Where does Hitachi Energy Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hitachi Energy Ltd ranks #1,911 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 Energy Ltd hold?

Hitachi Energy Ltd holds 210 US utility patents granted between 2023 and 2025, spanning 71 technology areas.

What is Hitachi Energy Ltd's Innovation Score?

Hitachi Energy Ltd has an Innovation Score of 73.3 out of 100 (top 1% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Hitachi Energy Ltd's patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Hitachi Energy Ltd.

What does claim depth mean for Hitachi Energy Ltd's patents?

Hitachi Energy Ltd's patents average 16.3 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 Energy 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 Energy Ltd

Q: What technology areas does Hitachi Energy Ltd focus on?

Hitachi Energy Ltd's top technology area is H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties) with 52 patents. Grants appear in 71 CPC subclasses total.

USPTO PatentsView assignee record - 210 granted patents across 71 technology areas, recorded in grant years 2023–2025. 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: H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hitachi ranks #1,911 of 49,997 tracked US assignees by granted-patent volume, with 210 patents across 71 technology areas.

#1,911
of 49,997 US assignees by volume: Top 1%
by Innovation Score (73.3/100): 16.3
avg claims per patent

USPTO PatentsView assignee plate

Corpus R1911 · Foreign Corporation #1,911 · 210 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-STRONG · CLAIMS-RICH · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MID 210 grants
TOP-DECILE #1,911/49,997
PHOTO-FINISH Baylor College of…
CPC-WIDE H01F · 71 areas
INNOV-STRONG 73.3/100
CLAIMS-RICH 16.3 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2023–2025 · 3y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Baylor College of Medicine (±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.

Qualcomm Incorporated · highest

85
SK hynix · near

73
Beijing Bytedance… · near

73
L3Harris · near

73
ZF CV Systems… · near

73
Hitachi Energy · this assignee

73
3D Lighting… · lowest

7

What this shows Hitachi's Innovation Score is 73.3/100 (top 1% 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.

How Hitachi's grant cadence moved

Grant history spans 2023–2025. Across complete PatentsView years, output peaked in 2024 at 112 grants and bottomed in 2023 at 8. Lead class H01F accounts for 24.8% of the portfolio across 71 subclasses. Volume neighbours: Baylor College of Medicine (#1,908) and PHC Holdings Corporation (#1,916).

Hitachi's three-year grant acceleration

Hitachi Energy Ltd shows 120 grants in 2022–2024 against only 0 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.

Baylor College of…

210
CPS Technology Ho…

210
Dow Corning

210
Hitachi High-tech…

210
National Universi…

210
Okamura

210
Opentv

210
PHC Holdings

210
Hitachi Energy ◀

210

What this shows Hitachi holds 210 patents at rank #1,912, 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 #1,912 in granted patent volume.

Leaders in H01F (Magnets)

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).

Similar innovation score

Nearest assignees by Innovation Score (73 here).

ZF CV Systems Europe BV 73 L3Harris Technologies, Inc. 73 Beijing Bytedance Network Technology Co., Ltd. 73 SK hynix Inc. 73

Similar claim depth

Nearest assignees by average claims per patent (16.3 here).

3D Systems, Inc. 16.3 avg MannKind Corporation 16.3 avg ABL IP Holding LLC 16.3 avg Quanta Associates, L.P. 16.3 avg

Hitachi's Innovation Score vs. every tracked assignee

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

73 Top 1% higher than 99% 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 · 2023–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2023–2019 baseline. Full figures in the table below.

View data table

Hitachi Energy Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2023	8	3.8%
2024	112	53.3%
2025partial year	90	42.9%

Which technologies does Hitachi Energy Ltd patent most?

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 52

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 42

H01H - Electric SWITCHES; RELAYS; SELECTORS; Emergency Protective Devices 31

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 29

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 25

Y04S - Systems Integrating Technologies Related TO Power Network Operation, Communication OR Information Technologies FOR Improving THE Electrical Power Generation, Transmission, Distribution, Management OR Usage, i.e. Smart Grids 22

H01B - CABLES; CONDUCTORS; INSULATORS; Selection OF Materials FOR Their Conductive, Insulating OR Dielectric Properties 22

H02H - Emergency Protective Circuit Arrangements 22

H10D - Inorganic Electric Semiconductor Devices 15

H01L - Semiconductor Devices NOT Covered BY Class H10 15

G06F - Electric Digital Data Processing 14

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 14

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 13

H02G - Installation OF Electric Cables OR Lines, OR OF Combined Optical AND Electric Cables OR Lines 11

G06Q - Information AND Communication Technology [ICT] Specially Adapted FOR Administrative, Commercial, Financial, Managerial OR Supervisory PURPOSES; Systems OR Methods Specially Adapted FOR Administrative, Commercial, Financial, Managerial OR Supervisory Purposes, NOT Otherwise Provided FOR 9

Top 15 of 71 technology areas

Where it ranks

Overall rank by patents

#1,911

of 49,997 tracked assignees

Innovation Score

73.3 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Hitachi Energy Ltd's patent record in context - here's where to go next.

Hitachi Energy Ltd's lead technology class is H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties), 24.8% of its portfolio - see every assignee active in that class. Explore H01F
Ranked #1,911 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hitachi Energy Ltd against Baylor College of Medicine, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 73.3/100 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.