Solid support medium for microbe preparations and a method for cultivation of microbes
CA 2107350 C · Owner: Kemira Oyj · Inventors: Seiskari, Pekka; Pulkkanen, Heikki; Vapaaoksa, Pekka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for the culture of microbes in a solid culture medium, wherein substantially cation-free and porous silica frames of silicate particles are treated with a nutrient source, and one or more microbe species are added. The invention also relates to a product which is made up of substantially cation-free and porous silica frames of silicate particles and of one or more microbe species.
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
- Filed April 22, 1991 and granted March 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 22, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2013.
- 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.