Test strip for ethanol
CA 1285464 C · Owner: Adams, Ernest C. · Inventors: Adams, Ernest C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ethyl alcohol test strip fabricating and use techniques for testing an individual's saliva to determine his sobriety are disclosed. The test strips employ an alcohol oxidase Peroxidase, and an hydrogen donor indicator such as Tetraalkylbenzidine in a carrrier matrix supported on the strip with the alcohol oxidase functioning as a catalyst to convert any ethanol present along with ambient oxygen to acetaldehyde and hydrogen peroxide. The peroxidase function as catalyst to induce a color change in the hydroqen donor and convert the hydrogen peroxide to water.
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
- Granted July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2008.
- 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.