Patent · US Active

Photochromic and electrochromic compounds

US12234408B2 · kind B2 · utility

0Cited by
0References
19Claims
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Assignee

Inventors

Key dates

Filing dateAug 30, 2019
Grant dateFeb 25, 2025
Priority date—
Expiry dateJul 17, 2041

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02F1/1516
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Provided are novel naphthalene diimide (NDI) compound of Formula 1. The compounds may exhibit colour change from substantially transparent to substantially black upon electrochemical or photochemical stimulus and may be useful in smart windows.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.