Expired Canadian patentCanada
High strength boat hull structure
CA 2009202 C · Owner: Schad, Robert D. · Inventors: Schad, Robert D.
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 high strength impact resistant hull structure including method of manufacture is disclosed having inner and outer skins wherein the outer skin comprises a plurality of wearstrips keyed to one another and keyed to the inner skin.
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 February 2, 1990 and granted July 23, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 2, 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.
FiledFebruary 2, 1990
GrantedJuly 23, 1996
Term endedFebruary 2, 2010
Patent numberCA 2009202 C
Classification (IPC)B63B5/24 +1 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.