DH

David L. Hofeldt

3M: 11 patents #1,441 of 11,543Top 15%
Overall (All Time): #445,252 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12123700 Methods and systems for blown film thickness measurement Thomas J. Strey, Gregory J. McGill, Jay M. Krieger, Christopher J. Rother, Paul C. Thomas 2024-10-22
11143590 Time-domain terahertz measurement system having a single reference surface 2021-10-12
9977154 Precision control of web material having micro-replicated lens array Robert L. Brott, Daniel H. Carlson, James N. Dobbs, Andrzej P. Jaworski, Glen A. Jerry +3 more 2018-05-22
9002072 System for detection of non-uniformities in web-based materials Catherine P. Tarnowski, Kenneth G. Brittain, Andrzej P. Jaworski, Gregory D. Kostuch, John A. Ramthun +4 more 2015-04-07
8965116 Computer-aided assignment of ratings to digital samples of a manufactured web product Evan J. Ribnick, Kenneth G. Brittain, Gregory D. Kostuch, Catherine P. Tarnowski, Derek H. Justice +2 more 2015-02-24
8339573 Method and apparatus for photoimaging a substrate Daniel J. Theis, Levent Biyikli, Jeffrey H. Tokie 2012-12-25
7969560 Optical property sensor Gregory D. Kostuch 2011-06-28
7957000 Web inspection calibration system and related methods Derek H. Justice, John A. Ramthun, Catherine P. Tarnowski, Wenyuan Xu 2011-06-07
7773226 Web inspection calibration system and related methods Derek H. Justice, John A. Ramthun, Catherine P. Tarnowski, Wenyuan Xu 2010-08-10
7202490 LED modifying apparatus and method Francis M. Aguirre, Peter T. Benson, Michele A. Craton, Jack W. Lai, David L. Phillips 2007-04-10
7189983 LED modifying apparatus and method Francis M. Aguirre, Peter T. Benson, Michele A. Craton, Gordon D. Henson, Jack W. Lai +2 more 2007-03-13