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

According to USPTO PatentsView (2015–2025 granted utility patents), Mitsubishi Hitachi Power Systems, Ltd. ranks #712 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 Mitsubishi Hitachi Power Systems, Ltd. hold?

Mitsubishi Hitachi Power Systems, Ltd. holds 638 US utility patents granted between 2015 and 2021, spanning 145 technology areas.

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

Mitsubishi Hitachi Power Systems, Ltd. has an Innovation Score of 52.6 out of 100 (top 10% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Mitsubishi Hitachi Power Systems, Ltd.'s recent grant velocity is -72% 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 Mitsubishi Hitachi Power Systems, Ltd.'s patents?

Mitsubishi Hitachi Power Systems, Ltd.'s patents average 8.8 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 Mitsubishi Hitachi Power 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

Mitsubishi Hitachi Power Systems, Ltd.

Q: What technology areas does Mitsubishi Hitachi Power Systems, Ltd. focus on?

Mitsubishi Hitachi Power Systems, Ltd.'s top technology area is F05D (Indexing Scheme FOR Aspects Relating TO Non-positive-displacement Machines OR Engines, Gas-turbines OR Jet-propulsion Plants) with 275 patents. Grants appear in 145 CPC subclasses total.

USPTO PatentsView assignee record - 638 granted patents across 145 technology areas, recorded in grant years 2015–2021. 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: F05D (Indexing Scheme FOR Aspects Relating TO Non-positive-displacement Machines OR Engines, Gas-turbines OR Jet-propulsion Plants).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Mitsubishi ranks #712 of 49,997 tracked US assignees by granted-patent volume, with 638 patents across 145 technology areas.

#712
of 49,997 US assignees by volume: Top 10%
by Innovation Score (52.6/100): 8.8
avg claims per patent: -72%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R712 · Foreign Corporation #712 · 638 grants

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

GRANTS-MID 638 grants
TOP-DECILE #712/49,997
PHOTO-FINISH Lincoln Global
CPC-WIDE F05D · 145 areas
INNOV-PAR 52.6/100
CLAIMS-PAR 8.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -72% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Lincoln Global, 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.

Qualcomm Incorporated · highest

85
Accuray Incorporated · near

53
Biedermann & KG · near

53
Ecosense Lighting · near

53
Mitsubishi Hitachi… · this assignee

53
SolarCity · near

53
3D Lighting… · lowest

7

What this shows Mitsubishi's Innovation Score is 52.6/100 (top 10% 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 Mitsubishi's grant cadence moved

Between 2020–2024, Mitsubishi Hitachi Power Systems, Ltd. received 139 grants versus 499 in 2015–2019 (-72% equal-window velocity, below median growth). Across complete PatentsView years, output peaked in 2020 at 138 grants and bottomed in 2021 at 1. Lead class F05D accounts for 43.1% of the portfolio across 145 subclasses. Volume neighbours: Mitsubishi Materials Corporation (#708) and Schlage Lock Company LLC (#716).

Mitsubishi Materi…

640
S C Johnson & SON

640
MANN+Hummel

639
Lincoln Global

638
Mitsubishi Hitach… ◀

638
Cooper

637
Industry-universi…

637
Ohio State Innova…

637
Schlage Lock

637

What this shows Mitsubishi holds 638 patents at rank #712, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Mitsubishi

By rank, the assignees closest to #712 in granted patent volume.

Leaders in F05D (Indexing Scheme FOR Aspects Relating TO Non-positive-disp…)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Mitsubishi, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (53 here).

Biedermann Technologies GMBH & Co. KG 53 SolarCity Corporation 53 Accuray Incorporated 53 Ecosense Lighting Inc. 53

Similar claim depth

Nearest assignees by average claims per patent (8.8 here).

Johnson & Johnson Consumer Inc. 8.8 avg Ocean University OF China 8.8 avg Guangzhou Institute OF Energy Conversion, Chinese Academy OF Sciences 8.8 avg Exedy Corporation 8.8 avg

Mitsubishi's Innovation Score vs. every tracked assignee

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

53 Top 10% higher than 90% 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 · 2015–2021

Grants by year

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

View data table

Mitsubishi Hitachi Power Systems, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	78	12.2%
2016	94	14.7%
2017	111	17.4%
2018	92	14.4%
2019	124	19.4%
2020	138	21.6%
2021	1	0.2%

Which technologies does Mitsubishi Hitachi Power Systems, Ltd. patent most?

F05D - Indexing Scheme FOR Aspects Relating TO Non-positive-displacement Machines OR Engines, Gas-turbines OR Jet-propulsion Plants 275

F01D - Non-positive Displacement Machines OR Engines, e.g. Steam Turbines 272

F02C - Gas-turbine PLANTS; AIR Intakes FOR Jet-propulsion PLANTS; Controlling Fuel Supply IN Air-breathing Jet-propulsion Plants 198

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 109

F23R - Generating Combustion Products OF High Pressure OR High Velocity, e.g. Gas-turbine Combustion Chambers 97

F01K - Steam Engine PLANTS; Steam ACCUMULATORS; Engine Plants NOT Otherwise Provided FOR; Engines Using Special Working Fluids OR Cycles 81

B01D - Separation 61

Y02T - Climate Change Mitigation Technologies Related TO Transportation 36

F23D - Burners 35

Y10T - Technical Subjects Covered BY Former US Classification 35

F22B - Methods OF Steam GENERATION; Steam Boilers 32

F16J - Pistons ; CYLINDERS; Sealings 31

C22C - Alloys 29

F23J - Removal OR Treatment OF Combustion Products OR Combustion RESIDUES; Flues 29

F04D - Non-positive-displacement Pumps 28

Top 15 of 145 technology areas

Where it ranks

Overall rank by patents

#712

of 49,997 tracked assignees

Innovation Score

52.6 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

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

Mitsubishi Hitachi Power Systems, Ltd.'s lead technology class is F05D (Indexing Scheme FOR Aspects Relating TO Non-positive-displacement Machines OR Engines, Gas-turbines OR Jet-propulsion Plants), 43.1% of its portfolio - see every assignee active in that class. Explore F05D
Ranked #712 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Mitsubishi Hitachi Power Systems, Ltd. against Mitsubishi Materials Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 52.6/100 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.