Where does Cnpc USA Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Cnpc USA Corporation ranks #4,001 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 Cnpc USA Corporation hold?

Cnpc USA Corporation holds 90 US utility patents granted between 2015 and 2025, spanning 27 technology areas.

What is Cnpc USA Corporation's Innovation Score?

Cnpc USA Corporation has an Innovation Score of 54.1 out of 100 (top 8% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Cnpc USA Corporation's patent grant rate increasing or decreasing?

Cnpc USA Corporation's recent grant velocity is +195% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Cnpc USA Corporation's patents?

Cnpc USA Corporation's patents average 13.9 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 Cnpc USA Corporation 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

Cnpc USA Corporation

Q: What technology areas does Cnpc USA Corporation focus on?

Cnpc USA Corporation'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 71 patents, ranking #48 of 1,363 assignees active in that subclass. Grants appear in 27 CPC subclasses total.

USPTO PatentsView assignee record - 90 granted patents across 27 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

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Cnpc ranks #4,001 of 49,997 tracked US assignees by granted-patent volume, with 90 patents across 27 technology areas.

#4,001
of 49,997 US assignees by volume: Top 8%
by Innovation Score (54.1/100): 13.9
avg claims per patent: +195%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R4001 · US Corporation #4,001 · 90 grants

GRANTS-SMALL · TOP-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-USCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 90 grants
TOP-DECILE #4,001/49,997
PHOTO-FINISH Arktura
CPC-FOCUS E21B · 27 areas
INNOV-PAR 54.1/100
CLAIMS-RICH 13.9 claims/avg
TYPE-USCORP US Corporation
VEL-SURGE +195% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Arktura LLC (±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 Cnpc’s 54.1 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 15.6 pts (29%) Velocity 11.8 pts (22%) Breadth 18.4 pts (34%) Claim depth 8.4 pts (15%)

Qualcomm Incorporated · highest

85
AAC Acoustic… · near

54
Amogreentech · near

54
Cnpc USA · this assignee

54
Balluff · near

54
Tufts University · near

54
3D Lighting… · lowest

7

What this shows Cnpc's Innovation Score is 54.1/100 (top 8% 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 Cnpc?

Each dot is one of Cnpc’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). Cnpc’s own 13.9 claims/patent is ABOVE the 6.0 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Cnpc's grants concentrate

Cnpc USA Corporation is a focused PatentsView assignee: 27 CPC subclasses with 78.9% 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 2024 (15 grants) versus a trough of 2 in 2016. By volume, Cnpc sits between Arktura LLC and Duraflex Hong Kong Limited.

Cnpc's three-year grant acceleration

From 2019–2021 to 2022–2024, Cnpc USA Corporation moved from 22 to 39 grants (1.77x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Arktura

90
Bwxt mpower

90
Black Sesame

90
Chevron Oronite

90
Camco Manufacturi…

90
Compass Therapeut…

90
Dicastal North Am…

90
Duraflex Hong Kong

90
Cnpc USA ◀

90

What this shows Cnpc holds 90 patents at rank #4,000, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Cnpc

By rank, the assignees closest to #4,000 in granted patent volume.

Leaders in E21B (Earth OR Rock Drilling)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Cnpc, neither rank-band nor same-CPC leaders (those blocks stay above). In E21B (Earth OR Rock Drilling), Cnpc ranks #48 of 1,363 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (54 here).

Amogreentech Co., Ltd. 54 AAC Acoustic Technologies (Shanghai) Co., Ltd. 54 Tufts University 54 Balluff GMBH 54

Similar claim depth

Nearest assignees by average claims per patent (13.9 here).

Ansaldo Energia Switzerland AG 13.9 avg Venus Medtech (HANGZHOU), Inc. 13.9 avg VAT Holding AG 13.9 avg Sport Maska Inc. 13.9 avg

Cnpc's Innovation Score vs. every tracked assignee

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

54 Top 8% higher than 92% 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

Cnpc USA Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	5.6%
2016	2	2.2%
2017	2	2.2%
2018	5	5.6%
2019	5	5.6%
2020	12	13.3%
2021	5	5.6%
2022	10	11.1%
2023	14	15.6%
2024	15	16.7%
2025partial year	15	16.7%

Which technologies does Cnpc USA Corporation patent most?

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 71

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 39

C08L - Compositions OF Macromolecular Compounds 10

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 6

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 4

C22C - Alloys 3

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 3

B23P - Metal-working NOT Otherwise Provided FOR; Combined OPERATIONS; Universal Machine Tools 2

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 2

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 2

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 2

Y10T - Technical Subjects Covered BY Former US Classification 2

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 1

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 1

G06T - Image Data Processing OR Generation, IN General 1

Top 15 of 27 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

Cnpc USA Corporation's patent record in context - here's where to go next.

Cnpc USA Corporation'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), 78.9% of its portfolio - see every assignee active in that class. Explore E21B
Ranked #4,001 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Cnpc USA Corporation against Arktura LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 54.1/100 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.