Prosecution Insights
Last updated: April 19, 2026

Donaldson Company Inc.

25 pending office actions

Portfolio Summary

25
Total Pending OAs
10
Final Rejections
15
Non-Final OAs

Pending Office Actions

App #TitleExaminerArt UnitStatusFiled
18601203 MONITORING DEVICES FOR AIR FILTRATION SYSTEMS GITMAN, GABRIEL E 1772 Non-Final OA Mar 11, 2024
18582077 BONDED ARTICLES FLORES JR, DONALD M 1781 Non-Final OA Feb 20, 2024
18556048 AIR CLEANER ARRANGEMENT AND ASSOCIATED FILTER ELEMENTS MILLER-CRUZ, EKANDRA S. 1773 Non-Final OA Oct 18, 2023
18373061 FUEL CELL CHEMICAL FILTER MONITORING SYSTEM AND METHODS APICELLA, KARIE O 1725 Non-Final OA Sep 26, 2023
18546061 FUSION PROTEINS COMPRISING A PROTEIN WITH PHASE BEHAVIOR ROBINSON, HOPE A 1652 Non-Final OA Aug 10, 2023
18205134 VENT WITH INVERSION PROTECTION CLEMENTE, ROBERT ARTHUR 1773 Non-Final OA Jun 02, 2023
18039121 END CAPS AND PLEAT GUIDES FOR FILTRATION HE, QIANPING 1776 Non-Final OA May 26, 2023
18036732 METHODS OF OLIGONUCLEOTIDE-BASED AFFINITY CHROMATOGRAPHY BERRY, LAYLA D 1693 Final Rejection May 12, 2023
18034311 CLIP AND NUT ASSEMBLY WONG, JOCK M 3675 Non-Final OA Apr 27, 2023
18139865 AIR FILTRATION MONITORING SYSTEM PREGLER, SHARON 1772 Non-Final OA Apr 26, 2023
18022013 ARTICLE INCLUDING FILTRATION MEDIA AND FLUOROPOLYMER AND METHODS OF MAKING AND USING SAME HUANG, RYAN 1777 Final Rejection Feb 17, 2023
18016258 SYSTEM AND METHOD FOR DEAERATION MCKENZIE, THOMAS B 1776 Final Rejection Jan 13, 2023
17789292 VEHICLE FUEL MONITORING SYSTEM AND METHODS PAIGE, TYLER D 3664 Final Rejection Jan 04, 2023
17981840 SYSTEM COMPRISING A CONNECTOR FOR COUPLING TO A FLUID FILTER ELEMENT, FLUID FILTER ELEMENT, AND PROCESS FOR PRODUCING SAME MCKENZIE, THOMAS B 1776 Non-Final OA Nov 07, 2022
17981888 AIR FILTER ELEMENT AND METHOD FOR PRODUCING SAME MCKENZIE, THOMAS B 1776 Final Rejection Nov 07, 2022
17973657 CHEMICAL FILTER ASSEMBLIES ANBACHT, BRIT ELIZA 1776 Non-Final OA Oct 26, 2022
17914020 ADSORBENT FILTER ASSEMBLY FOR AN ELECTRONICS ENCLOSURE SLAUGOVSKY, RACHEL MARIE 1776 Final Rejection Sep 23, 2022
17780627 SYSTEMS AND METHODS FOR SEPARATING PARTICLES IN FLUIDS VARMA, AKASH K 1773 Non-Final OA May 27, 2022
17776799 FILTRATION COMPOSITES MCCULLOUGH, ERIC J. 1773 Non-Final OA May 13, 2022
17742956 EPOXIDE-ACTIVATED SUBSTRATES AND HYDROPHOBIC INTERACTION CHROMATOGRAPHY MADE THEREFROM FOR POLYNUCLEOTIDE PURIFICATION FEELY, MICHAEL J 1766 Non-Final OA May 12, 2022
17767258 FILTER MEDIA LAYERS INCLUDING MIXED DIAMETER FINE FIBERS MCKENZIE, THOMAS B 1776 Final Rejection Apr 07, 2022
17587220 CYCLIC FLOW APPARATUS KASTURE, DNYANESH G 3746 Final Rejection Jan 28, 2022
17429223 FILTER SEAL ASSEMBLY AND SYSTEM HOBSON, STEPHEN 1776 Non-Final OA Aug 06, 2021
17266543 FILTER ELEMENTS AND SYSTEMS WITH DATA CONVEYANCE FEATURES NGHIEM, MICHAEL P 2857 Final Rejection Feb 05, 2021
16970102 SUBSTRATE TREATMENTS MCCULLOUGH, ERIC J. 1773 Final Rejection Aug 14, 2020

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