DH

David B. Harder

DC Donaldson Company: 21 patents #54 of 695Top 8%
Caterpillar: 14 patents #341 of 8,398Top 5%
AS Advanced Filtration Systems: 12 patents #5 of 11Top 50%
📍 Burnsville, MN: #25 of 632 inventorsTop 4%
🗺 Minnesota: #3,093 of 52,454 inventorsTop 6%
Overall (All Time): #188,579 of 4,157,543Top 5%
22
Patents All Time

Issued Patents All Time

Showing 1–22 of 22 patents

Patent #TitleCo-InventorsDate
12239929 Filter cartridge having air vent with restriction, assemblies, and methods Kurt B. Joscher, Jacob Sanders 2025-03-04
12161961 Liquid filter arrangement and methods Michael J. Gustafson, Kurt B. Joscher, Brian Tucker 2024-12-10
12036487 Fuel filter with coalescer Scott A. Betcher, Kenneth P. Skaja, Paul R. Hennen, Gwenole STOUTHUYSEN, Brian Tucker 2024-07-16
11654384 Liquid filter arrangement and methods Michael J. Gustafson, Kurt B. Joscher, Brian Tucker 2023-05-23
11571641 Fuel filter with coalescer Scott A. Betcher, Kenneth P. Skaja, Paul R. Hennen, Gwenole STOUTHUYSEN, Brian Tucker 2023-02-07
11369903 Liquid filter arrangement and methods Michael J. Gustafson, Kurt B. Joscher, Brian Tucker 2022-06-28
10744431 Liquid filter arrangement and methods Michael J. Gustafson, Kurt B. Joscher, Brian Tucker 2020-08-18
9511314 Canister filter system with drain that cooperates with filter element Mark T. Allott, David Ofori-Amoah, Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich +2 more 2016-12-06
9089795 Fluid filter system Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, John R. Hacker, Richard J. Eisenmenger 2015-07-28
8540080 Fluid filter system Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, John R. Hacker, Richard J. Eisenmenger 2013-09-24
8501003 Canister filter system with drain that cooperates with filter element Mark T. Allott, David Ofori-Amoah, Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich +2 more 2013-08-06
8419938 Fluid filter system Jeffrey R. Ries, Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, John R. Hacker +1 more 2013-04-16
8272516 Fluid filter system Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, John R. Hacker, Richard J. Eisenmenger 2012-09-25
D656577 Fuel filter Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, John R. Hacker, Richard J. Eisenmenger 2012-03-27
D655781 Fuel filter Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, John R. Hacker, Richard J. Eisenmenger 2012-03-13
D655376 Fuel filter Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, John R. Hacker, Richard J. Eisenmenger 2012-03-06
D648822 Fuel filter Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, John R. Hacker, Richard J. Eisenmenger 2011-11-15
D646750 Fuel filter Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, John R. Hacker, Richard J. Eisenmenger 2011-10-11
D646751 Filter Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, John R. Hacker, Richard J. Eisenmenger 2011-10-11
D646350 Filter Christopher J. Salvador, Randall W. Heibenthal, Dennis M. Deedrich, John R. Hacker, Richard J. Eisenmenger 2011-10-04
7556155 Fluid filter and methods Philip Edward Johnson, Eivind Stenersen, Curt A. Rausch, John R. Hacker 2009-07-07
6384369 Liquid filter construction and methods Eivind Stenersen, John R. Hacker, Gerald D. Kiral, Ronald W. Streitmatter, Kevin K. Socha 2002-05-07