Expired European patentEurope
Optical polarizing films with designed color shifts depending on the angle of incidence, the films having substantially no reflection bands in the visible spectrum for normally incident light
EP 1588198 B1 · Applicant: 3M Innovative Properties 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 December 24, 2003 and granted May 4, 2016. A European patent lasts at most 20 years from filing, so its term ended December 24, 2023.
- Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
- 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 24, 2003
PublishedOctober 26, 2005
GrantedMay 4, 2016
Term endedDecember 24, 2023
Application numberEP 03814971
Classification (CPC)B32B27/36 +2 more
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.