Company Analysis
Sign in

Donaldson Company, Inc. (DCI)

NYSE: DCI · Industrial & Commercial Fans & Blowers & Air Purifing Equip · Bloomington, MN · filing with the SEC since 1994
Full chart Alerts Compare
Grade6.1
◀ Past 7.6● Present 6.7▶ Future 3.8
OverviewBusinessFinancialsGradeForecastSentimentOwnershipPeopleFilingsPatents Chart

Patents

US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026

1,411 patents granted to the 2 names below, as the owner printed on each patent when it was granted. A later sale, a lapse or an expiry is not read, so this is what was granted to Donaldson Company, Inc.’s names, not what it holds today.

Patents granted
1,411
1,290 utility, 111 design, 10 reissue, 1976 to Dec 31, 2025
Granted in 2025
75
Against 66 in 2024 and 60 in 2023
Applications published
1,082
66 of them in 2025
Names they are printed under
2
its own name
By yearGrantedApplications published
'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
What they are aboutgrants since 2021
Environmental technology162
Chemical engineering86
Textile and paper machines8
Transport6
Measurement5
Mechanical elements4
Engines, pumps, turbines4
Electrical machinery, apparatus, energy3
Medical technology3
Biotechnology3
Food chemistry2
Surface technology, coating2
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name2 counted
Donaldson Company, Inc. its own name
US, as the owner printed on each patent
1,411 granted
457 published
Donaldson Company, Inc. its own name
named as the applicant on its applications, in US. 2 more under the same name are not counted (printed in MN)
0 granted
625 published
Names not counted (11)
Univercells Technologies SA
Most of its patents print BE; this name counts in CH. 0 granted and 27 published under it are not counted.
Medica S.P.A.
Most of its patents print US; this name counts in AE. 23 granted and 2 published under it are not counted.
Advanced Filtration Systems Inc.
Most of its patents print US; this name counts in AE. 14 granted and 8 published under it are not counted.
Medica S.P.A.
Most of its patents print US; this name counts in AE. 0 granted and 12 published under it are not counted.
Univercells Technologies SA
Most of its patents print BE; this name counts in CH. 11 granted and 0 published under it are not counted.
Donaldson Filtration Deutschland GmbH
Most of its patents print DE; this name counts in HK. 6 granted and 2 published under it are not counted.
Donaldson Filtration Deutschland GmbH
Most of its patents print DE; this name counts in HK. 0 granted and 8 published under it are not counted.
Advanced Filtration Systems Inc.
Most of its patents print US; this name counts in AE. 0 granted and 5 published under it are not counted.
Medica S.P.A.
Most of its patents print IT; this name counts in AE. 4 granted and 0 published under it are not counted.
Nippon Donaldson Ltd.
Most of its patents print JP; this name counts in CH. 2 granted and 0 published under it are not counted.
Medica S.P.A.
Most of its patents print IT; this name counts in AE. 1 granted and 0 published under it are not counted.
Newest grantseach row opens the USPTO’s own copy
GrantedPatentTitleFieldOwner as printed
Dec 30, 202512,512,129Gas replenishment component for an enclosureAudio-visual technologyDonaldson Company, Inc.
Nov 25, 2025D1,103,218Filter cartridgeDonaldson Company, Inc.
Nov 25, 202512,480,675Air filtration monitoring system with learning featuresEnvironmental technologyDonaldson Company, Inc.
Nov 25, 202512,478,899Maintenance of hydrodynamic separatorsChemical engineeringDonaldson Company, Inc.
Nov 18, 202512,473,851Dosing and mixing assemblies for exhaust aftertreatment systemEnvironmental technologyDonaldson Company, Inc.
Nov 11, 202512,465,881Air filter systems, filter bag assemblies, filter bags and methodsEnvironmental technologyDonaldson Company, Inc.
Nov 11, 202512,465,066System and method for filtering beveragesFood chemistryDonaldson Company, Inc.
Oct 21, 202512,447,431Air cleaner assemblies and methods of useEnvironmental technologyDonaldson Company, Inc.
Oct 21, 202512,447,430Assemblies; components and filter features thereof; and, methods of use and assemblyEnvironmental technologyDonaldson Company, Inc.
Oct 14, 202512,440,930Fume extractorMachine toolsDonaldson Company, Inc.
Newest applications publishedan application is a clue, never a plan
PublishedApplicationTitleFieldOwner as printed
Dec 25, 20252025/0387743FILTER ELEMENTS AND ASSEMBLIESEnvironmental technologyDonaldson Company, Inc.
Dec 25, 20252025/0387738COMPOSITE MEDIA FOR FUEL STREAMSChemical engineeringDonaldson Company, Inc.
Dec 18, 20252025/0383026Pressure Relief Assembly with DetentElectrical machinery, apparatus, energyDonaldson Company, Inc.
Dec 18, 20252025/0382563BIOPROCESSING SYSTEM AND METHODSBiotechnologyDonaldson Company, Inc.
Dec 18, 20252025/0381537LOW SHEAR TOROIDAL IMPELLERChemical engineeringDonaldson Company, Inc.
Nov 27, 20252025/0360444LIQUID FILTRATION MEDIA, FILTER ELEMENTS AND METHODSChemical engineeringDonaldson Company, Inc.
Nov 20, 20252025/0352927PLEATED FLUID FILTER ELEMENT AND METHODSChemical engineeringDonaldson Company, Inc.
Nov 13, 20252025/0345732FILTER HOUSING WITH DROP OUT CHAMBER AND METHODSEnvironmental technologyDonaldson Company, Inc.
Nov 6, 20252025/0339803FILTER ELEMENT WITH SEAL RECEIVEREnvironmental technologyDonaldson Company, Inc.
Nov 6, 20252025/0339802FILTER CARTRIDGES; AIR CLEANER ASSEMBLIES; HOUSINGS; FEATURES; COMPONENTS; AND, METHODSEnvironmental technologyDonaldson Company, Inc.
What it applied for, 2024 to 2025: Environmental technology 66 · Chemical engineering 60 · Biotechnology 6 · Electrical machinery, apparatus, energy 4 · Mechanical elements 4 · Textile and paper machines 3.

A patent is counted where the owner printed on it when it was granted carries the company’s own name, a former name, the name of a subsidiary its annual report lists, or its own name with a patent-holding phrase (Technology Licensing, Intellectual Property and the like), once the legal form, case and punctuation are set aside, and prints a country that name counts in. PatentsView’s data are published under the Creative Commons Attribution 4.0 licence. Source: PatentsView's granted patents and pre-grant publications, disambiguated, from the USPTO's Open Data Portal, through Dec 31, 2025, read Oct 27, 2026.

SI Assistanton DCI · research, not advice