Where does Mahle Donghyun Filter Systems Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Mahle Donghyun Filter Systems Co., Ltd. ranks #48,534 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Mahle Donghyun Filter Systems Co., Ltd. hold?

Mahle Donghyun Filter Systems Co., Ltd. holds 5 US utility patents granted between 2020 and 2023, spanning 7 technology areas.

What is Mahle Donghyun Filter Systems Co., Ltd.'s Innovation Score?

Mahle Donghyun Filter Systems Co., Ltd. has an Innovation Score of 30.6 out of 100 (35th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Mahle Donghyun Filter Systems Co., Ltd. focus on?

Mahle Donghyun Filter Systems Co., Ltd.'s top technology area is B01D (Separation) with 4 patents, ranking #1,134 of 3,536 assignees active in that subclass. Grants appear in 7 CPC subclasses total.

Is Mahle Donghyun Filter Systems Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Mahle Donghyun Filter Systems Co., Ltd..

What does claim depth mean for Mahle Donghyun Filter Systems Co., Ltd.'s patents?

Mahle Donghyun Filter Systems Co., Ltd.'s patents average 17.6 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Mahle Donghyun Filter Systems Co., Ltd. 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Mahle Donghyun Filter Systems Co., Ltd.

USPTO PatentsView assignee record - 5 granted patents across 7 technology areas, recorded in grant years 2020–2023. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: B01D (Separation).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Mahle ranks #48,534 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 7 technology areas.

#48,534
of 49,997 US assignees by volume: 35th percentile
by Innovation Score (30.6/100): 17.6
avg claims per patent

USPTO PatentsView assignee plate

Corpus R48534 · Foreign Corporation #48,534 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 5 grants
BOTTOM-DECILE #48,534/49,997
PHOTO-FINISH Magnetic Insight
CPC-NARROW B01D · 7 areas
INNOV-THIN 30.6/100
CLAIMS-RICH 17.6 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2020–2023 · 4y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Magnetic Insight, Inc. (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Mahle’s 30.6 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 6.2 pts (20%) Velocity 4.4 pts (14%) Breadth 9.4 pts (31%) Claim depth 10.6 pts (35%)

Qualcomm Incorporated · highest

85
Mahle Donghyun… · this assignee

31
3D Lighting… · lowest

7

What this shows Mahle's Innovation Score is 30.6/100 (35th percentile of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Mahle?

Each dot is one of Mahle’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Mahle’s own 17.6 claims/patent is ABOVE the 17.0 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

Mahle vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Mahle's grants concentrate

Mahle Donghyun Filter Systems Co., Ltd. is a focused PatentsView assignee: 7 CPC subclasses with 80% of grants classified under B01D (Separation). Peak complete grant year is 2020 (2 grants) versus a trough of 1 in 2021. By volume, Mahle sits between Magnetic Insight, Inc. and Mango Leaf and Company Inc..

Mahle's three-year grant acceleration

Mahle Donghyun Filter Systems Co., Ltd. shows 2 grants in 2022–2024 against only 3 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Magnetic Insight

5
Magni-power

5
Magnum Energy Sol…

5
Magnum Piering

5
Main St Group

5
Majestic-12

5
Mammoth Bioscienc…

5
Mango Leaf and

5
Mahle Donghyun Fi… ◀

5

What this shows Mahle holds 5 patents at rank #48,750, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Mahle

By rank, the assignees closest to #48,750 in granted patent volume.

Leaders in B01D (Separation)

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

Mahle's Innovation Score vs. every tracked assignee

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

31 35th percentile higher than 35% of 49,997 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 · 2020–2023

Grants by year

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

View data table

Mahle Donghyun Filter Systems Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	2	40.0%
2021	1	20.0%
2023	2	40.0%

Which technologies does Mahle Donghyun Filter Systems Co., Ltd. patent most?

B01D - Separation 4

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 2

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 2

F01M - Lubricating OF Machines OR Engines IN GENERAL; Lubricating Internal Combustion ENGINES; Crankcase Ventilating 2

B60K - Arrangement OR Mounting OF Propulsion Units OR OF Transmissions IN VEHICLES; Arrangement OR Mounting OF Plural Diverse Prime-movers IN VEHICLES; Auxiliary Drives FOR VEHICLES; Instrumentation OR Dashboards FOR VEHICLES; Arrangements IN Connection With Cooling, AIR Intake, GAS Exhaust OR Fuel Supply 1

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

B60L - Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic Suspension OR Levitation FOR VEHICLES; Monitoring Operating Variables OF Electrically-propelled Vehicl 1

Top 7 of 7 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Mahle Donghyun Filter Systems Co., Ltd.'s patent record in context - here's where to go next.

Mahle Donghyun Filter Systems Co., Ltd.'s lead technology class is B01D (Separation), 80% of its portfolio - see every assignee active in that class. Explore B01D
Ranked #48,534 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Mahle Donghyun Filter Systems Co., Ltd. against Magnetic Insight, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 30.6/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

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

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 by PlainPatent , US Patent Intelligence Editorial Process · 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.