Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Photochromic articles

Photochromic articles

US Patent 5840926 · Granted Nov 24, 1998

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Naphthopyran compounds, photoresponsive compositions and lenses2005
Controlled tintability on mar-resistant coatings2002
Photochromic substituted naphthopyran compounds2002
Photochromic naphthopyran compounds2002
Photochromic articles2000
Photochromic benzopyran compounds1999
Photochromic compounds1998
Coating composition and process for producing coated articles1998
Photochromic naphthopyran compounds1998
Photochromic spironaphthopyran compounds1998
Photochromic chromene derivatives1997
Photochromic spironaphthopyran compounds1997