USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Mahle Filter Systems Japan Corporation

USPTO PatentsView assignee record - 55 granted patents across 47 technology areas, active 2015–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F02M (SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

8.3

Avg claims per patent

-59%

5-year filing velocity

The verdict

Mahle holds 55 US patents across 47 technology areas, rank #6,172 of 50,000 tracked assignees.

#6,172
of 50,000 US assignees by volume: Top 24%
by Innovation Score (45.0/100): 8.3
avg claims per patent: -59%
filing velocity, last 5 yrs

Portfolio overview

Mahle Filter Systems Japan Corporation has been granted 55 US utility patents between 2015 and 2024, placing Mahle Filter Systems Japan Corporation at rank #6,172 across all assignees tracked by PlainPatent. This portfolio spans 47 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.3 claims per patent with primary concentration in F02M (SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF). As a Foreign Corporation, Mahle Filter Systems Japan Corporation is one of the more focused assignees in the PatentsView dataset. By volume, Mahle sits between MAG Aerospace Industries, Llc (55 patents, rank #6,168) and Musashi Seimitsu Industry Co., Ltd. (55 patents, rank #6,176) - the closest US assignees by grant volume. The composite Innovation Score of 45.0/100 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 16 grants, compared with 39 in the 2015–2019 window, a -59% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The Foreign 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. Mahle Filter Systems Japan Corporation's 8.3 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 47 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Mahle Filter Systems Japan Corporation against peers pursuing similar technology classes.

MAG Aerospace Ind…

55
MAN Truck & Bus SE

55
Medicrea Internat…

55
Microport Orthope…

55
Metso Minerals

55
Micro Focus Softw…

55
Minimax Viking Re…

55
Musashi Seimitsu…

55
Mahle Filter Syst… ◀

55

What this shows Mahle holds 55 patents at rank #6,172, 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 #6,172 in granted patent volume.

Leaders in F02M (Supplying Combustion Engines IN General WITH Combustible…)

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, filing velocity, technology breadth, and claim depth (0–100)

45 Top 24% higher than 76% 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 · 2015–2024

Grants by year

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

View data table

Mahle Filter Systems Japan Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	6	10.9%
2016	3	5.5%
2017	3	5.5%
2018	11	20.0%
2019	16	29.1%
2020	7	12.7%
2021	2	3.6%
2022	4	7.3%
2023	1	1.8%
2024	2	3.6%

Which technologies does Mahle Filter Systems Japan Corporation patent most?

F02M - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF 22

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

F28D - HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 12

B01D - SEPARATION 11

F28F - DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 10

Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION 7

F02B - INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 7

F02F - CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES 5

F02D - CONTROLLING COMBUSTION ENGINES 5

F04C - ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS ; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS 4

F16J - PISTONS ; CYLINDERS; SEALINGS 4

F01P - COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES 3

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 3

B23K - SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 3

F04D - NON-POSITIVE-DISPLACEMENT PUMPS 3

Top 15 of 47 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#6,172

Across all tracked assignees

Innovation Score

45.0 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 Mahle Filter Systems Japan Corporation hold?

Mahle Filter Systems Japan Corporation holds 55 US granted patents filed between 2015 and 2024, spanning 47 technology areas.

What is Mahle Filter Systems Japan Corporation's Innovation Score?

Mahle Filter Systems Japan Corporation has an Innovation Score of 45.0 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Mahle Filter Systems Japan Corporation focus on?

Mahle Filter Systems Japan Corporation's top technology area is F02M (SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF) with 22 patents. The company has filed patents in 47 CPC subclasses total.

Is Mahle Filter Systems Japan Corporation's patent filing rate increasing or decreasing?

Mahle Filter Systems Japan Corporation's recent filing velocity is -59% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Mahle Filter Systems Japan Corporation's patents?

Mahle Filter Systems Japan Corporation's patents average 8.3 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Mahle Filter Systems Japan Corporation 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

Mahle's 55 grants land it in the top 24% 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 - Mahle ranks #6,172 of 50,000. Top 50 holders
Most of this portfolio concentrates in F02M - see who else leads that technology area. F02M 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.