Where does Unifrax I LLC rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Unifrax I LLC ranks #9,910 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 Unifrax I LLC hold?

Unifrax I LLC holds 32 US utility patents granted between 2015 and 2024, spanning 33 technology areas.

What is Unifrax I LLC's Innovation Score?

Unifrax I LLC has an Innovation Score of 52.0 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%).

Is Unifrax I LLC's patent grant rate increasing or decreasing?

Unifrax I LLC'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 Unifrax I LLC's patents?

Unifrax I LLC's patents average 24.4 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 Unifrax I 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

Unifrax I LLC

Q: What technology areas does Unifrax I LLC focus on?

Unifrax I LLC's top technology area is C04B (Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone) with 16 patents, ranking #84 of 1,052 assignees active in that subclass. Grants appear in 33 CPC subclasses total.

USPTO PatentsView assignee record - 32 granted patents across 33 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: C04B (Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Unifrax ranks #9,910 of 49,997 tracked US assignees by granted-patent volume, with 32 patents across 33 technology areas.

#9,910
of 49,997 US assignees by volume: Top 11%
by Innovation Score (52.0/100): 24.4
avg claims per patent: -48%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R9910 · US Corporation #9,910 · 32 grants

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

GRANTS-SMALL 32 grants
UPPER-Q #9,910/49,997
PHOTO-FINISH Topsoe A/S
CPC-FOCUS C04B · 33 areas
INNOV-PAR 52.0/100
CLAIMS-DENSE 24.4 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -48% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Topsoe A/S (±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 Unifrax’s 52.0 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 12.1 pts (23%) Velocity 5.0 pts (10%) Breadth 20.3 pts (39%) Claim depth 14.6 pts (28%)

Qualcomm Incorporated · highest

85
Advantest Test… · near

52
Chr Hansen HMO · near

52
Latham Pool Products · near

52
THE University OF… · near

52
Unifrax I · this assignee

52
3D Lighting… · lowest

7

What this shows Unifrax's Innovation Score is 52.0/100 (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 Unifrax?

Each dot is one of Unifrax’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). Unifrax’s own 24.4 claims/patent is ABOVE the 16.1 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Unifrax's grants concentrate

Unifrax I LLC is a focused PatentsView assignee: 33 CPC subclasses with 50% of grants classified under C04B (Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone). Peak complete grant year is 2018 (6 grants) versus a trough of 2 in 2016. By volume, Unifrax sits between Topsoe A/S and United States Department of Energy.

Unifrax's three-year grant acceleration

Unifrax I LLC shows 6 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.

Topsoe A/S

32
Toshiba Industria…

32
Triquint Semicond…

32
Turtle Beach

32
Universite Montpe…

32
University OF Sou…

32
UniversitÀ Degli…

32
United States Dep…

32
Unifrax I ◀

32

What this shows Unifrax holds 32 patents at rank #9,909, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Unifrax

By rank, the assignees closest to #9,909 in granted patent volume.

Leaders in C04B (Lime)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Unifrax, neither rank-band nor same-CPC leaders (those blocks stay above). In C04B (Lime), Unifrax ranks #84 of 1,052 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (52 here).

Advantest Test Solutions, Inc. 52 Latham Pool Products, Inc. 52 THE University OF Ottawa 52 Chr. Hansen HMO GmbH 52

Unifrax'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 · 2015–2024

Grants by year

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

View data table

Unifrax I LLC patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	15.6%
2016	2	6.3%
2017	5	15.6%
2018	6	18.8%
2019	3	9.4%
2020	2	6.3%
2021	3	9.4%
2023	2	6.3%
2024	4	12.5%

Which technologies does Unifrax I LLC patent most?

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 16

Y10T - Technical Subjects Covered BY Former US Classification 12

C03C - Chemical Composition OF Glasses, Glazes OR Vitreous ENAMELS; Surface Treatment OF GLASS; Surface Treatment OF Fibres OR Filaments Made From Glass, Minerals OR SLAGS; Joining Glass TO Glass OR Other Materials 11

F01N - Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines 9

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 9

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 8

D04H - Making Textile Fabrics, e.g. From Fibres OR Filamentary Material ; Fabrics Made BY Such Processes OR Apparatus, e.g. Felts, Non-woven FABRICS; COTTON-WOOL; Wadding ; ; Non-woven Fabrics From Staple Fibres, Filaments OR Yarns, Bonded With AT Least ONE Web-like Material During Their Consolidation 6

D01F - Chemical Features IN THE Manufacture OF Artificial Filaments, Threads, Fibres, Bristles OR RIBBONS; Apparatus Specially Adapted FOR THE Manufacture OF Carbon Filaments 5

E04B - General Building CONSTRUCTIONS; Walls, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; Insulation OR Other Protection OF Buildings 4

D21H - Pulp COMPOSITIONS; Preparation Thereof NOT Covered BY Subclasses D21c OR D21D; Impregnating OR Coating OF PAPER; Treatment OF Finished Paper NOT Covered BY Class B31 OR Subclass D21G; Paper NOT Otherwise Provided FOR 3

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 3

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 3

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 3

B01D - Separation 3

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 2

Top 15 of 33 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

Unifrax I LLC's patent record in context - here's where to go next.

Unifrax I LLC's lead technology class is C04B (Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone), 50% of its portfolio - see every assignee active in that class. Explore C04B
Ranked #9,910 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Unifrax I LLC against Topsoe A/S, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 52.0/100 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.