Semi-submersible structure
CA 2310014 A1 · Owner: Titreville, Bernard · Inventors: Morvan, Pierre; Kozicz, John Richard; Titreville, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A semi-submersible structure (10) including pontoons (16) and carrying at least one prime mover (22) is provided with prime movers (22) being located , in the pontoons (16). The structure (10) is a semi-submersible rig with a deck (12) supported on two pairs of columns (14 15), each pair of columns being , carried by a respective pontoon (16). Prime mover support equipment and fuel tanks (34, 36) are also located in the pontoons. Ducting for exhaust gases and air for the prime mover is provided in the columns (14 15) and an air inlet , duct (40) is over-pressured by forcing air into the duct. Extraction means is provided for urging gases through a second outlet duct (44) to prevent a …
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 November 13, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2020.
- 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.