Expired Canadian patentCanada
Hydrolytic enzyme material
CA 1077837 A · Owner: Klein, Gerold K. V. · Inventors: Houck, John C.; Klein, Gerold K. V.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosure relates to novel hydrolytic enzyme product derived from the pineapple plant useful for the digestion dissection and separation of non-viable devitalized tissue, especially eschar tissue from viable tissue in a mammalian host.
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 May 20, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMay 20, 1980
Term endedMay 20, 1997
Patent numberCA 1077837 A
Classification (IPC)C12N9/50 +1 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.