Where does IHI Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), IHI Corporation ranks #476 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 IHI Corporation hold?

IHI Corporation holds 928 US utility patents granted between 2015 and 2025, spanning 248 technology areas.

What is IHI Corporation's Innovation Score?

IHI Corporation has an Innovation Score of 57.8 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%).

Is IHI Corporation's patent grant rate increasing or decreasing?

IHI Corporation's recent grant velocity is -22% 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 IHI Corporation's patents?

IHI Corporation's patents average 8.2 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 IHI Corporation 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

IHI Corporation

Q: What technology areas does IHI Corporation focus on?

IHI Corporation'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 281 patents, ranking #19 of 744 assignees active in that subclass. Grants appear in 248 CPC subclasses total.

USPTO PatentsView assignee record - 928 granted patents across 248 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: 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

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, IHI ranks #476 of 49,997 tracked US assignees by granted-patent volume, with 928 patents across 248 technology areas.

#476
of 49,997 US assignees by volume: Top 5%
by Innovation Score (57.8/100): 8.2
avg claims per patent: -22%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R476 · Foreign Corporation #476 · 928 grants

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

GRANTS-MID 928 grants
TOP-DECILE #476/49,997
PHOTO-FINISH Level 3 Communications
CPC-BROAD F05D · 248 areas
INNOV-PAR 57.8/100
CLAIMS-PAR 8.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -22% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Level 3 Communications, LLC (±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 IHI’s 57.8 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 23.6 pts (41%) Velocity 4.2 pts (7%) Breadth 25.0 pts (43%) Claim depth 4.9 pts (8%)

Qualcomm Incorporated · highest

85
Beijing Jingdong… · near

58
FUNDACIÓ Institut… · near

58
HYDRO-QUÉBEC · near

58
IHI · this assignee

58
U S Well Services · near

58
3D Lighting… · lowest

7

What this shows IHI's Innovation Score is 57.8/100 (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 IHI?

Each dot is one of IHI’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). IHI’s own 8.2 claims/patent is at or below the 15.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How IHI's grant cadence moved

Between 2020–2024, IHI Corporation received 390 grants versus 497 in 2015–2019 (-22% equal-window velocity, below median growth). Across complete PatentsView years, output peaked in 2019 at 131 grants and bottomed in 2023 at 51. Lead class F05D accounts for 30.3% of the portfolio across 248 subclasses. Volume neighbours: Agency FOR Science, Technology AND Research (#472) and Eaton Corporation (#480).

IHI's three-year grant acceleration

From 2019–2021 to 2022–2024, IHI Corporation moved from 319 to 202 grants (0.63x 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 #2,355. See the growth leaderboard.

Agency FOR Scienc…

939
Fujikura

933
Wacom

933
Lumileds

930
Level 3 Communica…

928
IHI ◀

928
Verily Life Scien…

926
Zeon

926
Eaton

924

What this shows IHI holds 928 patents at rank #476, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near IHI

By rank, the assignees closest to #476 in granted patent volume.

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

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for IHI, neither rank-band nor same-CPC leaders (those blocks stay above). In F05D (Indexing Scheme FOR Aspects Relating TO Non-positive-disp…), IHI ranks #19 of 744 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (58 here).

U.S. Well Services, LLC 58 HYDRO-QUÉBEC 58 FUNDACIÓ Institut DE Ciencies FOTÒNIQUES 58 Beijing Jingdong Zhenshi Information Technology Co., Ltd. 58

Similar claim depth

Nearest assignees by average claims per patent (8.2 here).

Hefei University of Technology 8.2 avg Purity (Xiamen) Sanitary Ware Co., Ltd 8.2 avg Callaway Golf Company 8.2 avg Dr. Ing. h.c. F. Porsche AG 8.2 avg

IHI's Innovation Score vs. every tracked assignee

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

58 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

IHI Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	64	6.9%
2016	91	9.8%
2017	109	11.7%
2018	102	11.0%
2019	131	14.1%
2020	104	11.2%
2021	84	9.1%
2022	77	8.3%
2023	51	5.5%
2024	74	8.0%
2025partial year	41	4.4%

Which technologies does IHI Corporation patent most?

F05D - Indexing Scheme FOR Aspects Relating TO Non-positive-displacement Machines OR Engines, Gas-turbines OR Jet-propulsion Plants 281

Y02T - Climate Change Mitigation Technologies Related TO Transportation 260

F01D - Non-positive Displacement Machines OR Engines, e.g. Steam Turbines 226

F02B - Internal-combustion Piston ENGINES; Combustion Engines IN General 167

F04D - Non-positive-displacement Pumps 143

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 125

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 99

F02C - Gas-turbine PLANTS; AIR Intakes FOR Jet-propulsion PLANTS; Controlling Fuel Supply IN Air-breathing Jet-propulsion Plants 98

F16C - SHAFTS; Flexible SHAFTS; Elements OR Crankshaft MECHANISMS; Rotary Bodies Other Than Gearing ELEMENTS; Bearings 86

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 61

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 45

B01D - Separation 43

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 42

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 41

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 36

Top 15 of 248 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

IHI Corporation's patent record in context - here's where to go next.

IHI Corporation's lead technology class is F05D (Indexing Scheme FOR Aspects Relating TO Non-positive-displacement Machines OR Engines, Gas-turbines OR Jet-propulsion Plants), 30.3% of its portfolio - see every assignee active in that class. Explore F05D
Ranked #476 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare IHI Corporation against Agency FOR Science, Technology AND Research, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 57.8/100 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.