Assignee

WEIGAND UDO

DE3 patents

Top patents by PatentIndex Score

US9963574B2May 8, 2018

Photochromic fluorenopyrans with defined dibenzo[B,D]pyrano fused attachment

WEIGAND UDO0 citations36

US9151872B2Oct 6, 2015

Photochromic double-fused naphthopyrans

WEIGAND UDO0 citations36

US8987477B2Mar 24, 2015

Photochromic bis-idenofused naphthopryans

WEIGAND UDO0 citations36