Where does Cardinal IP Holding, LLC rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Cardinal IP Holding, LLC ranks #39,331 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 Cardinal IP Holding, LLC hold?

Cardinal IP Holding, LLC holds 6 US utility patents granted between 2021 and 2023, spanning 11 technology areas.

What is Cardinal IP Holding, LLC's Innovation Score?

Cardinal IP Holding, LLC has an Innovation Score of 32.2 out of 100 (40th 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 Cardinal IP Holding, LLC focus on?

Cardinal IP Holding, LLC's top technology area is F23J (Removal OR Treatment OF Combustion Products OR Combustion RESIDUES; Flues) with 3 patents, ranking #34 of 155 assignees active in that subclass. Grants appear in 11 CPC subclasses total.

Is Cardinal IP Holding, LLC's patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Cardinal IP Holding, LLC.

What does claim depth mean for Cardinal IP Holding, LLC's patents?

Cardinal IP Holding, LLC's patents average 17.3 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 Cardinal IP Holding, LLC 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

Cardinal IP Holding, LLC

USPTO PatentsView assignee record - 6 granted patents across 11 technology areas, recorded in grant years 2021–2023. 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: F23J (Removal OR Treatment OF Combustion Products OR Combustion RESIDUES; Flues).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Cardinal ranks #39,331 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 11 technology areas.

#39,331
of 49,997 US assignees by volume: 40th percentile
by Innovation Score (32.2/100): 17.3
avg claims per patent

USPTO PatentsView assignee plate

Corpus R39331 · US Corporation #39,331 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-USCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 6 grants
LOWER-Q #39,331/49,997
PHOTO-FINISH Caracal International
CPC-FOCUS F23J · 11 areas
INNOV-THIN 32.2/100
CLAIMS-RICH 17.3 claims/avg
TYPE-USCORP US Corporation
SPAN-YRS 2021–2023 · 3y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Caracal International, LLC (±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 Cardinal’s 32.2 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 6.7 pts (21%) Velocity 3.3 pts (10%) Breadth 11.7 pts (36%) Claim depth 10.4 pts (32%)

Qualcomm Incorporated · highest

85
Cardinal IP Holding · this assignee

32
3D Lighting… · lowest

7

What this shows Cardinal's Innovation Score is 32.2/100 (40th 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 Cardinal?

Each dot is one of Cardinal’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). Cardinal’s own 17.3 claims/patent is ABOVE the 13.8 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Cardinal's grants concentrate

Cardinal IP Holding, LLC is a focused PatentsView assignee: 11 CPC subclasses with 50% of grants classified under F23J (Removal OR Treatment OF Combustion Products OR Combustion RESIDUES; Flues). Peak complete grant year is 2021 (4 grants) versus a trough of 2 in 2023. By volume, Cardinal sits between Caracal International, LLC and Carl Zeiss Vision Italia S.p.A.

Cardinal's three-year grant acceleration

Cardinal IP Holding, LLC shows 2 grants in 2022–2024 against only 4 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.

Caracal Internati…

6
Carbon Revolution…

6
Carbon3d

6
Carbonics

6
Care Essentials P…

6
Careandwear II

6
Caris Life Scienc…

6
Carl Zeiss Vision…

6
Cardinal IP Holdi… ◀

6

What this shows Cardinal holds 6 patents at rank #39,507, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Cardinal

By rank, the assignees closest to #39,507 in granted patent volume.

Leaders in F23J (Removal OR Treatment OF Combustion Products OR Combustion…)

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

Cardinal's Innovation Score vs. every tracked assignee

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

32 40th percentile higher than 40% 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 · 2021–2023

Grants by year

Teal-shaded recent years (2020–present) versus the 2021–2019 baseline. Full figures in the table below.

View data table

Cardinal IP Holding, LLC patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2021	4	66.7%
2023	2	33.3%

Which technologies does Cardinal IP Holding, LLC patent most?

F23J - Removal OR Treatment OF Combustion Products OR Combustion RESIDUES; Flues 3

G08B - Signalling OR Calling SYSTEMS; Order TELEGRAPHS; Alarm Systems 2

F24F - AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR Currents FOR Screening 2

F21S - Non-portable Lighting DEVICES; Systems THEREOF; Vehicle Lighting Devices Specially Adapted FOR Vehicle Exteriors 1

F21Y - Indexing Scheme Associated With Subclasses F21k, F21l, F21s and F21v, Relating TO THE Form OR THE Kind OF THE Light Sources OR OF THE Colour OF THE Light Emitted 1

F21V - Functional Features OR Details OF Lighting Devices OR Systems THEREOF; Structural Combinations OF Lighting Devices With Other Articles, NOT Otherwise Provided FOR 1

F23N - Regulating OR Controlling Combustion 1

G01K - Measuring TEMPERATURE; Measuring Quantity OF HEAT; Thermally-sensitive Elements NOT Otherwise Provided FOR 1

A62C - Fire-fighting 1

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 1

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

Top 11 of 11 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

Cardinal IP Holding, LLC's patent record in context - here's where to go next.

Cardinal IP Holding, LLC's lead technology class is F23J (Removal OR Treatment OF Combustion Products OR Combustion RESIDUES; Flues), 50% of its portfolio - see every assignee active in that class. Explore F23J
Ranked #39,331 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Cardinal IP Holding, LLC against Caracal International, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 32.2/100 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.