Where does Doosan Infracore Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Doosan Infracore Co., Ltd. ranks #2,194 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 Doosan Infracore Co., Ltd. hold?

Doosan Infracore Co., Ltd. holds 179 US utility patents granted between 2015 and 2023, spanning 72 technology areas.

What is Doosan Infracore Co., Ltd.'s Innovation Score?

Doosan Infracore Co., Ltd. has an Innovation Score of 49.7 out of 100 (top 14% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Doosan Infracore Co., Ltd. focus on?

Doosan Infracore Co., Ltd.'s top technology area is E02F (DREDGING; Soil-shifting) with 107 patents, ranking #12 of 348 assignees active in that subclass. Grants appear in 72 CPC subclasses total.

Is Doosan Infracore Co., Ltd.'s patent grant rate increasing or decreasing?

Doosan Infracore Co., Ltd.'s recent grant velocity is -65% 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 Doosan Infracore Co., Ltd.'s patents?

Doosan Infracore Co., Ltd.'s patents average 8.4 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 Doosan Infracore 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

Doosan Infracore Co., Ltd.

USPTO PatentsView assignee record - 179 granted patents across 72 technology areas, recorded in grant years 2015–2023. 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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The verdict

According to USPTO PatentsView, Doosan ranks #2,194 of 49,997 tracked US assignees by granted-patent volume, with 179 patents across 72 technology areas.

#2,194
of 49,997 US assignees by volume: Top 14%
by Innovation Score (49.7/100): 8.4
avg claims per patent: -65%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R2194 · Foreign Corporation #2,194 · 179 grants

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

GRANTS-MID 179 grants
TOP-DECILE #2,194/49,997
PHOTO-FINISH Alcatel-Lucent USA
CPC-WIDE E02F · 72 areas
INNOV-PAR 49.7/100
CLAIMS-PAR 8.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -65% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Alcatel-Lucent USA 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.

How Doosan’s 49.7 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 17.9 pts (36%) Velocity 1.7 pts (3%) Breadth 25.0 pts (50%) Claim depth 5.1 pts (10%)

Qualcomm Incorporated · highest

85
Azur Space Solar Power · near

50
Board OF Regents OF… · near

50
Consumer Safety… · near

50
Doosan Infracore · this assignee

50
Rigaku · near

50
3D Lighting… · lowest

7

What this shows Doosan's Innovation Score is 49.7/100 (top 14% 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 Doosan?

Each dot is one of Doosan’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). Doosan’s own 8.4 claims/patent is at or below the 16.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Doosan's grant cadence moved

Between 2020–2024, Doosan Infracore Co., Ltd. received 46 grants versus 133 in 2015–2019 (-65% equal-window velocity, below median growth). Across complete PatentsView years, output peaked in 2017 at 39 grants and bottomed in 2022 at 6. Lead class E02F accounts for 59.8% of the portfolio across 72 subclasses. Volume neighbours: Alcatel-Lucent USA Inc. (#2,190) and Inteva Products, LLC (#2,198).

Doosan's three-year grant acceleration

From 2019–2021 to 2022–2024, Doosan Infracore Co., Ltd. moved from 56 to 14 grants (0.25x 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 #3,040. See the growth leaderboard.

Alcatel-lucent USA

179
Bauer Hockey

179
Bosch Automotive…

179
Csmc Fab2

179
GE Avio S R L

179
Global Unichip

179
Hitachi Energy Sw…

179
Inteva Products

179
Doosan Infracore ◀

179

What this shows Doosan holds 179 patents at rank #2,194, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Doosan

By rank, the assignees closest to #2,194 in granted patent volume.

Leaders in E02F (Dredging)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Doosan, neither rank-band nor same-CPC leaders (those blocks stay above). In E02F (Dredging), Doosan ranks #12 of 348 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (50 here).

Rigaku Corporation 50 Azur Space Solar Power GmbH 50 Board OF Regents OF THE Nevada System OF Higher Education ON Behalf OF THE OF THE University OF Nevada, Reno 50 Consumer Safety Technology, LLC 50

Similar claim depth

Nearest assignees by average claims per patent (8.4 here).

Kyoraku Co., Ltd. 8.4 avg Ichikoh Industries, Ltd. 8.4 avg Adey Holdings (2008) Limited 8.4 avg GigaLane Co., Ltd. 8.4 avg

Doosan's Innovation Score vs. every tracked assignee

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

50 Top 14% higher than 86% 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 · 2015–2023

Grants by year

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

View data table

Doosan Infracore Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	28	15.6%
2016	26	14.5%
2017	39	21.8%
2018	16	8.9%
2019	24	13.4%
2020	14	7.8%
2021	18	10.1%
2022	6	3.4%
2023	8	4.5%

Which technologies does Doosan Infracore Co., Ltd. patent most?

E02F - DREDGING; Soil-shifting 107

F15B - Systems Acting BY Means OF Fluids IN GENERAL; Fluid-pressure Actuators, e.g. SERVOMOTORS; Details OF Fluid-pressure Systems, NOT Otherwise Provided FOR 56

Y02T - Climate Change Mitigation Technologies Related TO Transportation 37

F02D - Controlling Combustion Engines 37

F01N - Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines 25

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 16

F02B - Internal-combustion Piston ENGINES; Combustion Engines IN General 13

B60Y - Indexing Scheme Relating TO Aspects Cross-cutting Vehicle Technology 11

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 11

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 10

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 9

B60R - Vehicles, Vehicle Fittings, OR Vehicle Parts, NOT Otherwise Provided FOR 9

Y10T - Technical Subjects Covered BY Former US Classification 8

F01P - Cooling OF Machines OR Engines IN GENERAL; Cooling OF Internal-combustion Engines 8

C22C - Alloys 8

Top 15 of 72 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

Doosan Infracore Co., Ltd.'s patent record in context - here's where to go next.

Doosan Infracore Co., Ltd.'s lead technology class is E02F (DREDGING; Soil-shifting), 59.8% of its portfolio - see every assignee active in that class. Explore E02F
Ranked #2,194 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Doosan Infracore Co., Ltd. against Alcatel-Lucent USA Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 49.7/100 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.