USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Doosan Heavy Industries & Construction Co., Ltd.

USPTO PatentsView assignee record - 354 granted patents across 128 technology areas, active 2015–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F05D (INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS).

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

Explore the portfolio See the ranking

354

Total patents granted

128

CPC technology areas

15.2

Avg claims per patent

+68%

5-year filing velocity

The verdict

Doosan holds 354 US patents across 128 technology areas, rank #1,197 of 50,000 tracked assignees.

#1,197
of 50,000 US assignees by volume: Top 7%
by Innovation Score (55.1/100): 15.2
avg claims per patent: +68%
filing velocity, last 5 yrs

Portfolio overview

Doosan Heavy Industries & Construction Co., Ltd. has been granted 354 US utility patents between 2015 and 2024, placing Doosan Heavy Industries & Construction Co., Ltd. at rank #1,197 across all assignees tracked by PlainPatent. This portfolio spans 128 distinct Cooperative Patent Classification (CPC) subclasses, averaging 15.2 claims per patent with primary concentration in F05D (INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS). As a Foreign Corporation, Doosan Heavy Industries & Construction Co., Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Doosan sits between Shiseido Company, Limited (356 patents, rank #1,193) and Applied Materials Israel Ltd. (353 patents, rank #1,201) - the closest US assignees by grant volume. The composite Innovation Score of 55.1/100 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 222 grants, compared with 132 in the 2015–2019 window, a +68% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. 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 Heavy Industries & Construction Co., Ltd.'s 15.2 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a diversified footprint across 100+ CPC subclasses spreads risk across many technology fronts. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Doosan Heavy Industries & Construction Co., Ltd. against peers pursuing similar technology classes.

Shiseido

356
Volvo Constructio…

355
ABB Technology

354
Audio-technica

354
Headway

354
Hunter Douglas

354
Doosan Heavy Indu… ◀

354
AIR Products AND…

353
Applied Materials…

353

What this shows Doosan holds 354 patents at rank #1,197, 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 #1,197 in granted patent volume.

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

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)

55 Top 7% higher than 93% 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 · 2015–2024

Grants by year

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

View data table

Doosan Heavy Industries & Construction Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	4	1.1%
2016	10	2.8%
2017	19	5.4%
2018	35	9.9%
2019	64	18.1%
2020	129	36.4%
2021	66	18.6%
2022	21	5.9%
2023	3	0.8%
2024	3	0.8%

Which technologies does Doosan Heavy Industries & Construction Co., Ltd. patent most?

F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS 147

F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES 138

B01D - SEPARATION 57

F02C - GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS 56

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 54

C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 51

F23R - GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS 32

F01K - STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES 30

F04D - NON-POSITIVE-DISPLACEMENT PUMPS 21

Y02W - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT 21

Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION 20

G05B - CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 18

F03D - WIND MOTORS 17

F05B - INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G 15

H02K - DYNAMO-ELECTRIC MACHINES 15

Top 15 of 128 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Diversified

Claim Depth Standard

Velocity Accelerating

Where it ranks

Overall rank by patents

#1,197

Across all tracked assignees

Innovation Score

55.1 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 Heavy Industries & Construction Co., Ltd. hold?

Doosan Heavy Industries & Construction Co., Ltd. holds 354 US granted patents filed between 2015 and 2024, spanning 128 technology areas.

What is Doosan Heavy Industries & Construction Co., Ltd.'s Innovation Score?

Doosan Heavy Industries & Construction Co., Ltd. has an Innovation Score of 55.1 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 Heavy Industries & Construction Co., Ltd. focus on?

Doosan Heavy Industries & Construction Co., 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 147 patents. The company has filed patents in 128 CPC subclasses total.

Is Doosan Heavy Industries & Construction Co., Ltd.'s patent filing rate increasing or decreasing?

Doosan Heavy Industries & Construction Co., Ltd.'s recent filing velocity is +68% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Doosan Heavy Industries & Construction Co., Ltd.'s patents?

Doosan Heavy Industries & Construction Co., Ltd.'s patents average 15.2 claims each. This falls within the standard range, providing solid legal coverage.

How is the Doosan Heavy Industries & Construction 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 354 grants land it in the top 7% 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 #1,197 of 50,000. Top 50 holders
Most of this portfolio concentrates in F05D - see who else leads that technology area. F05D 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.