Where does Fuel Tech, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Fuel Tech, Inc. ranks #16,034 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 Fuel Tech, Inc. hold?

Fuel Tech, Inc. holds 18 US utility patents granted between 2015 and 2024, spanning 17 technology areas.

What is Fuel Tech, Inc.'s Innovation Score?

Fuel Tech, Inc. has an Innovation Score of 51.1 out of 100 (top 12% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Fuel Tech, Inc. focus on?

Fuel Tech, Inc.'s top technology area is B01D (Separation) with 11 patents. Grants appear in 17 CPC subclasses total.

Is Fuel Tech, Inc.'s patent grant rate increasing or decreasing?

Fuel Tech, Inc.'s recent grant velocity is -50% 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 Fuel Tech, Inc.'s patents?

Fuel Tech, Inc.'s patents average 10.7 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 Fuel Tech, Inc. 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 US Corporation

Fuel Tech, Inc.

USPTO PatentsView assignee record - 18 granted patents across 17 technology areas, recorded in grant years 2015–2024. 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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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Fuel ranks #16,034 of 49,997 tracked US assignees by granted-patent volume, with 18 patents across 17 technology areas.

#16,034
of 49,997 US assignees by volume: Top 12%
by Innovation Score (51.1/100): 10.7
avg claims per patent: -50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R16034 · US Corporation #16,034 · 18 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 18 grants
MID-PACK #16,034/49,997
PHOTO-FINISH Foseco International
CPC-FOCUS B01D · 17 areas
INNOV-PAR 51.1/100
CLAIMS-PAR 10.7 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -50% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Foseco International Limited (±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
Fuel Tech · this assignee

51
3D Lighting… · lowest

7

What this shows Fuel's Innovation Score is 51.1/100 (top 12% 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 Fuel's grants concentrate

Fuel Tech, Inc. is a focused PatentsView assignee: 17 CPC subclasses with 61.1% of grants classified under B01D (Separation). Peak complete grant year is 2015 (3 grants) versus a trough of 1 in 2018. By volume, Fuel sits between Foseco International Limited and GE Energy Products France SNC.

Fuel's three-year grant acceleration

Fuel Tech, Inc. shows 6 grants in 2022–2024 against only 2 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.

Foseco Internatio…

18
Fractilia

18
Freelinc

18
Fukui Precision C…

18
Fuji Polymer Indu…

18
Fujifilm Diosynth…

18
Gangneung-wonju N…

18
GE Energy Product…

18
Fuel Tech ◀

18

What this shows Fuel holds 18 patents at rank #16,035, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Fuel

By rank, the assignees closest to #16,035 in granted patent volume.

Leaders in B01D (Separation)

Other assignees with the most granted patents in Fuel's primary technology class.

Fuel's Innovation Score vs. every tracked assignee

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

51 Top 12% higher than 88% 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 · 2015–2024

Grants by year

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

View data table

Fuel Tech, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	16.7%
2016	3	16.7%
2017	3	16.7%
2018	1	5.6%
2019	2	11.1%
2022	3	16.7%
2023	2	11.1%
2024	1	5.6%

Which technologies does Fuel Tech, Inc. patent most?

B01D - Separation 11

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 8

F23J - Removal OR Treatment OF Combustion Products OR Combustion RESIDUES; Flues 7

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 4

C01C - AMMONIA; CYANOGEN; Compounds Thereof 3

B01F - Mixing, e.g. Dissolving, Emulsifying OR Dispersing 2

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 1

F27D - Details OR Accessories OF Furnaces, Kilns, Ovens OR Retorts, IN SO FAR AS They ARE OF Kinds Occurring IN More Than ONE Kind OF Furnace 1

F27B - Furnaces, Kilns, Ovens OR Retorts IN GENERAL; Open Sintering OR Like Apparatus 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 1

F23N - Regulating OR Controlling Combustion 1

Y10T - Technical Subjects Covered BY Former US Classification 1

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

F01N - Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines 1

Top 15 of 17 technology areas

Where it ranks

Overall rank by patents

#16,034

of 49,997 tracked assignees

Innovation Score

51.1 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Fuel Tech, Inc.'s patent record in context - here's where to go next.

Fuel Tech, Inc.'s lead technology class is B01D (Separation), 61.1% of its portfolio - see every assignee active in that class. Explore B01D
Ranked #16,034 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Fuel Tech, Inc. against Foseco International Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 51.1/100 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.