Inventor
DREYER JOHN F
US9 patents
⚠️ This page may combine multiple inventors who share the name “DREYER JOHN F”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MINNESOTA MINING & MFG
6 patentsUS5889615AMar 30, 1999
Dual axis retroreflective articles
MINNESOTA MINING & MFG72 citations95
US5745632AApr 28, 1998
Totally internally reflecting light conduit
MINNESOTA MINING & MFG73 citations95
US6055108AApr 25, 2000
Imaging articles and methods using dual-axis retroreflective elements
MINNESOTA MINING & MFG27 citations92
US5692822ADec 2, 1997
Uniform bi-directional dependent line light source via controlled partial reflection
MINNESOTA MINING & MFG24 citations92
US5504544AApr 2, 1996
Projector with multiple lamp light source
MINNESOTA MINING & MFG47 citations91
US3991606ANov 16, 1976
Apparatus and method for converting mechanical wave energy to optical energy
MINNESOTA MINING & MFG10 citations73
3M INNOVATIVE PROPERTIES CO
3 patentsUS6052164AApr 18, 2000
Electroluminescent display with brightness enhancement
3M INNOVATIVE PROPERTIES CO96 citations97
US6045230AApr 4, 2000
Modulating retroreflective article
3M INNOVATIVE PROPERTIES CO92 citations95
US6282026B1Aug 28, 2001
Retroreflectors having two optical surfaces and varying retroreflectivity
3M INNOVATIVE PROPERTIES CO30 citations90