water and oil resistant after application thereof to a substrate by the addition to the formulation of a fluorinated acrylic copolymer. The substrate can be either an animate or inanimate object. Active ingredients include repellents attractants, pesticides, growth regulators sunscreen agents, or, medicines. The liquid formulations can be aqueous or organic solvent based or a mixture thereof.
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 March 13, 1992 and granted January 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 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.