Non-a non-b hepatitis antigens
CA 1259921 A · Owner: Mitsubishi Chemical Industries Limited · Inventors: Shimizu, Yohko; Ono, Yasushi; Yamada, Ei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is an antigen specific to non-A non-B hepatitis. The antigen has a density of approximately 1.17 to 1.26 by sucrose density gradient centrifugation. The antigen reacts with an antibody which is obtained by transforming lymphocytes from a human or chimpanzee individual suffering from non-A non-B hepatitis with EB virus screening the, transformed cells for the non-A non-B hepatitis related antibody, and cloning positive cells. - 20 -
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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.