Method for diagnosis of periodontal disease by detection of alanine aminotransferase
CA 2009813 C · Owner: Baram, Peter · Inventors: Baram, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are methods for determining the presence of periodontal disease in mammals. The methods include the steps of (1) sampling ginqival crevicular fluid, (2) assaying the crevicular fluid sample by colorimetric or other means to determine levels of alanine aminotransferase present, and (3) correlating the levels of alanine aminotransferase present in the crevicular fluid sample with a standard which is indicative of the presence of periodontal disease.
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 February 12, 1990 and granted September 9, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 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.