Inventor

CHIRHART DENNIS J

US4 patents

⚠️ This page may combine multiple inventors who share the name “CHIRHART DENNIS J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

3M INNOVATIVE PROPERTIES CO

2 patents

US6325515B1Dec 4, 2001

Cube corner retroreflective article with enhanced pigmentation

3M INNOVATIVE PROPERTIES CO53 citations95

US7329447B2Feb 12, 2008

Retroreflective sheeting with controlled cap-Y

3M INNOVATIVE PROPERTIES CO12 citations78

MINNESOTA MINING & MFG

2 patents

US4983436AJan 8, 1991

Retroreflective sheeting with backing film

MINNESOTA MINING & MFG116 citations93

US4919741AApr 24, 1990

Method for making embossed information plate having retroreflective sheeting on the surface thereof

MINNESOTA MINING & MFG28 citations89