Where does Doosan Lentjes Gmbh rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Doosan Lentjes Gmbh ranks #26,147 of 50,000 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 Lentjes Gmbh hold?

Doosan Lentjes Gmbh holds 10 US utility patents granted 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 (top 48% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Doosan Lentjes Gmbh's recent grant velocity is +50% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

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

Doosan Lentjes Gmbh's patents average 14.7 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 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Doosan Lentjes Gmbh

Q: 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. Grants appear in 21 CPC subclasses total.

USPTO PatentsView assignee record - 10 granted patents across 21 technology areas, recorded in grant years 2016–2023. 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: F23C (METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN ; A CARRIER GAS OR; AIR).

Compiled by PlainPatent · May 15, 2026

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Doosan ranks #26,147 of 50,000 tracked US assignees by granted-patent volume, with 10 patents across 21 technology areas.

#26,147
of 50,000 US assignees by volume: Top 48%
by Innovation Score (36.0/100): 14.7
avg claims per patent: +50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R26147 · Foreign Corporation #26,147 · 10 grants

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

GRANTS-MICRO 10 grants
MID-PACK #26,147/50,000
PHOTO-FINISH DONGGUAN FUMEIKANG E…
CPC-FOCUS F23C · 21 areas
INNOV-THIN 36.0/100
CLAIMS-RICH 14.7 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +50% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Dongguan Fumeikang Electrical Technology Co., Ltd. (±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.

Qualcomm Incorporated · highest

85
Doosan Lentjes · this assignee

36
3D Lighting Innovati… · lowest

7

What this shows Doosan's Innovation Score is 36.0/100 (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.

Where Doosan's grants concentrate

Doosan Lentjes Gmbh is a focused PatentsView assignee: 21 CPC subclasses with 60% of grants classified under F23C (METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN ; A CARRIER GAS OR; AIR). Peak complete grant year is 2021 (3 grants) versus a trough of 1 in 2016. By volume, Doosan sits between Dongguan Fumeikang Electrical Technology Co., Ltd. and DRMA Group International Llc.

Doosan's three-year grant acceleration

Doosan Lentjes Gmbh shows 2 grants in 2022–2024 against only 5 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

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.

Companies ranked near Doosan

By rank, the assignees closest to #26,114 in granted patent volume.

Leaders in F23C (Methods OR Apparatus FOR Combustion Using Fluid FUEL OR S…)

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 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

Where it ranks

Overall rank by patents

#26,147

of 50,000 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?

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.