Expired European patentEurope
Method for the purification of the HBc antigen and method for the measurement of HBc antibodies by using said purified HBc antigen
EP 0185391 B1 · Applicant: Juridical Foundation The Chemo-Sero-Therapeutic Research Institute
Overview
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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 20, 1985 and granted August 28, 1991. A European patent lasts at most 20 years from filing, so its term ended December 20, 2005.
- A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by June 20, 2011.
- We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledDecember 20, 1985
PublishedJune 25, 1986
GrantedAugust 28, 1991
Term endedDecember 20, 2005
Application numberEP 85116388
Classification (CPC)C07K14/005 +1 more
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.