Where does Hitachi Construction Machinery Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hitachi Construction Machinery Co., Ltd. ranks #580 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 Construction Machinery Co., Ltd. hold?

Hitachi Construction Machinery Co., Ltd. holds 771 US utility patents granted between 2015 and 2025, spanning 107 technology areas.

What is Hitachi Construction Machinery Co., Ltd.'s Innovation Score?

Hitachi Construction Machinery Co., Ltd. has an Innovation Score of 57.1 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 Construction Machinery Co., Ltd. focus on?

Hitachi Construction Machinery Co., Ltd.'s top technology area is E02F (DREDGING; Soil-shifting) with 595 patents, ranking #3 of 348 assignees active in that subclass. Grants appear in 107 CPC subclasses total.

Is Hitachi Construction Machinery Co., Ltd.'s patent grant rate increasing or decreasing?

Hitachi Construction Machinery Co., Ltd.'s recent grant velocity is -3% 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 Construction Machinery Co., Ltd.'s patents?

Hitachi Construction Machinery Co., Ltd.'s patents average 5.6 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 Construction Machinery Co., 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 Construction Machinery Co., Ltd.

USPTO PatentsView assignee record - 771 granted patents across 107 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: E02F (DREDGING; Soil-shifting).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Hitachi ranks #580 of 49,997 tracked US assignees by granted-patent volume, with 771 patents across 107 technology areas.

#580
of 49,997 US assignees by volume: Top 5%
by Innovation Score (57.1/100): 5.6
avg claims per patent: -3%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R580 · Foreign Corporation #580 · 771 grants

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

GRANTS-MID 771 grants
TOP-DECILE #580/49,997
PHOTO-FINISH Novozymes A/S
CPC-WIDE E02F · 107 areas
INNOV-PAR 57.1/100
CLAIMS-SPARSE 5.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT -3% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Novozymes A/S (±1 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 57.1 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 23.0 pts (40%) Velocity 5.8 pts (10%) Breadth 25.0 pts (44%) Claim depth 3.3 pts (6%)

Qualcomm Incorporated · highest

85
Carl Freudenberg KG · near

57
Chongqing BOE… · near

57
Eltek S p A · near

57
Hitachi Construction… · this assignee

57
Myriad Women's Health · near

57
3D Lighting… · lowest

7

What this shows Hitachi's Innovation Score is 57.1/100 (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 5.6 claims/patent is at or below the 17.1 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 Construction Machinery Co., Ltd. received 348 grants versus 357 in 2015–2019 (-3% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2024 at 94 grants and bottomed in 2023 at 37. Lead class E02F accounts for 77.2% of the portfolio across 107 subclasses. Volume neighbours: Osram Oled GMBH (#576) and Janssen Pharmaceuticals, Inc. (#584).

Hitachi's three-year grant acceleration

From 2019–2021 to 2022–2024, Hitachi Construction Machinery Co., Ltd. moved from 231 to 201 grants (0.87x 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 #1,594. See the growth leaderboard.

Osram Oled

781
Mitsubishi Electr…

780
Chevron Phillips…

777
SK Telecom

772
Hitachi Construct… ◀

771
Novozymes A/S

770
Axis AB

769
Globalfoundries S…

769
Janssen Pharmaceu…

769

What this shows Hitachi holds 771 patents at rank #580, 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 #580 in granted patent volume.

Leaders in E02F (Dredging)

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 E02F (Dredging), Hitachi ranks #3 of 348 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (57 here).

Carl Freudenberg KG 57 Eltek S.p.A. 57 Chongqing BOE Display Technology Co., Ltd. 57 Myriad Women's Health, Inc. 57

Similar claim depth

Nearest assignees by average claims per patent (5.6 here).

Totani Corporation 5.6 avg Beijing Roborock Technology Co., Ltd. 5.5 avg Mitsubishi Heavy Industries Machine Tool Co., Ltd. 5.5 avg Doskocil Manufacturing Company, Inc. 5.5 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 Construction Machinery Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	79	10.2%
2016	78	10.1%
2017	66	8.6%
2018	50	6.5%
2019	84	10.9%
2020	72	9.3%
2021	75	9.7%
2022	70	9.1%
2023	37	4.8%
2024	94	12.2%
2025partial year	66	8.6%

Which technologies does Hitachi Construction Machinery Co., Ltd. patent most?

E02F - DREDGING; Soil-shifting 595

F15B - Systems Acting BY Means OF Fluids IN GENERAL; Fluid-pressure Actuators, e.g. SERVOMOTORS; Details OF Fluid-pressure Systems, NOT Otherwise Provided FOR 204

Y02T - Climate Change Mitigation Technologies Related TO Transportation 132

B60K - Arrangement OR Mounting OF Propulsion Units OR OF Transmissions IN VEHICLES; Arrangement OR Mounting OF Plural Diverse Prime-movers IN VEHICLES; Auxiliary Drives FOR VEHICLES; Instrumentation OR Dashboards FOR VEHICLES; Arrangements IN Connection With Cooling, AIR Intake, GAS Exhaust OR Fuel Supply 120

B60Y - Indexing Scheme Relating TO Aspects Cross-cutting Vehicle Technology 109

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 100

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 82

F02D - Controlling Combustion Engines 67

G05D - Systems FOR Controlling OR Regulating Non-electric Variables 49

F16H - Gearing 39

G08G - Traffic Control Systems 39

Y10S - Technical Subjects Covered BY Former Uspc Cross-reference ART Collections [XRACs] AND Digests 37

F01N - Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines 35

G07C - Time OR Attendance REGISTERS; Registering OR Indicating THE Working OF MACHINES; Generating Random NUMBERS; Voting OR Lottery APPARATUS; Arrangements, Systems OR Apparatus FOR Checking NOT Provided FOR Elsewhere 34

B60P - Vehicles Adapted FOR Load Transportation OR TO Transport, TO Carry, OR TO Comprise Special Loads OR Objects 34

Top 15 of 107 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 Construction Machinery Co., Ltd.'s patent record in context - here's where to go next.

Hitachi Construction Machinery Co., Ltd.'s lead technology class is E02F (DREDGING; Soil-shifting), 77.2% of its portfolio - see every assignee active in that class. Explore E02F
Ranked #580 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hitachi Construction Machinery Co., Ltd. against Osram Oled GMBH, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 57.1/100 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.