Uv lamp transmittance controller
CA 2109718 C · Owner: Hallett, Ronald C. · Inventors: Hallett, Ronald C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high intensity, high temperature UV Lamp reactor system for treating aqueous media on a continuous flow basis is provided. The reactor system comprises a cylindrical reactor vessel having inlets and outlets, which permit the aqueous media to flow on a continuous basis through the reactor, a cylindrical UV lamp provided in the vessel and concentric therewith, a cylindrical UV transparent sheath for isolating the UV lamp from the interior space of the reactor vessel the sheath and lamp being concen-, tric with the cylindrical vessel the sheath being sealed to the ends of the vessel to isolate the UV lamp from the aqueous media flowing through the annular reactor chamber, a brush device is …
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 June 12, 1992 and granted April 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 12, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 12, 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.