Method of obtaining streptomyces protoplasts capable of efficient cell regeneration
CA 1105403 A · Owner: Eli Lilly And Company · Inventors: Baltz, Richard H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process of obtaining Streptomyces protoplasts which are able to regenerate viable cells with high efficiency is disclosed. The process involves growing Streptomyces cells to a particular physiological state the transition, phase between the exponential and stationary growth phases and then forming protoplasts. The physiological state of the cells at the time of protoplast formation is crucial for efficient cell regeneration. Protoplasts obtained by this process enhance the use of protoplast-fusion techniques to effect genetic exchange within the genus Streptomyces thereby facilitating the construction of hybrid or recombinant Streptomyces strains with useful properties. X-4479
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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 July 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 1998.
- 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.