USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Hitachi Energy Ltd

USPTO PatentsView assignee record - 210 granted patents across 71 technology areas, active 2023–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES).

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

Explore the portfolio See the ranking

210

Total patents granted

CPC technology areas

16.3

Avg claims per patent

5-year filing velocity

The verdict

Hitachi holds 210 US patents across 71 technology areas, rank #1,912 of 50,000 tracked assignees.

#1,912
of 50,000 US assignees by volume: Top 0.1%
by Innovation Score (73.3/100): 16.3
avg claims per patent

Portfolio overview

Hitachi Energy Ltd has been granted 210 US utility patents between 2023 and 2025, placing Hitachi Energy Ltd at rank #1,912 across all assignees tracked by PlainPatent. This portfolio spans 71 distinct Cooperative Patent Classification (CPC) subclasses, averaging 16.3 claims per patent with primary concentration in H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES). As a Foreign Corporation, Hitachi Energy Ltd is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Hitachi sits between Baylor College Of Medicine (210 patents, rank #1,908) and PHC Holdings Corporation (210 patents, rank #1,916) - the closest US assignees by grant volume. The composite Innovation Score of 73.3/100 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. Historical data spans 2023 through 2025, with 210 total grants over that period. Velocity comparisons require five years of historical filings to calibrate. 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. Hitachi Energy Ltd's 16.3 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 71 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Hitachi Energy Ltd against peers pursuing similar technology classes.

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.

Hitachi's Innovation Score vs. every tracked assignee

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

73 Top 1% higher than 99% 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 · 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%
2025	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

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Standard

Where it ranks

Overall rank by patents

#1,912

Across all 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?

Frequently Asked Questions

How many patents does Hitachi Energy Ltd hold?

Hitachi Energy Ltd holds 210 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

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. The company has filed patents in 71 CPC subclasses total.

Is Hitachi Energy Ltd's patent filing 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 falls within the standard range, providing solid legal coverage.

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.

How to use this portfolio

Hitachi's 210 grants land it in the top 0.1% 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 - Hitachi ranks #1,912 of 50,000. Top 50 holders
Most of this portfolio concentrates in H01F - see who else leads that technology area. H01F 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.