Cased glory hole system
CA 2066299 C · Owner: Macgregor, Ian · Inventors: Macgregor, Ian; Gilbert, Denis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A glory hole silo comprising a cylindrical casing open at the upper end thereof; an upwardly open porch for supporting a flowline, said porch extending horizontally from and cantilevered with respect to said casing the upper, surface of said porch opening to the interior of said casing and provided with means communicating with the interior of said casing for attaching a flowline; and a removable roof extending over the open upper end of said casing and porch. The porch structure permits flowlines to be readily connected without the intervention of a diver.
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 April 16, 1992 and granted September 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 16, 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.