Expired European patentEurope
9-Hydroxyalkyl-purines, processes for preparing them and therapeutical composition containing the 9-hydroxyalkyl-purines as active ingredients
EP 0009155 B1 · Applicant: Sloan-Kettering Institute For Cancer Research
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 September 1, 1979 and granted November 17, 1982. A European patent lasts at most 20 years from filing, so its term ended September 1, 1999.
- 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 March 1, 2005.
- 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.
FiledSeptember 1, 1979
PublishedApril 2, 1980
GrantedNovember 17, 1982
Term endedSeptember 1, 1999
Application numberEP 79103233
Classification (CPC)A61P35/00 +2 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.