Where does Camfil AB rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Camfil AB ranks #7,992 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 Camfil AB hold?

Camfil AB holds 40 US utility patents granted between 2015 and 2025, spanning 10 technology areas.

What is Camfil AB's Innovation Score?

Camfil AB has an Innovation Score of 33.6 out of 100 (45th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Camfil AB focus on?

Camfil AB's top technology area is B01D (Separation) with 30 patents, ranking #150 of 3,536 assignees active in that subclass. Grants appear in 10 CPC subclasses total.

Is Camfil AB's patent grant rate increasing or decreasing?

Camfil AB's recent grant velocity is -48% 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 Camfil AB's patents?

Camfil AB's patents average 10.8 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 Camfil AB 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

Camfil AB

USPTO PatentsView assignee record - 40 granted patents across 10 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: B01D (Separation).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Camfil ranks #7,992 of 49,997 tracked US assignees by granted-patent volume, with 40 patents across 10 technology areas.

#7,992
of 49,997 US assignees by volume: 45th percentile
by Innovation Score (33.6/100): 10.8
avg claims per patent: -48%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R7992 · Foreign Corporation #7,992 · 40 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 40 grants
UPPER-Q #7,992/49,997
PHOTO-FINISH Cambridge Internatio…
CPC-FOCUS B01D · 10 areas
INNOV-THIN 33.6/100
CLAIMS-PAR 10.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -48% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Cambridge International, Inc. (±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 Camfil’s 33.6 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 12.8 pts (38%) Velocity 3.1 pts (9%) Breadth 11.2 pts (33%) Claim depth 6.5 pts (19%)

Qualcomm Incorporated · highest

85
Camfil AB · this assignee

34
Leica Microsystems… · near

34
Tazmo · near

34
Daiwa Kasei Kogyo · near

34
Pieris Pharmaceuticals · near

34
3D Lighting… · lowest

7

What this shows Camfil's Innovation Score is 33.6/100 (45th percentile 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 Camfil?

Each dot is one of Camfil’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). Camfil’s own 10.8 claims/patent is at or below the 17.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Camfil's grants concentrate

Camfil AB is a focused PatentsView assignee: 10 CPC subclasses with 75% of grants classified under B01D (Separation). Peak complete grant year is 2019 (9 grants) versus a trough of 1 in 2023. By volume, Camfil sits between Cantor Index, LLC and Centre of Excellence in Wireless Technology.

Camfil's three-year grant acceleration

Camfil AB shows 7 grants in 2022–2024 against only 15 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.

Cantor Index

40
China Iwncomm

40
Cummins Intellect…

40
Cambridge Interna…

40
Cathay Biotech

40
Cboe Exchange

40
Center of Human-c…

40
Centre of Excelle…

40
Camfil AB ◀

40

What this shows Camfil holds 40 patents at rank #7,995, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Camfil

By rank, the assignees closest to #7,995 in granted patent volume.

Leaders in B01D (Separation)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Camfil, neither rank-band nor same-CPC leaders (those blocks stay above). In B01D (Separation), Camfil ranks #150 of 3,536 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (34 here).

Leica Microsystems (Schweiz) AG 34 Tazmo Co., Ltd. 34 Daiwa Kasei Kogyo Kabushiki Kaisha 34 Pieris Pharmaceuticals GmbH 34

Camfil's Innovation Score vs. every tracked assignee

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

34 45th percentile higher than 45% 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

Camfil AB patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	4	10.0%
2016	3	7.5%
2017	6	15.0%
2018	3	7.5%
2019	9	22.5%
2020	4	10.0%
2021	2	5.0%
2022	4	10.0%
2023	1	2.5%
2024	2	5.0%
2025partial year	2	5.0%

Which technologies does Camfil AB patent most?

B01D - Separation 30

F24F - AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR Currents FOR Screening 6

G01M - Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR 4

F02C - Gas-turbine PLANTS; AIR Intakes FOR Jet-propulsion PLANTS; Controlling Fuel Supply IN Air-breathing Jet-propulsion Plants 4

Y10T - Technical Subjects Covered BY Former US Classification 3

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 3

B05B - Spraying APPARATUS; Atomising APPARATUS; Nozzles 3

F05D - Indexing Scheme FOR Aspects Relating TO Non-positive-displacement Machines OR Engines, Gas-turbines OR Jet-propulsion Plants 3

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 1

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 1

Top 10 of 10 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

Camfil AB's patent record in context - here's where to go next.

Camfil AB's lead technology class is B01D (Separation), 75% of its portfolio - see every assignee active in that class. Explore B01D
Ranked #7,992 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Camfil AB against Cantor Index, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 33.6/100 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.