Where does Calgon Carbon Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Calgon Carbon Corporation ranks #10,568 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 Calgon Carbon Corporation hold?

Calgon Carbon Corporation holds 29 US utility patents granted between 2015 and 2025, spanning 21 technology areas.

What is Calgon Carbon Corporation's Innovation Score?

Calgon Carbon Corporation has an Innovation Score of 51.8 out of 100 (top 11% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Calgon Carbon Corporation focus on?

Calgon Carbon Corporation's top technology area is B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus) with 24 patents, ranking #194 of 2,755 assignees active in that subclass. Grants appear in 21 CPC subclasses total.

Is Calgon Carbon Corporation's patent grant rate increasing or decreasing?

Calgon Carbon Corporation's recent grant velocity is +138% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Calgon Carbon Corporation's patents?

Calgon Carbon Corporation's patents average 17.5 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 Calgon Carbon Corporation 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

Calgon Carbon Corporation

USPTO PatentsView assignee record - 29 granted patents across 21 technology areas, recorded in grant years 2015–2025. 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: B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Calgon ranks #10,568 of 49,997 tracked US assignees by granted-patent volume, with 29 patents across 21 technology areas.

#10,568
of 49,997 US assignees by volume: Top 11%
by Innovation Score (51.8/100): 17.5
avg claims per patent: +138%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R10568 · US Corporation #10,568 · 29 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-USCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 29 grants
UPPER-Q #10,568/49,997
PHOTO-FINISH British Broadcasting
CPC-FOCUS B01J · 21 areas
INNOV-PAR 51.8/100
CLAIMS-RICH 17.5 claims/avg
TYPE-USCORP US Corporation
VEL-SURGE +138% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: British Broadcasting Corporation (±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 Calgon’s 51.8 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 11.7 pts (23%) Velocity 13.3 pts (26%) Breadth 16.2 pts (31%) Claim depth 10.5 pts (20%)

Qualcomm Incorporated · highest

85
Calgon Carbon · this assignee

52
CMC Materials · near

52
Delaware Capital… · near

52
Dialog Semiconductor… · near

52
University of… · near

52
3D Lighting… · lowest

7

What this shows Calgon's Innovation Score is 51.8/100 (top 11% 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 Calgon?

Each dot is one of Calgon’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). Calgon’s own 17.5 claims/patent is at or below the 18.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Calgon's grants concentrate

Calgon Carbon Corporation is a focused PatentsView assignee: 21 CPC subclasses with 82.8% of grants classified under B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus). Peak complete grant year is 2024 (9 grants) versus a trough of 1 in 2015. By volume, Calgon sits between British Broadcasting Corporation and Centre Leon Berard.

Calgon's three-year grant acceleration

Calgon Carbon Corporation shows 14 grants in 2022–2024 against only 7 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.

British Broadcast…

29
C N R S

29
C3 Nano

29
C4 Therapeutics

29
Calithera Bioscie…

29
Cbrite

29
Celltrion

29
Centre Leon Berard

29
Calgon Carbon ◀

29

What this shows Calgon holds 29 patents at rank #10,569, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Calgon

By rank, the assignees closest to #10,569 in granted patent volume.

Leaders in B01J (Chemical OR Physical Processes)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Calgon, neither rank-band nor same-CPC leaders (those blocks stay above). In B01J (Chemical OR Physical Processes), Calgon ranks #194 of 2,755 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (52 here).

CMC Materials LLC 52 University of Louisiana at Lafayette 52 Delaware Capital Formation, Inc. 52 Dialog Semiconductor B.V. 52

Calgon's Innovation Score vs. every tracked assignee

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

52 Top 11% higher than 89% 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 · 2015–2025

Grants by year

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

View data table

Calgon Carbon Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	3.4%
2016	4	13.8%
2018	1	3.4%
2019	2	6.9%
2020	4	13.8%
2021	1	3.4%
2023	5	17.2%
2024	9	31.0%
2025partial year	2	6.9%

Which technologies does Calgon Carbon Corporation patent most?

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 24

B01D - Separation 20

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 8

Y02C - Capture, Storage, Sequestration OR Disposal OF Greenhouse Gases [GHG] 6

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 5

B67D - Dispensing, Delivering OR Transferring Liquids, NOT Otherwise Provided FOR 4

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 4

C10L - Fuels NOT Otherwise Provided FOR; Natural GAS; Synthetic Natural GAS Obtained BY Processes NOT Covered BY Subclasses C10g OR C10K; Liquified Petroleum GAS; USE OF Additives TO Fuels OR FIRES; Fire-lighters 3

Y10T - Technical Subjects Covered BY Former US Classification 2

C01C - AMMONIA; CYANOGEN; Compounds Thereof 2

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 2

Y02A - Technologies FOR Adaptation TO Climate Change 2

C07C - Acyclic OR Carbocyclic Compounds 2

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 1

H01G - CAPACITORS; Capacitors, Rectifiers, Detectors, Switching Devices, Light-sensitive OR Temperature-sensitive Devices OF THE Electrolytic Type 1

Top 15 of 21 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

Calgon Carbon Corporation's patent record in context - here's where to go next.

Calgon Carbon Corporation's lead technology class is B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus), 82.8% of its portfolio - see every assignee active in that class. Explore B01J
Ranked #10,568 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Calgon Carbon Corporation against British Broadcasting Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 51.8/100 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.