Multilayered test device for determining the presence of a liquid sample component, and method of use
CA 1115186 A · Owner: Miles Laboratories, Inc. · Inventors: Rapkin, Myron C.; Fenocketti, Leonard P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A test device is disclosed for determining the presence of a liquid sample constituent. The device comprises a base support member having attached to it an indicator member which produces a detectable response, such as a color change in the presence of the sample constituent. The indicator member comprises an upper reagent layer a lower absorbent, layer and a substantially sample-impervious barrier layer between the upper and lower layers. The indicator member is attached to the base member along the lower side of the absorbent layer.
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 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 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.