Lenson energy dissipator for shorewalls
CA 2042279 A1 · Owner: Lenson, Walter J. · Inventors: Lenson, Walter J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
F o r m 24, ( ss. 21, 31, 34, and 142 ) A B S T R A C T, Shore erosion on the Great Lakes and other large inland lakes results in the annual loss of millions of dollars in lost land and damages to structures. There are numerous ways in whichshores can be protected. These include: Beach Nourishment Revetments, Perch Beaches Shorewalls Headlands & Groynes Breakwaters & Jetties Protection works that gradually dissipate wave energy (i.e. beaches) are preferable to vertical structures (shorewalls) that directly confront the full force of waves. The amount of energy contained in a wave is directly proportional to its wavelength and the square of its height. For instance a two-foot, wave with a …
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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 May 9, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 9, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 2013.
- 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.