Process for producing menaquinone-4
CA 1338471 C · Owner: Kyowa Hakko Kogyo Co. Ltd. · Inventors: Takayama, Kenichiro; Shirasuna, Shizuko; Tomohiro, Susumu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing menaquinone-4 which comprises cultivating a microorganism belonging to the genus Corynebacterium, Brevibacterium, Microbacterium Curtobacterium, Aureobacterium, Arthrobacter or a, microorganism belonging to the species Flavobacterium marinotypicum, Flavobacterium flavescens or Flavobacterium dehydrogenans and being capable of producing menaquinone-4 in a nutrient medium accumulating menaquinone-4 in the culture broth and, recovering menaquinone-4 therefrom.
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 July 23, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 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.