Expired Canadian patentCanada
Use of silicone resins and fluids to retard marine life buildup in submerged surfaces
CA 2093079 C · Owner: Air Products And Chemicals, Inc. · Inventors: Harakal, Mark Elliot; Nollen, Dieter Rolf
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 method for preventing or reducing the marine life buildup on a submerged surface by applying to the surface an antifouling coating composition comprising a combination of a silicone fluid and a silicone resin.
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 31, 1993 and granted July 1, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 31, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 31, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 31, 1993
GrantedJuly 1, 1997
Term endedMarch 31, 2013
Patent numberCA 2093079 C
Classification (IPC)C09D5/14 +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.