Patent Yard Sign in
Expired Canadian patentCanada

The method of obtaining immunotropic antiviral preparation

CA 2399310 C · Owner: Ladygina, Alexandra Yurievna · Inventors: Kaplin, Valery Yurievich; Vainberg, Mikhail Yurievich; Ladygina, Alexandra Yurievna

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

The invention relates to chemical and pharmaceutical industry and medicine namely, to , the method of obtaining immunotropic apyrogenic, non-toxic, non-resistant , preparations possessing high antiviral activity towards RNA- and DNA-viruses and under multiple , infection, these preparations being obtained from animal material (soft roe of sturgeon fish or , salmon fish, calf thymus chicken blood, pig spleen). To obtain immunotropic antiviral , pharmaceutical preparations possessing high therapeutic activity towards RNA- and DNA-viruses , defatted soft roe of sturgeon fish or salmon fish or calf thymus, or chicken , blood, or pig spleen are ground and homogenized in citrate-salt …

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

  • Filed April 24, 2001 and granted September 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2023.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 24, 2001
GrantedSeptember 18, 2012
Term endedApril 24, 2021
Patent numberCA 2399310 C
Classification (IPC)A61K31/71 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedApril 24, 2001Patent grantedSep 18, 2012Term endedApril 24, 2021

Sources & verification

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