USPTO 2015–2025 USPTO PatentsView US Corporation

Dura-line Llc

USPTO PatentsView assignee record - 9 granted patents across 16 technology areas, active 2016–2023. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F16L (PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

22.3

Avg claims per patent

-20%

5-year filing velocity

The verdict

Dura-line holds 9 US patents across 16 technology areas, rank #28,608 of 50,000 tracked assignees.

#28,608
of 50,000 US assignees by volume: Top 31%
by Innovation Score (42.2/100): 22.3
avg claims per patent: -20%
filing velocity, last 5 yrs

Portfolio overview

Dura-line Llc has been granted 9 US utility patents between 2016 and 2023, placing Dura-line Llc at rank #28,608 across all assignees tracked by PlainPatent. This portfolio spans 16 distinct Cooperative Patent Classification (CPC) subclasses, averaging 22.3 claims per patent with primary concentration in F16L (PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL). As a US Corporation, Dura-line Llc is one of the more focused assignees in the PatentsView dataset. By volume, Dura-line sits between Drake Holdings, Inc. (9 patents, rank #28,604) and Dürr Dental SE (9 patents, rank #28,612) - the closest US assignees by grant volume. The composite Innovation Score of 42.2/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 4 grants, compared with 5 in the 2015–2019 window, a -20% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The US Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Dura-line Llc's 22.3 average claims per patent reflects complex, broadly scoped inventions that are difficult for competitors to design around, while concentration in 16 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Dura-line Llc against peers pursuing similar technology classes.

Drake Holdings

9
Drive CJSC

9
Dronedeploy

9
Dupont Nursery

9
Duraplas

9
Dust Free

9
Dynaloy

9
DÜRR Dental SE

9
Dura-line ◀

9

What this shows Dura-line holds 9 patents at rank #28,608, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dura-line

By rank, the assignees closest to #28,608 in granted patent volume.

Leaders in F16L (Pipes)

Other assignees with the most granted patents in Dura-line's primary technology class.

Dura-line's Innovation Score vs. every tracked assignee

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

42 Top 31% higher than 69% of 50,000 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 · 2016–2023

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Dura-line Llc patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	11.1%
2017	1	11.1%
2018	1	11.1%
2019	2	22.2%
2020	1	11.1%
2023	3	33.3%

Which technologies does Dura-line Llc patent most?

F16L - PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL 6

B29C - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 4

G01S - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES 4

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 4

F24F - AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING 4

C10M - LUBRICATING COMPOSITIONS ; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION 2

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 2

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 2

A47C - CHAIRS; SOFAS; BEDS 2

C10N - INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS 2

B60P - VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS 1

B65H - HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES 1

G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR 1

G01V - GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS 1

H02G - INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES 1

Top 15 of 16 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Complex

Velocity Declining

Where it ranks

Overall rank by patents

#28,608

Across all tracked assignees

Innovation Score

42.2 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Dura-line Llc hold?

Dura-line Llc holds 9 US granted patents filed between 2016 and 2023, spanning 16 technology areas.

What is Dura-line Llc's Innovation Score?

Dura-line Llc has an Innovation Score of 42.2 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Dura-line Llc focus on?

Dura-line Llc's top technology area is F16L (PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL) with 6 patents. The company has filed patents in 16 CPC subclasses total.

Is Dura-line Llc's patent filing rate increasing or decreasing?

Dura-line Llc's recent filing velocity is -20% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Dura-line Llc's patents?

Dura-line Llc's patents average 22.3 claims each. This indicates complex, broadly scoped patents that are harder for competitors to design around.

How is the Dura-line 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.

How to use this portfolio

Dura-line's 9 grants land it in the top 31% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Dura-line ranks #28,608 of 50,000. Top 50 holders
Most of this portfolio concentrates in F16L - see who else leads that technology area. F16L leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team

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.