Scintillation crystal modules and methods of making the same
CA 2209580 C · Owner: Huth, Scott T. · Inventors: Huth, Scott T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a scintillation crystal module having an epoxy seal which has a coefficient of thermal expansion which is substantially the same as the backcap of the gamma camera. Among the suitable epoxy systems, the CTE of the epoxy could be modified somewhat by choosing a different catalyst or by adjusting the resin:catalyst ratio. The presently preferred epoxy system is a STYCAST R 2850 FT system available from W.R. Grace & Co. Using "catalyst 9" or "catalyst 11" from that system a CTE of, approximately 17.33x10-6 to approximately 19.4x10-6 in/in°F can be easilyachieved. It has been discovered through analysis using FEA that an epoxy with a CTE in the range of 9.0 to 20.0x10-6 …
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 July 4, 1997 and granted September 5, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 4, 2019.
- 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.