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Expired Canadian patentCanada

Carboxypeptidase a.sub.2 and process for preparing same

CA 1165705 A · Owner: Eisai Co. Ltd. · Inventors: Koide, Atsushi; Yoshizawa, Masayuki

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Abstract From the Canadian patent

A new species of carboxypeptidase A.gamma. and a process for preparation thereof are disclosed. The new substance has an amino-terminal sequence with the primary structural formula of:, Asn-Tyr-Ala-Thr-Tyr-His-Thr-Leu-Glu-Glu-Ile-Tyr- Asp-Phe-Met-Asp-Ile-Leu-Val-Ala-Glu-His-Pro-Gln- Leu-, and has the following physiocochemical and enzymochemical properties: (a) state: needle crystals, (b) molecular weight: 38900 (according to gel permeation method) (c) constituent amino acids: As listed in Table 1 (d) metal contained: One Zn atom per molecule (e) coefficient of sedimentation: 3.3, (f) isoelectric point: 4.3 (at an ionic strength of 0.3) (g) specific substrates: …

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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.

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  • Granted April 17, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 2001.
  • 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 11, 1982
GrantedApril 17, 1984
Term endedApril 17, 2001
Patent numberCA 1165705 A
Classification (IPC)C12N9/48

Timeline

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1983198519871989199119931995199719992001Application filedMarch 11, 1982Patent grantedApril 17, 1984Term endedApril 17, 2001

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.