Device for withdrawing samples from molten metals
CA 2025203 C · Owner: Baerts, Christiaan Eugene Edouard · Inventors: Baerts, Christiaan Eugene Edouard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Two metallic half dishes are fitted together to form a sample container arranged in the hollow space of a carrying tube. The sample container serves to withdraw samples from molten metals. The hollow space surrounding the sample container is filled with granules made of a refractory material such as, corundum. The hollow space is preferably bordered on its sides by a cardboard tube, which is inserted into the carrying tube.
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 September 12, 1990 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 12, 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.