International Patent: COMBINATION OF HOMOLOGOUS PHOTOCHROMIC ANNULATED NAPHTHOPYRANS FOR EASILY REALISING AESTHETIC GREY AND BROWN COLOUR TONES IN PHOTOTROPIC POLYMERS

GENEVA, July 27 -- RODENSTOCK GMBH filed a patent application (EP2025/085310) for “COMBINATION OF HOMOLOGOUS PHOTOCHROMIC ANNULATED NAPHTHOPYRANS FOR EASILY REALISING AESTHETIC GREY AND BROWN COLOUR TONES IN PHOTOTROPIC POLYMERS”. With publication no. WO/2026/153685, here are the other details related to the patent application:

Kind: Initial Publication with ISR [A1]

IPC: C09B 67/22

Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).

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