USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Doosan Infracore Co., Ltd.

USPTO PatentsView assignee record - 179 granted patents across 72 technology areas, active 2015–2023. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: E02F (DREDGING; SOIL-SHIFTING).

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

Explore the portfolio See the ranking

179

Total patents granted

CPC technology areas

8.4

Avg claims per patent

-65%

5-year filing velocity

The verdict

Doosan holds 179 US patents across 72 technology areas, rank #2,194 of 50,000 tracked assignees.

#2,194
of 50,000 US assignees by volume: Top 14%
by Innovation Score (49.7/100): 8.4
avg claims per patent: -65%
filing velocity, last 5 yrs

Portfolio overview

Doosan Infracore Co., Ltd. has been granted 179 US utility patents between 2015 and 2023, placing Doosan Infracore Co., Ltd. at rank #2,194 across all assignees tracked by PlainPatent. This portfolio spans 72 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.4 claims per patent with primary concentration in E02F (DREDGING; SOIL-SHIFTING). As a Foreign Corporation, Doosan Infracore Co., Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Doosan sits between Alcatel-lucent USA Inc. (179 patents, rank #2,190) and Inteva Products, Llc (179 patents, rank #2,198) - the closest US assignees by grant volume. The composite Innovation Score of 49.7/100 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. Between 2020 and 2025 the company received 46 grants, compared with 133 in the 2015–2019 window, a -65% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. 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. Doosan Infracore Co., Ltd.'s 8.4 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 72 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Doosan Infracore Co., Ltd. against peers pursuing similar technology classes.

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.

Doosan's Innovation Score vs. every tracked assignee

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

50 Top 14% higher than 86% 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 · 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

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#2,194

Across all tracked assignees

Innovation Score

49.7 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 Doosan Infracore Co., Ltd. hold?

Doosan Infracore Co., Ltd. holds 179 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing 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. The company has filed patents in 72 CPC subclasses total.

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

Doosan Infracore Co., Ltd.'s recent filing velocity is -65% compared to the prior five-year period. Filing 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 relatively simple claim structure, typical for focused inventions.

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.

How to use this portfolio

Doosan's 179 grants land it in the top 14% 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 - Doosan ranks #2,194 of 50,000. Top 50 holders
Most of this portfolio concentrates in E02F - see who else leads that technology area. E02F 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.