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Expired Canadian patentCanada

Hepatocyte growth factor

CA 1300010 C · Owner: Mitsubishi Chemical Industries Limited · Inventors: Nakayama, Hiroyuki; Tsubouchi, Hirohito; Hashimoto, Shuji

CIPO record

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Abstract From the Canadian patent

17 -, ABSTRACT:, A hepatocyte growth factor comprising a proteinous substance derived from human blood and showing the following physicochemical properties and physiologic activity: i) its molecular weight is estimated to be approximately 76,000 to 92,000 by SDS-PAGE analysis (under non-reductive condition); ii) it possesses HGF activity;, iii) the HGF activity is inactivated by heat treatment for 10 minutes at 80°C;, iv) the HGF activity may be lost by digestion with trypsin or with chymotrypsin; and v) it has a high affinity for heparin.

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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 May 5, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 5, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 4, 1987
GrantedMay 5, 1992
Term endedMay 5, 2009
Patent numberCA 1300010 C
Classification (IPC)C07K14/47 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJune 4, 1987Patent grantedMay 5, 1992Term endedMay 5, 2009

Sources & verification

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