DH

David M. Hopstock

3M: 3 patents #4,214 of 11,543Top 40%
IM Imation: 2 patents #167 of 622Top 30%
CI Corning Incorporated: 1 patents #2,300 of 3,867Top 60%
UM University of Minnesota: 1 patents #1,216 of 2,951Top 45%
UI US Dept of the Interior: 1 patents #132 of 508Top 30%
📍 Morris, MN: #7 of 97 inventorsTop 8%
🗺 Minnesota: #9,275 of 52,454 inventorsTop 20%
Overall (All Time): #664,240 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
6650815 Optical fiber encoded with data signal Daniel Warren Hawtof, Gregory F. Jacobs 2003-11-18
6468678 Conformable magnetic articles for use with traffic bearing surfaces methods of making same systems including same and methods of use Thomas J. Dahlin, Gregory F. Jacobs, Robert L. Keech, Richard E. Fayling, Richard G. Newell +2 more 2002-10-22
6253924 Magnetic separator apparatus and methods regarding same Rodney L. Bleifuss 2001-07-03
5853846 Conformable magnetic articles underlaid beneath traffic-bearing surfaces Gary W. Clark, Thomas J. Dahlin, Richard E. Fayling, Bernard A. Gonzalez, Gregory F. Jacobs +1 more 1998-12-29
5626956 Hexagonal magnetic ferrite pigment for high density magnetic recording applications John S. Roden, Gunther H. Dierssen, Ronald S. Sapieszko 1997-05-06
5616414 Hexagonal magnetic ferrite pigment for high density magnetic recording applications John S. Roden, Gunther H. Dierssen, Ronald S. Sapieszko 1997-04-01
5378384 Process of making hexagonal magnetic ferrite pigment for high density magnetic recording applications John S. Roden, Gunther H. Dierssen, Ronald S. Sapieszko 1995-01-03
4192738 Process for scavenging iron from tailings produced by flotation beneficiation and for increasing iron ore recovery Arthur COLOMBO 1980-03-11