Stable chemical compositions containing chromogenic materials or mixtures of chromogenic materials and peroxides, and stabilizing chemical compositions and methods for obtaining the stable chemical compositions
CA 1329475 C · Owner: Savyon Diagnostics Limited · Inventors: Ben-Michael, Abraham
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Chromogenic materials which react to give a color reaction when in the presence of a peroxide ROOR' decomposing to give a radical oxygen are unstable when dissolved to give working solutions for use in chromogenic reactions. Compositions containing in addition to the chromogenic material also a peroxide needed in the said reaction are also unstable, leading to premature appearance of color. Stable chemical compositions containing chromogenic materials and stable compositions containing mixtures of chromogenic materials and peroxides are described, which can be used in chromogenic reactions after having been stored for long periods of time. Also described are stabilizing chemical …
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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 May 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2011.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.