Where does National Oilwell Varco Denmark I/S rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), National Oilwell Varco Denmark I/S ranks #8,080 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 National Oilwell Varco Denmark I/S hold?

National Oilwell Varco Denmark I/S holds 40 US utility patents granted between 2015 and 2024, spanning 21 technology areas.

What is National Oilwell Varco Denmark I/S's Innovation Score?

National Oilwell Varco Denmark I/S has an Innovation Score of 44.5 out of 100 (top 26% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is National Oilwell Varco Denmark I/S's patent grant rate increasing or decreasing?

National Oilwell Varco Denmark I/S's recent grant velocity is -40% 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 National Oilwell Varco Denmark I/S's patents?

National Oilwell Varco Denmark I/S's patents average 22.3 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 National Oilwell Varco Denmark I/S 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

National Oilwell Varco Denmark I/S

Q: What technology areas does National Oilwell Varco Denmark I/S focus on?

National Oilwell Varco Denmark I/S'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 38 patents, ranking #40 of 1,907 assignees active in that subclass. Grants appear in 21 CPC subclasses total.

USPTO PatentsView assignee record - 40 granted patents across 21 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: F16L (PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, National ranks #8,080 of 49,997 tracked US assignees by granted-patent volume, with 40 patents across 21 technology areas.

#8,080
of 49,997 US assignees by volume: Top 26%
by Innovation Score (44.5/100): 22.3
avg claims per patent: -40%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8080 · Foreign Corporation #8,080 · 40 grants

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

GRANTS-SMALL 40 grants
UPPER-Q #8,080/49,997
PHOTO-FINISH Markem-Imaje
CPC-FOCUS F16L · 21 areas
INNOV-PAR 44.5/100
CLAIMS-DENSE 22.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -40% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Markem-Imaje Corporation (±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 National’s 44.5 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 (29%) Velocity 2.1 pts (5%) Breadth 16.2 pts (36%) Claim depth 13.4 pts (30%)

Qualcomm Incorporated · highest

85
K2 Software · near

44
Medimpact Healthcare… · near

44
National Oilwell… · this assignee

44
Tokamak Energy · near

44
TomTom Navigation B V · near

44
3D Lighting… · lowest

7

What this shows National's Innovation Score is 44.5/100 (top 26% 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 National?

Each dot is one of National’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). National’s own 22.3 claims/patent is ABOVE the 17.9 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where National's grants concentrate

National Oilwell Varco Denmark I/S is a focused PatentsView assignee: 21 CPC subclasses with 95% of grants classified under F16L (PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General). Peak complete grant year is 2016 (7 grants) versus a trough of 1 in 2024. By volume, National sits between Markem-Imaje Corporation and Oceus Networks, LLC.

National's three-year grant acceleration

National Oilwell Varco Denmark I/S shows 4 grants in 2022–2024 against only 13 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.

Markem-imaje

40
Milacron

40
NEC (China)

40
Norwegian Univers…

40
Neophotonics

40
New York Blood Ce…

40
Numerex

40
Oceus Networks

40
National Oilwell… ◀

40

What this shows National holds 40 patents at rank #8,081, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near National

By rank, the assignees closest to #8,081 in granted patent volume.

Leaders in F16L (Pipes)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for National, neither rank-band nor same-CPC leaders (those blocks stay above). In F16L (Pipes), National ranks #40 of 1,907 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (44 here).

Tokamak Energy Ltd 44 TomTom Navigation B.V. 44 Medimpact Healthcare Systems, Inc. 44 K2 Software, Inc. 44

National's Innovation Score vs. every tracked assignee

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

44 Top 26% higher than 74% 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

National Oilwell Varco Denmark I/S patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	6	15.0%
2016	7	17.5%
2017	6	15.0%
2018	4	10.0%
2019	2	5.0%
2020	4	10.0%
2021	7	17.5%
2022	3	7.5%
2024	1	2.5%

Which technologies does National Oilwell Varco Denmark I/S patent most?

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 38

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 14

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

Y10T - Technical Subjects Covered BY Former US Classification 5

G01M - Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR 3

G01K - Measuring TEMPERATURE; Measuring Quantity OF HEAT; Thermally-sensitive Elements NOT Otherwise Provided FOR 3

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 3

B63B - Ships OR Other Waterborne VESSELS; Equipment FOR Shipping 3

G01L - Measuring Force, Stress, Torque, Work, Mechanical Power, Mechanical Efficiency, OR Fluid Pressure 2

B29D - Producing Particular Articles From Plastics OR From Substances IN A Plastic State 1

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 1

C08L - Compositions OF Macromolecular Compounds 1

B23P - Metal-working NOT Otherwise Provided FOR; Combined OPERATIONS; Universal Machine Tools 1

C23F - Non-mechanical Removal OF Metallic Material From Surface ; Inhibiting Corrosion OF Metallic Material OR Incrustation IN GENERAL; Multi-step Processes FOR Surface Treatment OF Metallic Material Involving AT Least ONE Process Provided FOR IN Class C23 AND AT Least ONE Process Covered BY Subclass C21d 1

G01D - Measuring NOT Specially Adapted FOR A Specific VARIABLE; Arrangements FOR Measuring TWO OR More Variables NOT Covered IN A Single Other SUBCLASS; Tariff Metering APPARATUS; Measuring OR Testing NOT Otherwise Provided FOR 1

Top 15 of 21 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

National Oilwell Varco Denmark I/S's patent record in context - here's where to go next.

National Oilwell Varco Denmark I/S's lead technology class is F16L (PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General), 95% of its portfolio - see every assignee active in that class. Explore F16L
Ranked #8,080 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare National Oilwell Varco Denmark I/S against Markem-Imaje Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 44.5/100 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.