Microbiological scaled sterility test strips
CA 1077815 A · Owner: Ethicon · Inventors: Kereluk, Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for obtaining a permanent visual record of the microbiological effectiveness of a sterilizing cycle is provided by a spore carrier strip having a plurality of individual spore colony sites defined on the surface thereof each of said sites containing a different population of spores as for, example, 102, 103, 104, 105, and 106. The spore carrier is exposed to the sterilizing cycle, then incubated in a sterile nutrient culture medium containing a color indicator for viable microorganisms such as 2,3,5-triphenyl tetrazolium chloride. The development or lack of development of color on each spore colony site of successively increasing spore populations indicates the degree …
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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 20, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 1997.
- 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.