JH

John T. Herman

DC Donaldson Company: 26 patents #39 of 695Top 6%
📍 Mahtomedi, MN: #15 of 255 inventorsTop 6%
🗺 Minnesota: #2,420 of 52,454 inventorsTop 5%
Overall (All Time): #155,589 of 4,157,543Top 4%
26
Patents All Time

Issued Patents All Time

Showing 1–25 of 26 patents

Patent #TitleCo-InventorsDate
8844270 Diesel particulate filter regeneration system including shore station Wayne M. Wagner, Mary J. Lorenzen, Wenzhong Zhang 2014-09-30
8769938 Exhaust treatment device with electric regeneration system Wayne M. Wagner, Mary J. Lorenzen, Wenzhong Zhang 2014-07-08
8256060 Apparatus for cleaning exhaust aftertreatment devices and methods Wayne M. Wagner, Mary J. Lorenzen 2012-09-04
8117832 Exhaust treatment device with electric regeneration system Wayne M. Wagner, Mary J. Lorenzen, Wenzhong Zhang 2012-02-21
7410530 Apparatus for cleaning exhaust aftertreatment devices and methods Wayne M. Wagner, Mary J. Lorenzen 2008-08-12
7294162 Exhaust filter Steve Anderson, Jared D. Blaisdell, John Belisle, John Hiemstra, Gary Dale Reeves +1 more 2007-11-13
6508277 Flexible pipe with compressed ends Julian A. Imes, Wayne M. Wagner 2003-01-21
6311736 Flexible hose and method for manufacturing Michael J. Protas, Wayne M. Wagner 2001-11-06
6305054 Exhaust system clamp Julian A. Imes, Wayne M. Wagner, James P. Shields 2001-10-23
6234541 U-bolt clamp for sealing lap joints Wayne M. Wagner, Michael J. Protas, James P. Shields 2001-05-22
D436028 U-bolt clamp Wayne M. Wagner, Michael J. Protas, James P. Shields 2001-01-09
6123369 Pipe lap joint and methods Wayne M. Wagner, Michael J. Protas 2000-09-26
6019809 Filtration arrangement Brad E. Kahlbaugh, Susan B. Reinhart, Denis J. Dudrey 2000-02-01
5800587 Filtration arrangement and method Brad E. Kahlbaugh, Susan B. Reinhart, Denis J. Dudrey 1998-09-01
5792227 Filtration arrangement Brad E. Kahlbaugh, Susan B. Reinhart, Denis J. Dudrey 1998-08-11
5762669 Filtration arrangement Brad E. Kahlbaugh, Susan B. Reinhart, Denis J. Dudrey 1998-06-09
5762670 Filtration arrangement Brad E. Kahlbaugh, Susan B. Reinhart, Denis J. Dudrey 1998-06-09
5622537 Filtration arrangement Brad E. Kahlbaugh, Susan B. Reinhart, Denis J. Dudrey 1997-04-22
5423892 Filtration arrangement Brad E. Kahlbaugh, Susan B. Reinhart, Denis J. Dudrey 1995-06-13
5364456 Filtration arrangement and method Brad E. Kahlbaugh, Susan B. Reinhart, Denis J. Dudrey 1994-11-15
5246472 Apparatus for filtering engine exhaust Wayne M. Wagner, Mervin E. Wright, Bruce Hoppenstedt, James A. LeBlanc 1993-09-21
5238474 Filtration arrangement Brad E. Kahlbaugh, Susan B. Reinhart, Denis J. Dudrey 1993-08-24
5082476 Filtration arrangement and method Brad E. Kahlbaugh, Susan B. Reinhart, Denis J. Dudrey 1992-01-21
4406651 Multi-phase self purging centrifuge Denis J. Dudrey, Bernard A. Matthys 1983-09-27
4366069 Coolant recovery system Denis J. Dudrey, Girma Wolde-Michael, Delmer L. Radeztsky 1982-12-28