Container for storage of radioactive materials
CA 2071980 A1 · Owner: Rso D/B/A Radiation Service Organization · Inventors: Crowson, Francis R.; Disalvo, Richard J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provision is made for a container (10) which stores and shields radioactive material. Included in the container (10) is an enclosure defining a hollow chamber (20) in which radioactive material is storable. A closure assembly (14) cooperates with the enclosure in such a manner that an internal plug (30) thereof effects a preselected gas-impervious sealing engagement. The closure assembly (14) includes a lug (36) which is rotatable to urge the assembly into sealing engagement and which torsionally fails following achievement of the desired sealing engagement of the closure plug (30) to thereby prevent the lug (36) from being subsequently used to open the container. The container (10) and …
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 December 20, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2012.
- 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.