USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Doosan Lentjes Gmbh

USPTO PatentsView assignee record - 10 granted patents across 21 technology areas, active 2016–2023. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F23C (METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN ; A CARRIER GAS OR; AIR).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

14.7

Avg claims per patent

+50%

5-year filing velocity

The verdict

Doosan holds 10 US patents across 21 technology areas, rank #26,114 of 50,000 tracked assignees.

#26,114
of 50,000 US assignees by volume: Top 48%
by Innovation Score (36.0/100): 14.7
avg claims per patent: +50%
filing velocity, last 5 yrs

Portfolio overview

Doosan Lentjes Gmbh has been granted 10 US utility patents between 2016 and 2023, placing Doosan Lentjes Gmbh at rank #26,114 across all assignees tracked by PlainPatent. This portfolio spans 21 distinct Cooperative Patent Classification (CPC) subclasses, averaging 14.7 claims per patent with primary concentration in F23C (METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN ; A CARRIER GAS OR; AIR). As a Foreign Corporation, Doosan Lentjes Gmbh is one of the more focused assignees in the PatentsView dataset. By volume, Doosan sits between Dongguan Fumeikang Electrical Technology Co., Ltd. (10 patents, rank #26,110) and DRMA Group International Llc (10 patents, rank #26,118) - the closest US assignees by grant volume. The composite Innovation Score of 36.0/100 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 6 grants, compared with 4 in the 2015–2019 window, a +50% 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 Lentjes Gmbh's 14.7 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 21 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Doosan Lentjes Gmbh against peers pursuing similar technology classes.

Dongguan Fumeikan…

10
Dongguan Goldenho…

10
Dongguan Xuntao

10
Doosan Industrial…

10
Dosan Enerbility

10
DR HAHN & KG

10
DRB Industrial

10
DRMA Group Intern…

10
Doosan Lentjes ◀

10

What this shows Doosan holds 10 patents at rank #26,114, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Doosan's Innovation Score vs. every tracked assignee

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

36 Top 48% higher than 52% 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 · 2016–2023

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Doosan Lentjes Gmbh patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	10.0%
2017	1	10.0%
2018	1	10.0%
2019	1	10.0%
2020	1	10.0%
2021	3	30.0%
2023	2	20.0%

Which technologies does Doosan Lentjes Gmbh patent most?

F23C - METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN ; A CARRIER GAS OR; AIR 6

B01D - SEPARATION 4

B01F - MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING 3

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 3

B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 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

C25B - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR 2

F28D - HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 2

F28F - DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 2

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 1

F23K - FEEDING FUEL TO COMBUSTION APPARATUS 1

F23B - METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL 1

F17C - VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES 1

F27B - FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS 1

C10J - PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES ; CARBURETTING AIR OR OTHER GASES 1

Top 15 of 21 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Standard

Velocity Accelerating

Where it ranks

Overall rank by patents

#26,114

Across all tracked assignees

Innovation Score

36.0 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 Lentjes Gmbh hold?

Doosan Lentjes Gmbh holds 10 US granted patents filed between 2016 and 2023, spanning 21 technology areas.

What is Doosan Lentjes Gmbh's Innovation Score?

Doosan Lentjes Gmbh has an Innovation Score of 36.0 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 Lentjes Gmbh focus on?

Doosan Lentjes Gmbh's top technology area is F23C (METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN ; A CARRIER GAS OR; AIR) with 6 patents. The company has filed patents in 21 CPC subclasses total.

Is Doosan Lentjes Gmbh's patent filing rate increasing or decreasing?

Doosan Lentjes Gmbh's recent filing velocity is +50% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Doosan Lentjes Gmbh's patents?

Doosan Lentjes Gmbh's patents average 14.7 claims each. This falls within the standard range, providing solid legal coverage.

How is the Doosan Lentjes Gmbh 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 10 grants land it in the top 48% 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 #26,114 of 50,000. Top 50 holders
Most of this portfolio concentrates in F23C - see who else leads that technology area. F23C 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

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.