Inventor
HUGHES FRANK J
US16 patents
⚠️ This page may combine multiple inventors who share the name “HUGHES FRANK J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VISION EASE LENS INC
13 patentsUS5658502AAug 19, 1997
Photochromic articles
VISION EASE LENS INC69 citations95
US6113812ASep 5, 2000
Photochromic articles
VISION EASE LENS INC25 citations92
US5840926ANov 24, 1998
Photochromic articles
VISION EASE LENS INC31 citations92
US5786032AJul 28, 1998
Coating composition and process for producing coated articles
VISION EASE LENS INC22 citations92
US5759450AJun 2, 1998
Photochromic naphthopyran compounds
VISION EASE LENS INC24 citations92
US5702645ADec 30, 1997
Photochromic chromene derivatives
VISION EASE LENS INC23 citations92
US5628935AMay 13, 1997
Photochromic spironaphthopyran compounds
VISION EASE LENS INC20 citations92
US6337409B1Jan 8, 2002
Photochromic naphthopyran compounds
VISION EASE LENS INC14 citations83
US5705102AJan 6, 1998
Photochromic spironaphthopyran compounds
VISION EASE LENS INC15 citations73
US6863843B2Mar 8, 2005
Naphthopyran compounds, photoresponsive compositions and lenses
VISION EASE LENS INC2 citations62
US5869662AFeb 9, 1999
Photochromic benzopyran compounds
VISION EASE LENS INC3 citations62
US5847168ADec 8, 1998
Photochromic compounds
VISION EASE LENS INC6 citations62
US5679805AOct 21, 1997
Photochromic spironaphthopyran compounds
VISION EASE LENS INC6 citations62