Where does Doosan Babcock Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Doosan Babcock Limited ranks #22,472 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 Babcock Limited hold?

Doosan Babcock Limited holds 12 US utility patents granted between 2015 and 2019, spanning 18 technology areas.

What is Doosan Babcock Limited's Innovation Score?

Doosan Babcock Limited has an Innovation Score of 35.7 out of 100 (top 48% 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 Babcock Limited focus on?

Doosan Babcock Limited's top technology area is B01D (Separation) with 4 patents, ranking #1,134 of 3,536 assignees active in that subclass. Grants appear in 18 CPC subclasses total.

Is Doosan Babcock Limited's patent grant rate increasing or decreasing?

Doosan Babcock Limited's recent grant velocity is -100% 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 Babcock Limited's patents?

Doosan Babcock Limited's patents average 19.8 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 Babcock Limited 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 Babcock Limited

USPTO PatentsView assignee record - 12 granted patents across 18 technology areas, recorded in grant years 2015–2019. 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: B01D (Separation).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Doosan ranks #22,472 of 49,997 tracked US assignees by granted-patent volume, with 12 patents across 18 technology areas.

#22,472
of 49,997 US assignees by volume: Top 48%
by Innovation Score (35.7/100): 19.8
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R22472 · Foreign Corporation #22,472 · 12 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 12 grants
MID-PACK #22,472/49,997
PHOTO-FINISH Diode Dynamics L L C
CPC-FOCUS B01D · 18 areas
INNOV-THIN 35.7/100
CLAIMS-RICH 19.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Diode Dynamics, L.L.C. (±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 35.7 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 8.9 pts (25%) Velocity 0.0 pts (0%) Breadth 15.0 pts (42%) Claim depth 11.9 pts (33%)

Qualcomm Incorporated · highest

85
Doosan Babcock · this assignee

36
3D Lighting… · lowest

7

What this shows Doosan's Innovation Score is 35.7/100 (top 48% 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 19.8 claims/patent is ABOVE the 13.4 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Doosan's grants concentrate

Doosan Babcock Limited is a focused PatentsView assignee: 18 CPC subclasses with 33.3% of grants classified under B01D (Separation). Peak complete grant year is 2016 (5 grants) versus a trough of 1 in 2017. By volume, Doosan sits between Diode Dynamics, L.L.C. and Driessen Aerospace Group N.V..

Diode Dynamics L…

12
Disa Industries A…

12
DK City

12
Dongguan Saienchu…

12
Dormakaba Canada

12
Douglas Scientific

12
Dovetail Genomics

12
Driessen Aerospac…

12
Doosan Babcock ◀

12

What this shows Doosan holds 12 patents at rank #22,453, 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 #22,453 in granted patent volume.

Leaders in B01D (Separation)

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, grant velocity, technology breadth, and claim depth (0–100)

36 Top 48% higher than 52% 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 · 2015–2019

Grants by year

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

View data table

Doosan Babcock Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	16.7%
2016	5	41.7%
2017	1	8.3%
2018	3	25.0%
2019	1	8.3%

Which technologies does Doosan Babcock Limited patent most?

B01D - Separation 4

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 3

F22B - Methods OF Steam GENERATION; Steam Boilers 2

F23C - Methods OR Apparatus FOR Combustion Using Fluid Fuel OR Solid Fuel Suspended IN ; A Carrier GAS OR; AIR 2

F23D - Burners 2

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 2

F23L - Supplying AIR OR Non-combustible Liquids OR Gases TO Combustion Apparatus IN General ; Valves OR Dampers Specially Adapted FOR Controlling AIR Supply OR Draught IN Combustion Apparatus ; Inducing Draught IN Combustion APPARATUS; Tops FOR Chimneys OR Ventilating SHAFTS; Terminals FOR Flues 2

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 2

F01K - Steam Engine PLANTS; Steam ACCUMULATORS; Engine Plants NOT Otherwise Provided FOR; Engines Using Special Working Fluids OR Cycles 2

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 1

Y10T - Technical Subjects Covered BY Former US Classification 1

F23N - Regulating OR Controlling Combustion 1

H02N - Electric Machines NOT Otherwise Provided FOR 1

F25J - Liquefaction, Solidification OR Separation OF Gases OR Gaseous ; OR Liquefied GASEOUS; Mixtures BY Pressure AND Cold Treatment ; OR BY Bringing Them Into THE Supercritical State 1

B01F - Mixing, e.g. Dissolving, Emulsifying OR Dispersing 1

Top 15 of 18 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 Babcock Limited's patent record in context - here's where to go next.

Doosan Babcock Limited's lead technology class is B01D (Separation), 33.3% of its portfolio - see every assignee active in that class. Explore B01D
Ranked #22,472 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Doosan Babcock Limited against Diode Dynamics, L.L.C., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 35.7/100 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.