Measurement of gastric emptying
CA 2239018 C · Owner: Meretek Diagnostics, Inc. · Inventors: Klein, Peter D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A biscuit adapted to be ingested by a patient to enable measurement of gastric emptying was added prior to baking Spirulina Platensis alga grown in a 13CO2 atmosphere. These single cell organisms are oxidized after digestion in the small intestine to produce a detectable rise in level of 13CO2 in the patient's breath which is sampled and plotted to enable diagnosis of abnormal gastric emptying rates.
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 January 10, 1997 and granted May 8, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 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.