USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Aisan Kogyo Kabushiki Kaisha

USPTO PatentsView assignee record - 346 granted patents across 53 technology areas, active 2015–2025. 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

346

Total patents granted

CPC technology areas

8.5

Avg claims per patent

-12%

5-year filing velocity

The verdict

Aisan holds 346 US patents across 53 technology areas, rank #1,227 of 50,000 tracked assignees.

#1,227
of 50,000 US assignees by volume: Top 8%
by Innovation Score (54.5/100): 8.5
avg claims per patent: -12%
filing velocity, last 5 yrs

Portfolio overview

Aisan Kogyo Kabushiki Kaisha has been granted 346 US utility patents between 2015 and 2025, placing Aisan Kogyo Kabushiki Kaisha at rank #1,227 across all assignees tracked by PlainPatent. This portfolio spans 53 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.5 claims per patent with primary concentration in F02M (SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF). As a Foreign Corporation, Aisan Kogyo Kabushiki Kaisha is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Aisan sits between SK On Co., Ltd. (348 patents, rank #1,223) and Vanguard International Semiconductor Corporation (345 patents, rank #1,231) - the closest US assignees by grant volume. The composite Innovation Score of 54.5/100 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 162 grants, compared with 184 in the 2015–2019 window, a -12% 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. Aisan Kogyo Kabushiki Kaisha's 8.5 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 53 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Aisan Kogyo Kabushiki Kaisha against peers pursuing similar technology classes.

SK On

348
Janssen Biotech

347
King Slide Techno…

347
Tusimple

347
Cognex

346
Iucf-hyu (Industr…

346
Aisan Kogyo ◀

346
Endress+Hauser Fl…

345
Vanguard Internat…

345

What this shows Aisan holds 346 patents at rank #1,227, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Aisan

By rank, the assignees closest to #1,227 in granted patent volume.

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

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

Aisan's Innovation Score vs. every tracked assignee

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

55 Top 8% higher than 92% 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

Aisan Kogyo Kabushiki Kaisha patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	26	7.5%
2016	37	10.7%
2017	49	14.2%
2018	43	12.4%
2019	29	8.4%
2020	38	11.0%
2021	47	13.6%
2022	34	9.8%
2023	23	6.6%
2024	15	4.3%
2025	5	1.4%

Which technologies does Aisan Kogyo Kabushiki Kaisha patent most?

F02M - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF 245

F02D - CONTROLLING COMBUSTION ENGINES 110

Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION 74

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 59

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING 50

B01D - SEPARATION 38

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 21

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 21

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 17

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

G01F - MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME 16

H02K - DYNAMO-ELECTRIC MACHINES 16

F04D - NON-POSITIVE-DISPLACEMENT PUMPS 14

F02B - INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 10

G05D - SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 8

Top 15 of 53 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#1,227

Across all tracked assignees

Innovation Score

54.5 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 Aisan Kogyo Kabushiki Kaisha hold?

Aisan Kogyo Kabushiki Kaisha holds 346 US granted patents filed between 2015 and 2025, spanning 53 technology areas.

What is Aisan Kogyo Kabushiki Kaisha's Innovation Score?

Aisan Kogyo Kabushiki Kaisha has an Innovation Score of 54.5 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Aisan Kogyo Kabushiki Kaisha focus on?

Aisan Kogyo Kabushiki Kaisha's top technology area is F02M (SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF) with 245 patents. The company has filed patents in 53 CPC subclasses total.

Is Aisan Kogyo Kabushiki Kaisha's patent filing rate increasing or decreasing?

Aisan Kogyo Kabushiki Kaisha's recent filing velocity is -12% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Aisan Kogyo Kabushiki Kaisha's patents?

Aisan Kogyo Kabushiki Kaisha's patents average 8.5 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Aisan Kogyo Kabushiki Kaisha 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

Aisan's 346 grants land it in the top 8% 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 - Aisan ranks #1,227 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.