Donaldson Company, Inc.
74 live US trademarks, filing since 1947.
Marks held on the register, by filing date. 2026 is year to date.
A multi-class mark counts once per class. Rank shown where the owner is in the class's top 50.
What Donaldson Company, Inc. filed most recently.
| Mark | Class | Filed | Basis | Status | Serial |
|---|---|---|---|---|---|
| STRATOS | 11 | Oct 3, 2025 | — | published | 99427305 |
| ARMORSEAL | 7, 11, 17 | Sep 17, 2025 | — | published | 99397685 |
| ALPHA-PORE | 7, 9, 10, 11 | Aug 27, 2025 | — | published | 99360817 |
| SOLARIS BIOTECH | 6, 7, 9, 11, 42 | Sep 16, 2024 | — | pending | 98753184 |
| PUREXA | 9, 11 | Sep 16, 2024 | — | registered Apr 15 | 98753304 |
| DURAMAX | 11 | Jul 24, 2024 | — | registered Apr 15 | 98664825 |
| BURAN | 11 | Jul 17, 2024 | — | published | 98653296 |
| ALPHA-WEB | 7 | Oct 12, 2021 | — | registered Sep 10 | 97069729 |
| DONALDSON | 1, 6, 7, 9, 10, 11, 12, 19, 20, 42 | Jul 7, 2021 | — | registered May 7 | 90815594 |
| ISOTAG | 1, 5 | Jul 2, 2021 | — | registered Dec 13 | 90809149 |
A filing missed by the due date enters a six-month grace period, then the registration cancels.
About Donaldson Company, Inc. trademarks.
How many trademarks does Donaldson Company, Inc. have?
74 live US trademarks as of October 23, 2026: 69 registered and 5 pending applications. None have been filed in 2026 so far.
What does Donaldson Company, Inc. sell, according to its trademarks?
Mostly machinery (Class 7, 39 live marks). Also appliances & lighting (Class 11) and electronics & software (Class 9).
Who owns the DONALDSON trademark?
DONALDSON is owned by Donaldson Company, Inc.. It was registered on September 13, 1949 (Reg. No. 0514998) and is live. The same owner holds 73 other live US marks.
When did Donaldson Company, Inc. first file a trademark?
Its oldest live US filing dates from 1947: DONALDSON, filed July 14, 1947.
Know the morning after Donaldson Company, Inc. files.
Watch this company in Thorgate and get an alert for every new application, registration, publication and lapse, with the opposition deadline already worked out. Or monitor your own marks for conflicts with theirs.
Data: USPTO trademark bulk files, processed nightly by Thorgate. Last rebuilt October 23, 2026. Counts cover the US federal register only, not state or foreign marks. Owner names are shown as recorded by the USPTO. This page reports public-record facts and dates and is not legal advice. For the official record of any mark, follow its serial number to USPTO TSDR.