DC

Dennis J. Chirhart

3M: 4 patents #3,441 of 11,543Top 30%
📍 West St. Paul, MN: #30 of 108 inventorsTop 30%
🗺 Minnesota: #15,886 of 52,454 inventorsTop 35%
Overall (All Time): #1,250,243 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7329447 Retroreflective sheeting with controlled cap-Y Mark Young, Steven Kelley 2008-02-12
6325515 Cube corner retroreflective article with enhanced pigmentation James C. Coderre, John W. Frank, Stephen A. Johnson, Daniel J. McGurran 2001-12-04
4983436 Retroreflective sheeting with backing film Terry R. Bailey, Howard R. Tolliver, Douglas C. Degler 1991-01-08
4919741 Method for making embossed information plate having retroreflective sheeting on the surface thereof Michael P. Daniels, Kenneth G. Kneipp 1990-04-24