Inoculation procedure for xanthan gum production
CA 1185911 A · Owner: Kelco Biospecialties Limited · Inventors: Jarman, Trevor R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Inoculation of the nutrient medium for production of xanthan gum by aerobic fermentation is effected at a dilution of 0.5-0.01% using an inoculum comprising an organism of the genus Xanthomonas, wherein the total levels of iron manganese, and zinc, in said nutrient medium are limited such that there is no more than 10 ppm iron, no more than 3 ppm zinc and the ppm ratio of iron:manganese is from 40:1 to 2:1.
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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 April 23, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 23, 2002.
- 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.