Assignee
WEIGAND UDO
DE·3 granted patents·0 citations·filing 2012–2013
Top patents by PatentIndex Score
3 records- 0140US8987477B2Photochromic bis-idenofused naphthopryansWEIGAND UDO·Filed 2012·Granted Mar 24, 2015·0 cites·8 claims
- 0239US9963574B2Photochromic fluorenopyrans with defined dibenzo[B,D]pyrano fused attachmentWEIGAND UDO·Filed 2013·Granted May 8, 2018·0 cites·9 claims
- 0338US9151872B2Photochromic double-fused naphthopyransWEIGAND UDO·Filed 2012·Granted Oct 6, 2015·0 cites·11 claims
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