Where does China University OF Petroleum (EAST CHINA) rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), China University OF Petroleum (EAST CHINA) ranks #1,922 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 China University OF Petroleum (EAST CHINA) hold?

China University OF Petroleum (EAST CHINA) holds 209 US utility patents granted between 2016 and 2025, spanning 85 technology areas.

What is China University OF Petroleum (EAST CHINA)'s Innovation Score?

China University OF Petroleum (EAST CHINA) has an Innovation Score of 55.5 out of 100 (top 7% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is China University OF Petroleum (EAST CHINA)'s patent grant rate increasing or decreasing?

China University OF Petroleum (EAST CHINA)'s recent grant velocity is +207% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for China University OF Petroleum (EAST CHINA)'s patents?

China University OF Petroleum (EAST CHINA)'s patents average 9.3 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 China University OF Petroleum (EAST CHINA) 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

China University OF Petroleum (EAST CHINA)

Q: What technology areas does China University OF Petroleum (EAST CHINA) focus on?

China University OF Petroleum (EAST CHINA)'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 92 patents. Grants appear in 85 CPC subclasses total.

USPTO PatentsView assignee record - 209 granted patents across 85 technology areas, recorded in grant years 2016–2025. 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, China ranks #1,922 of 49,997 tracked US assignees by granted-patent volume, with 209 patents across 85 technology areas.

#1,922
of 49,997 US assignees by volume: Top 7%
by Innovation Score (55.5/100): 9.3
avg claims per patent: +207%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1922 · Foreign Corporation #1,922 · 209 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MID 209 grants
TOP-DECILE #1,922/49,997
PHOTO-FINISH Institute of…
CPC-WIDE E21B · 85 areas
INNOV-PAR 55.5/100
CLAIMS-PAR 9.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +207% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Institute of Geology and Geophysics, Chinese Academy of Sciences (±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.

Qualcomm Incorporated · highest

85
Metal Industries… · near

56
Weber-Stephen Products · near

56
Adeia Imaging · near

56
China University OF… · this assignee

56
King Saud University · near

56
3D Lighting… · lowest

7

What this shows China's Innovation Score is 55.5/100 (top 7% 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.

How China's grant cadence moved

Between 2020–2024, China University OF Petroleum (EAST CHINA) received 135 grants versus 44 in 2015–2019 (+207% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2024 at 38 grants and bottomed in 2016 at 1. Lead class E21B accounts for 44% of the portfolio across 85 subclasses. Volume neighbours: Sato Corporation (#1,918) and Shure Acquisition Holdings, Inc. (#1,926).

China's three-year grant acceleration

From 2019–2021 to 2022–2024, China University OF Petroleum (EAST CHINA) moved from 81 to 79 grants (0.97x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #1,249. See the growth leaderboard.

Sato

210
Solvay Specialty…

210
THE Clorox

210
icontrol Networks

210
Institute of Geol…

209
Lego A/S

209
Nabors Drilling U…

209
Shure Acquisition…

209
China University… ◀

209

What this shows China holds 209 patents at rank #1,922, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near China

By rank, the assignees closest to #1,922 in granted patent volume.

Leaders in E21B (Earth OR Rock Drilling)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for China, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (56 here).

King Saud University 56 Adeia Imaging LLC 56 Weber-Stephen Products LLC 56 Metal Industries Research & Development Centre 56

Similar claim depth

Nearest assignees by average claims per patent (9.3 here).

Tokuyama Corporation 9.3 avg Murata Machinery, Ltd. 9.3 avg Pioneer Corporation 9.3 avg National University Corporation Gunma University 9.3 avg

China's Innovation Score vs. every tracked assignee

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

56 Top 7% higher than 93% 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 · 2016–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

China University OF Petroleum (EAST CHINA) patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	0.5%
2017	13	6.2%
2018	5	2.4%
2019	25	12.0%
2020	29	13.9%
2021	27	12.9%
2022	20	9.6%
2023	21	10.0%
2024	38	18.2%
2025partial year	30	14.4%

Which technologies does China University OF Petroleum (EAST CHINA) patent most?

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 92

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 62

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 35

G06F - Electric Digital Data Processing 20

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 20

G01V - GEOPHYSICS; Gravitational MEASUREMENTS; Detecting Masses OR OBJECTS; Tags 18

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 17

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 13

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 12

C10G - Cracking Hydrocarbon OILS; Production OF Liquid Hydrocarbon Mixtures, e.g. BY Destructive Hydrogenation, Oligomerisation, Polymerisation ; Recovery OF Hydrocarbon Oils From Oil-shale, Oil-sand, OR GASES; Refining Mixtures Mainly Consisting OF HYDROCARBONS; Reforming OF NAPHTHA; Mineral Waxes 10

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 10

B01D - Separation 7

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 7

C07C - Acyclic OR Carbocyclic Compounds 6

Y02A - Technologies FOR Adaptation TO Climate Change 6

Top 15 of 85 technology areas

Where it ranks

Overall rank by patents

#1,922

of 49,997 tracked assignees

Innovation Score

55.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

China University OF Petroleum (EAST CHINA)'s patent record in context - here's where to go next.

China University OF Petroleum (EAST CHINA)'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), 44% of its portfolio - see every assignee active in that class. Explore E21B
Ranked #1,922 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare China University OF Petroleum (EAST CHINA) against Sato Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 55.5/100 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.