Where does National Oilwell Varco UK Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), National Oilwell Varco UK Limited ranks #17,927 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 UK Limited hold?

National Oilwell Varco UK Limited holds 16 US utility patents granted between 2015 and 2024, spanning 6 technology areas.

What is National Oilwell Varco UK Limited's Innovation Score?

National Oilwell Varco UK Limited has an Innovation Score of 37.6 out of 100 (top 43% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is National Oilwell Varco UK Limited's patent grant rate increasing or decreasing?

National Oilwell Varco UK Limited's recent grant velocity is +0% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for National Oilwell Varco UK Limited's patents?

National Oilwell Varco UK Limited's patents average 20.8 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 UK Limited 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 UK Limited

Q: What technology areas does National Oilwell Varco UK Limited focus on?

National Oilwell Varco UK Limited's top technology area is E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells) with 13 patents, ranking #286 of 1,363 assignees active in that subclass. Grants appear in 6 CPC subclasses total.

USPTO PatentsView assignee record - 16 granted patents across 6 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: E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, National ranks #17,927 of 49,997 tracked US assignees by granted-patent volume, with 16 patents across 6 technology areas.

#17,927
of 49,997 US assignees by volume: Top 43%
by Innovation Score (37.6/100): 20.8
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R17927 · Foreign Corporation #17,927 · 16 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-DENSE · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MICRO 16 grants
MID-PACK #17,927/49,997
PHOTO-FINISH Multisorb
CPC-NARROW E21B · 6 areas
INNOV-THIN 37.6/100
CLAIMS-DENSE 20.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Multisorb Technologies, Inc. (±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 37.6 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 9.8 pts (26%) Velocity 6.7 pts (18%) Breadth 8.7 pts (23%) Claim depth 12.5 pts (33%)

Qualcomm Incorporated · highest

85
National Oilwell… · this assignee

38
3D Lighting… · lowest

7

What this shows National's Innovation Score is 37.6/100 (top 43% 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 20.8 claims/patent is ABOVE the 15.7 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 UK Limited is a focused PatentsView assignee: 6 CPC subclasses with 81.3% of grants classified under E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells). Peak complete grant year is 2015 (3 grants) versus a trough of 1 in 2024. By volume, National sits between Multisorb Technologies, Inc. and NEC Laboratories Europe GmbH.

National's three-year grant acceleration

National Oilwell Varco UK Limited shows 5 grants in 2022–2024 against only 5 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.

Multisorb

16
Nanchang O-film B…

16
Nanchang O-film O…

16
National Kaohsiun…

16
Navy Federal Cred…

16
NBD Nanotechnolog…

16
Nbe-therapeutics

16
NEC Laboratories…

16
National Oilwell… ◀

16

What this shows National holds 16 patents at rank #17,920, 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 #17,920 in granted patent volume.

Leaders in E21B (Earth OR Rock Drilling)

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

National's Innovation Score vs. every tracked assignee

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

38 Top 43% higher than 57% 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 UK Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	18.8%
2017	3	18.8%
2019	2	12.5%
2021	3	18.8%
2022	2	12.5%
2023	2	12.5%
2024	1	6.3%

Which technologies does National Oilwell Varco UK Limited patent most?

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 13

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 8

F16B - Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing 2

F16J - Pistons ; CYLINDERS; Sealings 1

B07B - Separating Solids From Solids BY Sieving, Screening, Sifting OR BY Using GAS CURRENTS; Separating BY Other DRY Methods Applicable TO Bulk Material, e.g. Loose Articles FIT TO BE Handled Like Bulk Material 1

B01D - Separation 1

Top 6 of 6 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 UK Limited's patent record in context - here's where to go next.

National Oilwell Varco UK Limited's lead technology class is E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells), 81.3% of its portfolio - see every assignee active in that class. Explore E21B
Ranked #17,927 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare National Oilwell Varco UK Limited against Multisorb Technologies, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 37.6/100 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.