Compositions – Light transmission modifying compositions – Displaying color change
Reexamination Certificate
2006-08-22
2006-08-22
Gulakowski, Randy (Department: 1712)
Compositions
Light transmission modifying compositions
Displaying color change
C351S163000, C524S110000, C544S150000, C544S375000
Reexamination Certificate
active
07094368
ABSTRACT:
Described are compositions of at least one material represented by a pyrano[3,2-c]quinoline structure, a pyrano[3,2-c]quinolinone structure or mixtures thereof. The pyrano[3,2-c]quinoline structure is characterized by having a nitrogen atom at the 6-position ring atom and an oxy-substituent at the 5-position ring atom. The pyrano[3,2-c]quinolinone structure is characterized by having a substituted nitrogen atom at the 6-position ring atom and an oxo-substituent at the 5-position ring atom, the nitrogen atom substituents being hydrogen, aliphatic substituents, cycloaliphatic substituents, aromatic substituents, heteroaromatic substituents or a combination thereof. Both of the pyrano[3,2-c]quinoline and pyrano[3,2-c]quinolinone structures are characterized by having two substituents at the 2-position ring atom. Also described are photochromic articles that contain or that have coatings or films containing at least one of the novel compositions or combinations thereof with other photochromic materials.
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Gemert Barry Van
Kim Beon-Kyu
Kumar Anil
Gulakowski Randy
Kugel Timothy J.
Mallak Frank P.
Pingitore Linda
Transitions Optical Inc.
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