Inventor
HUMPAL PAUL E
US19 patents
⚠️ This page may combine multiple inventors who share the name “HUMPAL PAUL E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
3M INNOVATIVE PROPERTIES CO
12 patentsUS6398370B1Jun 4, 2002
Light control device
3M INNOVATIVE PROPERTIES CO264 citations98
US6656571B2Dec 2, 2003
Cube corner cavity based retroreflectors and methods for making same
3M INNOVATIVE PROPERTIES CO33 citations92
US9404637B2Aug 2, 2016
Color shift sign
3M INNOVATIVE PROPERTIES CO9 citations84
US9291752B2Mar 22, 2016
Retroreflecting optical construction
3M INNOVATIVE PROPERTIES CO5 citations84
US8967837B2Mar 3, 2015
Solid state light with features for controlling light distribution and air cooling channels
3M INNOVATIVE PROPERTIES CO10 citations83
US7419272B2Sep 2, 2008
Day and night film
3M INNOVATIVE PROPERTIES CO12 citations79
US10155834B2Dec 18, 2018
Free radically polymerizable siloxanes and siloxane polymers
3M INNOVATIVE PROPERTIES CO2 citations73
US6223401B1May 1, 2001
Intermeshable articles
3M INNOVATIVE PROPERTIES CO7 citations72
US9267674B2Feb 23, 2016
Solid state light with enclosed light guide and integrated thermal guide
3M INNOVATIVE PROPERTIES CO2 citations61
US10619015B2Apr 14, 2020
Modification of siloxane polyoxamide copolymers with ultraviolet light
3M INNOVATIVE PROPERTIES CO0 citations52
US9551816B2Jan 24, 2017
Retroreflecting optical construction
3M INNOVATIVE PROPERTIES CO1 citations52
US9354386B2May 31, 2016
Solid state area light and spotlight with light guide and integrated thermal guide
3M INNOVATIVE PROPERTIES CO0 citations41