Where does American AIR Filter Company, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), American AIR Filter Company, Inc. ranks #13,854 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 American AIR Filter Company, Inc. hold?

American AIR Filter Company, Inc. holds 21 US utility patents granted between 2015 and 2024, spanning 15 technology areas.

What is American AIR Filter Company, Inc.'s Innovation Score?

American AIR Filter Company, Inc. has an Innovation Score of 38.3 out of 100 (top 41% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does American AIR Filter Company, Inc. focus on?

American AIR Filter Company, Inc.'s top technology area is B01D (Separation) with 19 patents, ranking #250 of 3,536 assignees active in that subclass. Grants appear in 15 CPC subclasses total.

Is American AIR Filter Company, Inc.'s patent grant rate increasing or decreasing?

American AIR Filter Company, Inc.'s recent grant velocity is -9% 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 American AIR Filter Company, Inc.'s patents?

American AIR Filter Company, Inc.'s patents average 17.6 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 American AIR Filter Company, 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

American AIR Filter Company, Inc.

USPTO PatentsView assignee record - 21 granted patents across 15 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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The verdict

According to USPTO PatentsView, American ranks #13,854 of 49,997 tracked US assignees by granted-patent volume, with 21 patents across 15 technology areas.

#13,854
of 49,997 US assignees by volume: Top 41%
by Innovation Score (38.3/100): 17.6
avg claims per patent: -9%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R13854 · US Corporation #13,854 · 21 grants

GRANTS-SMALL · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-USCORP · VEL-FLAT · BOOK-FULL

GRANTS-SMALL 21 grants
MID-PACK #13,854/49,997
PHOTO-FINISH Aimm Therapeutics B V
CPC-FOCUS B01D · 15 areas
INNOV-THIN 38.3/100
CLAIMS-RICH 17.6 claims/avg
TYPE-USCORP US Corporation
VEL-FLAT -9% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Aimm Therapeutics B.V. (±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 American’s 38.3 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 10.7 pts (28%) Velocity 3.3 pts (9%) Breadth 13.7 pts (36%) Claim depth 10.6 pts (28%)

Qualcomm Incorporated · highest

85
American AIR Filter · this assignee

38
3D Lighting… · lowest

7

What this shows American's Innovation Score is 38.3/100 (top 41% 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 American?

Each dot is one of American’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). American’s own 17.6 claims/patent is ABOVE the 16.2 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where American's grants concentrate

American AIR Filter Company, Inc. is a focused PatentsView assignee: 15 CPC subclasses with 90.5% of grants classified under B01D (Separation). Peak complete grant year is 2016 (6 grants) versus a trough of 1 in 2015. By volume, American sits between Aimm Therapeutics B.V. and Aprecia Pharmaceuticals LLC.

American's three-year grant acceleration

American AIR Filter Company, Inc. shows 4 grants in 2022–2024 against only 8 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.

Aimm Therapeutics…

21
Alere Switzerland

21
Alstom Holdings

21
Ambilight

21
Amperity

21
Aosense

21
Applied Medical T…

21
Aprecia Pharmaceu…

21
American AIR Filt… ◀

21

What this shows American holds 21 patents at rank #13,840, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near American

By rank, the assignees closest to #13,840 in granted patent volume.

Leaders in B01D (Separation)

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

American's Innovation Score vs. every tracked assignee

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

38 Top 41% higher than 59% 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

American AIR Filter Company, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	4.8%
2016	6	28.6%
2017	2	9.5%
2019	2	9.5%
2020	4	19.0%
2021	2	9.5%
2022	1	4.8%
2023	1	4.8%
2024	2	9.5%

Which technologies does American AIR Filter Company, Inc. patent most?

B01D - Separation 19

F24F - AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR Currents FOR Screening 5

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

Y10T - Technical Subjects Covered BY Former US Classification 3

H02K - Dynamo-electric Machines 2

A01K - Animal HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; Rearing OR Breeding Animals, NOT Otherwise Provided FOR; NEW Breeds OF Animals 2

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 1

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 1

G01M - Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR 1

B05B - Spraying APPARATUS; Atomising APPARATUS; Nozzles 1

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 1

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 1

H04W - Wireless Communication Networks 1

G06F - Electric Digital Data Processing 1

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 1

Top 15 of 15 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

American AIR Filter Company, Inc.'s patent record in context - here's where to go next.

American AIR Filter Company, Inc.'s lead technology class is B01D (Separation), 90.5% of its portfolio - see every assignee active in that class. Explore B01D
Ranked #13,854 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare American AIR Filter Company, Inc. against Aimm Therapeutics B.V., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 38.3/100 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.