Process and diagnostic device for the determination of ammonia and of substrates which react with the formation of ammonia
CA 1113356 A · Owner: Boehringer Mannheim G.M.B.H. · Inventors: Lange, Hans-Rudolf; Rittersdorf, Walter; Selle, Adolf K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a diagnostic device for the determination of ammonia and of substrates reacting with the formation of ammonia, comprising a handle an indicator layer, for gaseous ammonia fixed thereon and an alkaline buffer containing reaction layer which optionally contains additional reagents reacting with the substrate with the formation of ammonia, wherein the indicator layer is securely attached to the handle and above it is arranged the reaction layer at a distance of 10 to 200µ by means of a distance piece, the distance piece and the reaction layer being easily removable from the indicator layer; there is also provided a method of detecting ammonia and substrates …
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 December 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 1998.
- 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.