Expired European patentEurope
A technique for generating additional colors in a halftone color image through use of overlaid primary colored halftone dots of varying size
EP 0533593 B1 · Applicant: EASTMAN KODAK COMPANY
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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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 7, 1992 and granted February 26, 1997. A European patent lasts at most 20 years from filing, so its term ended September 7, 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 March 7, 2018.
- 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 7, 1992
PublishedMarch 24, 1993
GrantedFebruary 26, 1997
Term endedSeptember 7, 2012
Application numberEP 92420294
Classification (CPC)H04N1/52 +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.