Where does Hitachi Automotive Systems, Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hitachi Automotive Systems, Ltd. ranks #245 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 Hitachi Automotive Systems, Ltd. hold?

Hitachi Automotive Systems, Ltd. holds 1,718 US utility patents granted between 2015 and 2025, spanning 156 technology areas.

What is Hitachi Automotive Systems, Ltd.'s Innovation Score?

Hitachi Automotive Systems, Ltd. has an Innovation Score of 57.3 out of 100 (top 5% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Hitachi Automotive Systems, Ltd. focus on?

Hitachi Automotive Systems, Ltd.'s top technology area is Y02T (Climate Change Mitigation Technologies Related TO Transportation) with 315 patents, ranking #37 of 2,877 assignees active in that subclass. Grants appear in 156 CPC subclasses total.

Is Hitachi Automotive Systems, Ltd.'s patent grant rate increasing or decreasing?

Hitachi Automotive Systems, Ltd.'s recent grant velocity is -54% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Hitachi Automotive Systems, Ltd.'s patents?

Hitachi Automotive Systems, Ltd.'s patents average 10.6 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 Hitachi Automotive Systems, 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

Hitachi Automotive Systems, Ltd.

USPTO PatentsView assignee record - 1,718 granted patents across 156 technology areas, recorded in grant years 2015–2025. 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: Y02T (Climate Change Mitigation Technologies Related TO Transportation).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hitachi ranks #245 of 49,997 tracked US assignees by granted-patent volume, with 1,718 patents across 156 technology areas.

#245
of 49,997 US assignees by volume: Top 5%
by Innovation Score (57.3/100): 10.6
avg claims per patent: -54%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R245 · Foreign Corporation #245 · 1,718 grants

GRANTS-LARGE · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-LARGE 1.7K grants
TOP-DECILE #245/49,997
PHOTO-FINISH Xilinx
CPC-WIDE Y02T · 156 areas
INNOV-PAR 57.3/100
CLAIMS-PAR 10.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -54% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Xilinx, 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 Hitachi’s 57.3 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 25.7 pts (45%) Velocity 0.1 pts (0%) Breadth 25.0 pts (44%) Claim depth 6.4 pts (11%)

Qualcomm Incorporated · highest

85
GIESECKE+DEVRIENT… · near

57
Hitachi Automotive… · this assignee

57
Kunlunxin Technology… · near

57
Bauer Hockey · near

57
VIA · near

57
3D Lighting… · lowest

7

What this shows Hitachi's Innovation Score is 57.3/100 (top 5% 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 Hitachi?

Each dot is one of Hitachi’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). Hitachi’s own 10.6 claims/patent is at or below the 16.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Hitachi's grant cadence moved

Between 2020–2024, Hitachi Automotive Systems, Ltd. received 539 grants versus 1,178 in 2015–2019 (-54% equal-window velocity, below median growth). Across complete PatentsView years, output peaked in 2019 at 316 grants and bottomed in 2024 at 1. Lead class Y02T accounts for 18.3% of the portfolio across 156 subclasses. Volume neighbours: Northwestern University (#241) and Kawasaki Jukogyo Kabushiki Kaisha (#249).

Hitachi's three-year grant acceleration

From 2019–2021 to 2022–2024, Hitachi Automotive Systems, Ltd. moved from 837 to 18 grants (0.02x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #3,265. See the growth leaderboard.

Northwestern Univ…

1,734
Globus Medical

1,728
Merck Patent

1,728
THE Johns Hopkins…

1,727
Xilinx

1,718
Hitachi Automotiv… ◀

1,718
Wuhan China Star…

1,717
HTC

1,709
Kawasaki Jukogyo

1,705

What this shows Hitachi holds 1,718 patents at rank #245, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hitachi

By rank, the assignees closest to #245 in granted patent volume.

Leaders in Y02T (Climate Change Mitigation Technologies Related TO Transpo…)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Hitachi, neither rank-band nor same-CPC leaders (those blocks stay above). In Y02T (Climate Change Mitigation Technologies Related TO Transpo…), Hitachi ranks #37 of 2,877 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (57 here).

Kunlunxin Technology (BEIJING) Company Limited 57 VIA Technologies, Inc. 57 GIESECKE+DEVRIENT Currency Technology GMBH 57 Bauer Hockey LLC 57

Similar claim depth

Nearest assignees by average claims per patent (10.6 here).

Universite DE Paris Descartes 10.6 avg HongQiSheng Precision Electronics (QinHuangDao) Co., Ltd. 10.6 avg Luigi Lavazza S.p.A. 10.6 avg Acushnet Company 10.6 avg

Hitachi's Innovation Score vs. every tracked assignee

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

57 Top 5% higher than 95% 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 · 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

Hitachi Automotive Systems, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	187	10.9%
2016	206	12.0%
2017	241	14.0%
2018	228	13.3%
2019	316	18.4%
2020	296	17.2%
2021	225	13.1%
2022	15	0.9%
2023	2	0.1%
2024	1	0.1%
2025partial year	1	0.1%

Which technologies does Hitachi Automotive Systems, Ltd. patent most?

Y02T - Climate Change Mitigation Technologies Related TO Transportation 315

F02D - Controlling Combustion Engines 239

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 186

H02M - Apparatus FOR Conversion Between AC AND AC, Between AC AND DC, OR Between DC AND DC, AND FOR USE With Mains OR Similar Power Supply SYSTEMS; Conversion OF DC OR AC Input Power Into Surge Output POWER; Control OR Regulation Thereof 179

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 159

B60T - Vehicle Brake Control Systems OR Parts THEREOF; Brake Control Systems OR Parts Thereof, IN General ; Arrangement OF Braking Elements ON Vehicles IN GENERAL; Portable Devices FOR Preventing Unwanted Movement OF VEHICLES; Vehicle Modifications TO Facilitate Cooling OF Brakes 145

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 144

B60W - Conjoint Control OF Vehicle Sub-units OF Different Type OR Different FUNCTION; Control Systems Specially Adapted FOR Hybrid VEHICLES; Road Vehicle Drive Control Systems FOR Purposes NOT Related TO THE Control OF A Particular Sub-unit 143

B60R - Vehicles, Vehicle Fittings, OR Vehicle Parts, NOT Otherwise Provided FOR 139

H02P - Control OR Regulation OF Electric Motors, Electric Generators OR Dynamo-electric CONVERTERS; Controlling Transformers, Reactors OR Choke Coils 131

H02K - Dynamo-electric Machines 130

B62D - Motor VEHICLES; Trailers 123

G01F - Measuring Volume, Volume Flow, Mass Flow OR Liquid LEVEL; Metering BY Volume 118

H01L - Semiconductor Devices NOT Covered BY Class H10 117

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 111

Top 15 of 156 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

Hitachi Automotive Systems, Ltd.'s patent record in context - here's where to go next.

Hitachi Automotive Systems, Ltd.'s lead technology class is Y02T (Climate Change Mitigation Technologies Related TO Transportation), 18.3% of its portfolio - see every assignee active in that class. Explore Y02T
Ranked #245 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hitachi Automotive Systems, Ltd. against Northwestern University, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 57.3/100 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.