USPTO 2015–2025 USPTO PatentsView US Corporation

Donaldson Company, Inc.

USPTO PatentsView assignee record - 597 granted patents across 85 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B01D (SEPARATION).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

597

Total patents granted

CPC technology areas

19.4

Avg claims per patent

+50%

5-year filing velocity

The verdict

Donaldson holds 597 US patents across 85 technology areas, rank #768 of 50,000 tracked assignees.

#768
of 50,000 US assignees by volume: Top 1%
by Innovation Score (65.4/100): 19.4
avg claims per patent: +50%
filing velocity, last 5 yrs

Portfolio overview

Donaldson Company, Inc. has been granted 597 US utility patents between 2015 and 2025, placing Donaldson Company, Inc. at rank #768 across all assignees tracked by PlainPatent. This portfolio spans 85 distinct Cooperative Patent Classification (CPC) subclasses, averaging 19.4 claims per patent with primary concentration in B01D (SEPARATION). As a US Corporation, Donaldson Company, Inc. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Donaldson sits between Sunpower Corporation (601 patents, rank #764) and Sanyo Electric Co., Ltd. (594 patents, rank #772) - the closest US assignees by grant volume. The composite Innovation Score of 65.4/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 358 grants, compared with 239 in the 2015–2019 window, a +50% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The US Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Donaldson Company, Inc.'s 19.4 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 85 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Donaldson Company, Inc. against peers pursuing similar technology classes.

Sunpower

601
Vitesco

601
TDK Taiwan

598
Bio-rad Laborator…

597
Panasonic Liquid…

597
Donaldson ◀

597
Hunter Fan

594
Red Hat Israel

594
Sanyo Electric

594

What this shows Donaldson holds 597 patents at rank #768, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Donaldson

By rank, the assignees closest to #768 in granted patent volume.

Leaders in B01D (Separation)

Other assignees with the most granted patents in Donaldson's primary technology class.

Donaldson's Innovation Score vs. every tracked assignee

Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)

65 Top 1% higher than 99% of 50,000 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Donaldson Company, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	45	7.5%
2016	47	7.9%
2017	46	7.7%
2018	40	6.7%
2019	61	10.2%
2020	65	10.9%
2021	53	8.9%
2022	52	8.7%
2023	60	10.1%
2024	67	11.2%
2025	61	10.2%

Which technologies does Donaldson Company, Inc. patent most?

B01D - SEPARATION 515

F02M - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF 106

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 98

F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES 37

B01F - MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING 27

Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION 25

D04H - MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL ; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION 20

Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS 17

F01M - LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING 16

D01D - MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS 15

B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 14

F02C - GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS 14

Y02A - TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE 13

D01F - CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS 13

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 10

Top 15 of 85 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Standard

Velocity Accelerating

Where it ranks

Overall rank by patents

#768

Across all tracked assignees

Innovation Score

65.4 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Donaldson Company, Inc. hold?

Donaldson Company, Inc. holds 597 US granted patents filed between 2015 and 2025, spanning 85 technology areas.

What is Donaldson Company, Inc.'s Innovation Score?

Donaldson Company, Inc. has an Innovation Score of 65.4 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Donaldson Company, Inc. focus on?

Donaldson Company, Inc.'s top technology area is B01D (SEPARATION) with 515 patents. The company has filed patents in 85 CPC subclasses total.

Is Donaldson Company, Inc.'s patent filing rate increasing or decreasing?

Donaldson Company, Inc.'s recent filing velocity is +50% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Donaldson Company, Inc.'s patents?

Donaldson Company, Inc.'s patents average 19.4 claims each. This falls within the standard range, providing solid legal coverage.

How is the Donaldson Company, Inc. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

How to use this portfolio

Donaldson's 597 grants land it in the top 1% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Donaldson ranks #768 of 50,000. Top 50 holders
Most of this portfolio concentrates in B01D - see who else leads that technology area. B01D leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.