Filament for irradiating a living body and method for producing a filament for irradiating a living body
CA 2188351 C · Owner: Verin, Vitali E. · Inventors: Verin, Vitali E.; Sivtzov, Sergej V.; Popowski, Youri G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A filament (1) for irradiating a living body comprises a core (2) of material capable to irradiate radioactive radiation clad in a tubular casing (3) of protective material different from the material farming the core. The materials forming the core and casing have a purity not less than 99.5 atomic percent and a grain size not exceeding 30 µm and the outer diameter of the filament (1) is not less than 80 µm.
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 October 21, 1996 and granted January 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 21, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 2018.
- 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.