Expired Canadian patentCanada
Derivative of human growth hormone
CA 1338720 C · Owner: Riggin, Ralph Meridith · Inventors: Becker, Gerald Wayne; Riggin, Ralph Meridith
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A desamido derivative of human growth hormone has been produced and characterized. The derivative arises from a selective desamidation of Asn149 . The resulting Asp149-hGH exhibits full biological activity.
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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 November 12, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 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.
FiledMarch 10, 1989
GrantedNovember 12, 1996
Term endedNovember 12, 2013
Patent numberCA 1338720 C
Classification (IPC)C07K14/61 +2 more
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.