Expired European patentEurope
Transfer imaging using metal-azo and metal-azomethine dyes
EP 0508573 B1 · Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY
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 February 21, 1992 and granted June 7, 1995. A European patent lasts at most 20 years from filing, so its term ended February 21, 2012.
- 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 August 21, 2017.
- 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.
FiledFebruary 21, 1992
PublishedOctober 14, 1992
GrantedJune 7, 1995
Term endedFebruary 21, 2012
Application numberEP 92301457
Classification (CPC)B41M5/3856
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.