Where does Canrig Drilling Technology Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Canrig Drilling Technology Ltd. ranks #9,728 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 Canrig Drilling Technology Ltd. hold?

Canrig Drilling Technology Ltd. holds 32 US utility patents granted between 2015 and 2020, spanning 18 technology areas.

What is Canrig Drilling Technology Ltd.'s Innovation Score?

Canrig Drilling Technology Ltd. has an Innovation Score of 39.1 out of 100 (top 39% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Canrig Drilling Technology Ltd.'s patent grant rate increasing or decreasing?

Canrig Drilling Technology Ltd.'s recent grant velocity is -97% 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 Canrig Drilling Technology Ltd.'s patents?

Canrig Drilling Technology Ltd.'s patents average 20.0 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 Canrig Drilling Technology Ltd. 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

Canrig Drilling Technology Ltd.

Q: What technology areas does Canrig Drilling Technology Ltd. focus on?

Canrig Drilling Technology Ltd.'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 23 patents, ranking #153 of 1,363 assignees active in that subclass. Grants appear in 18 CPC subclasses total.

USPTO PatentsView assignee record - 32 granted patents across 18 technology areas, recorded in grant years 2015–2020. 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, Canrig ranks #9,728 of 49,997 tracked US assignees by granted-patent volume, with 32 patents across 18 technology areas.

#9,728
of 49,997 US assignees by volume: Top 39%
by Innovation Score (39.1/100): 20.0
avg claims per patent: -97%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R9728 · US Corporation #9,728 · 32 grants

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

GRANTS-SMALL 32 grants
UPPER-Q #9,728/49,997
PHOTO-FINISH Canyon Bicycles
CPC-FOCUS E21B · 18 areas
INNOV-THIN 39.1/100
CLAIMS-DENSE 20.0 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -97% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Canyon Bicycles GmbH (±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 Canrig’s 39.1 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 (31%) Velocity 0.0 pts (0%) Breadth 15.0 pts (38%) Claim depth 12.0 pts (31%)

Qualcomm Incorporated · highest

85
Canrig Drilling… · this assignee

39
Center of Human-Cent… · near

39
OSI Pharmaceuticals · near

39
GKN Driveline North… · near

39
Tokai Kogyo · near

39
3D Lighting… · lowest

7

What this shows Canrig's Innovation Score is 39.1/100 (top 39% 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 Canrig?

Each dot is one of Canrig’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). Canrig’s own 20.0 claims/patent is ABOVE the 16.8 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Canrig's grants concentrate

Canrig Drilling Technology Ltd. is a focused PatentsView assignee: 18 CPC subclasses with 71.9% 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 2017 (13 grants) versus a trough of 1 in 2020. By volume, Canrig sits between Circadence Corporation and Chime Financial, Inc..

Circadence

32
Connectify

32
Continental Struc…

32
CPI Card Group-co…

32
Canyon Bicycles

32
Ceres Intellectua…

32
Chang Gung Memori…

32
Chime Financial

32
Canrig Drilling T… ◀

32

What this shows Canrig holds 32 patents at rank #9,736, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Canrig

By rank, the assignees closest to #9,736 in granted patent volume.

Leaders in E21B (Earth OR Rock Drilling)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Canrig, neither rank-band nor same-CPC leaders (those blocks stay above). In E21B (Earth OR Rock Drilling), Canrig ranks #153 of 1,363 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (39 here).

Center of Human-Centered Interaction for Coexistence 39 OSI Pharmaceuticals, LLC 39 GKN Driveline North America, Inc. 39 Tokai Kogyo Co., Ltd. 39

Canrig's Innovation Score vs. every tracked assignee

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

39 Top 39% higher than 61% 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 · 2015–2020

Grants by year

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

View data table

Canrig Drilling Technology Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	15.6%
2016	9	28.1%
2017	13	40.6%
2018	2	6.3%
2019	2	6.3%
2020	1	3.1%

Which technologies does Canrig Drilling Technology Ltd. patent most?

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 23

H02K - Dynamo-electric Machines 5

H02P - Control OR Regulation OF Electric Motors, Electric Generators OR Dynamo-electric CONVERTERS; Controlling Transformers, Reactors OR Choke Coils 5

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 3

B66D - CAPSTANS; WINCHES; Tackles, e.g. Pulley BLOCKS; Hoists 2

Y10T - Technical Subjects Covered BY Former US Classification 2

G01M - Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR 2

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 1

B65G - Transport OR Storage Devices, e.g. Conveyors FOR Loading OR Tipping, Shop Conveyor Systems OR Pneumatic Tube Conveyors 1

G05D - Systems FOR Controlling OR Regulating Non-electric Variables 1

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 1

F16J - Pistons ; CYLINDERS; Sealings 1

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 1

F16N - Lubricating 1

G06F - Electric Digital Data Processing 1

Top 15 of 18 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

Canrig Drilling Technology Ltd.'s patent record in context - here's where to go next.

Canrig Drilling Technology Ltd.'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), 71.9% of its portfolio - see every assignee active in that class. Explore E21B
Ranked #9,728 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Canrig Drilling Technology Ltd. against Circadence Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 39.1/100 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.