Where does Oilfield Equipment Development Center Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Oilfield Equipment Development Center Limited ranks #23,122 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 Oilfield Equipment Development Center Limited hold?

Oilfield Equipment Development Center Limited holds 12 US utility patents granted between 2015 and 2025, spanning 11 technology areas.

What is Oilfield Equipment Development Center Limited's Innovation Score?

Oilfield Equipment Development Center Limited 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%).

Is Oilfield Equipment Development Center Limited's patent grant rate increasing or decreasing?

Oilfield Equipment Development Center Limited's recent grant velocity is -57% 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 Oilfield Equipment Development Center Limited's patents?

Oilfield Equipment Development Center Limited's patents average 15.6 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Oilfield Equipment Development Center Limited

Q: What technology areas does Oilfield Equipment Development Center Limited focus on?

Oilfield Equipment Development Center 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 11 patents, ranking #341 of 1,363 assignees active in that subclass. Grants appear in 11 CPC subclasses total.

Q: How is the Oilfield Equipment Development Center 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 PatentsView assignee record - 12 granted patents across 11 technology areas, recorded in grant years 2015–2025. 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, Oilfield ranks #23,122 of 49,997 tracked US assignees by granted-patent volume, with 12 patents across 11 technology areas.

#23,122
of 49,997 US assignees by volume: 40th percentile
by Innovation Score (32.2/100): 15.6
avg claims per patent: -57%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R23122 · Foreign Corporation #23,122 · 12 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 12 grants
MID-PACK #23,122/49,997
PHOTO-FINISH Office Master
CPC-FOCUS E21B · 11 areas
INNOV-THIN 32.2/100
CLAIMS-RICH 15.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -57% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Office Master 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 Oilfield’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 8.9 pts (28%) Velocity 2.2 pts (7%) Breadth 11.7 pts (36%) Claim depth 9.3 pts (29%)

Qualcomm Incorporated · highest

85
Oilfield Equipment… · this assignee

32
3D Lighting… · lowest

7

What this shows Oilfield'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 Oilfield?

Each dot is one of Oilfield’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). Oilfield’s own 15.6 claims/patent is at or below the 16.5 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Oilfield's grants concentrate

Oilfield Equipment Development Center Limited is a focused PatentsView assignee: 11 CPC subclasses with 91.7% 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 2016 (3 grants) versus a trough of 1 in 2015. By volume, Oilfield sits between Oxehealth Limited and OnPoint Vision, Inc..

Oilfield's three-year grant acceleration

Oilfield Equipment Development Center Limited shows 1 grants in 2022–2024 against only 3 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.

Oxehealth

12
Oxytec

12
OZ Optics

12
Office Master

12
Olaeris

12
Olbrich

12
Olson IP

12
Onpoint Vision

12
Oilfield Equipmen… ◀

12

What this shows Oilfield holds 12 patents at rank #23,131, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Oilfield

By rank, the assignees closest to #23,131 in granted patent volume.

Leaders in E21B (Earth OR Rock Drilling)

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

Oilfield'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 · 2015–2025

Grants by year

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

View data table

Oilfield Equipment Development Center Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	8.3%
2016	3	25.0%
2017	1	8.3%
2018	1	8.3%
2019	1	8.3%
2020	1	8.3%
2021	1	8.3%
2024	1	8.3%
2025partial year	2	16.7%

Which technologies does Oilfield Equipment Development Center Limited patent most?

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 11

F04D - Non-positive-displacement Pumps 7

H02K - Dynamo-electric Machines 4

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 2

Y10T - Technical Subjects Covered BY Former US Classification 2

F05B - Indexing Scheme Relating TO Wind, Spring, Weight, Inertia OR Like Motors, TO Machines OR Engines FOR Liquids Covered BY Subclasses F03b, F03d AND F03g 2

F16J - Pistons ; CYLINDERS; Sealings 1

F03B - Machines OR Engines FOR Liquids 1

H01B - CABLES; CONDUCTORS; INSULATORS; Selection OF Materials FOR Their Conductive, Insulating OR Dielectric Properties 1

H01R - Electrically-conductive CONNECTIONS; Structural Associations OF A Plurality OF Mutually-insulated Electrical Connecting ELEMENTS; Coupling DEVICES; Current Collectors 1

H02G - Installation OF Electric Cables OR Lines, OR OF Combined Optical AND Electric Cables OR Lines 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

Oilfield Equipment Development Center Limited's patent record in context - here's where to go next.

Oilfield Equipment Development Center 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), 91.7% of its portfolio - see every assignee active in that class. Explore E21B
Ranked #23,122 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Oilfield Equipment Development Center Limited against Oxehealth Limited, 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.