Where does China University of Mining and Technology rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), China University of Mining and Technology ranks #1,532 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 Mining and Technology hold?

China University of Mining and Technology holds 272 US utility patents granted between 2015 and 2025, spanning 131 technology areas.

What is China University of Mining and Technology's Innovation Score?

China University of Mining and Technology has an Innovation Score of 52.5 out of 100 (top 10% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is China University of Mining and Technology's patent grant rate increasing or decreasing?

China University of Mining and Technology's recent grant velocity is +71% 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 Mining and Technology's patents?

China University of Mining and Technology's patents average 6.5 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

China University of Mining and Technology

Q: What technology areas does China University of Mining and Technology focus on?

China University of Mining and Technology's top technology area is E21F (Safety Devices, Transport, Filling-up, Rescue, Ventilation, OR Draining IN OR OF Mines OR Tunnels) with 70 patents, ranking #1 of 76 assignees active in that subclass. Grants appear in 131 CPC subclasses total.

Q: How is the China University of Mining and Technology 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 - 272 granted patents across 131 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: E21F (Safety Devices, Transport, Filling-up, Rescue, Ventilation, OR Draining IN OR OF Mines OR Tunnels).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, China ranks #1,532 of 49,997 tracked US assignees by granted-patent volume, with 272 patents across 131 technology areas.

#1,532
of 49,997 US assignees by volume: Top 10%
by Innovation Score (52.5/100): 6.5
avg claims per patent: +71%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1532 · Foreign Corporation #1,532 · 272 grants

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

GRANTS-MID 272 grants
TOP-DECILE #1,532/49,997
PHOTO-FINISH Acclarent
CPC-WIDE E21F · 131 areas
INNOV-PAR 52.5/100
CLAIMS-SPARSE 6.5 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +71% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Acclarent, 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 China’s 52.5 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 19.4 pts (37%) Velocity 4.2 pts (8%) Breadth 25.0 pts (48%) Claim depth 3.9 pts (7%)

Qualcomm Incorporated · highest

85
CFD Research · near

53
China University of… · this assignee

53
GKN Sinter Metals… · near

53
Included Health · near

53
Itrec B V · near

53
3D Lighting… · lowest

7

What this shows China's Innovation Score is 52.5/100 (top 10% 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 China?

Each dot is one of China’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). China’s own 6.5 claims/patent is at or below the 17.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How China's grant cadence moved

Between 2020–2024, China University of Mining and Technology received 152 grants versus 89 in 2015–2019 (+71% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2021 at 48 grants and bottomed in 2015 at 1. Lead class E21F accounts for 25.7% of the portfolio across 131 subclasses. Volume neighbours: Roche Sequencing Solutions, Inc. (#1,528) and Ionis Pharmaceuticals, Inc. (#1,536).

China's three-year grant acceleration

From 2019–2021 to 2022–2024, China University of Mining and Technology moved from 111 to 70 grants (0.63x 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 #2,365. See the growth leaderboard.

Roche Sequencing…

273
Valeo Schalter UN…

273
William Marsh Ric…

273
Acclarent

272
Woodward

272
China University… ◀

272
Central Glass

271
Fairchild Semicon…

271
Ionis Pharmaceuti…

271

What this shows China holds 272 patents at rank #1,532, 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 #1,532 in granted patent volume.

Leaders in E21F (Safety Devices)

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). In E21F (Safety Devices), China ranks #1 of 76 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (53 here).

Itrec B.V. 53 GKN Sinter Metals Engineering GmbH 53 CFD Research Corporation 53 Included Health, Inc. 53

Similar claim depth

Nearest assignees by average claims per patent (6.5 here).

Yazaki Corporation 6.5 avg Chapin Manufacturing, Inc. 6.5 avg Bradley Fixtures, LLC 6.5 avg Onkyo Corporation 6.5 avg

China's Innovation Score vs. every tracked assignee

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

53 Top 10% higher than 90% 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

China University of Mining and Technology patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	0.4%
2016	10	3.7%
2017	16	5.9%
2018	33	12.1%
2019	29	10.7%
2020	34	12.5%
2021	48	17.6%
2022	26	9.6%
2023	19	7.0%
2024	25	9.2%
2025partial year	31	11.4%

Which technologies does China University of Mining and Technology patent most?

E21F - Safety Devices, Transport, Filling-up, Rescue, Ventilation, OR Draining IN OR OF Mines OR Tunnels 70

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 49

E21D - SHAFTS; TUNNELS; GALLERIES; Large Underground Chambers 45

E21C - Mining OR Quarrying 42

B66B - ELEVATORS; Escalators OR Moving Walkways 31

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 26

B65G - Transport OR Storage Devices, e.g. Conveyors FOR Loading OR Tipping, Shop Conveyor Systems OR Pneumatic Tube Conveyors 22

G06F - Electric Digital Data Processing 14

G01L - Measuring Force, Stress, Torque, Work, Mechanical Power, Mechanical Efficiency, OR Fluid Pressure 11

H02P - Control OR Regulation OF Electric Motors, Electric Generators OR Dynamo-electric CONVERTERS; Controlling Transformers, Reactors OR Choke Coils 11

G01V - GEOPHYSICS; Gravitational MEASUREMENTS; Detecting Masses OR OBJECTS; Tags 9

G01B - Measuring Length, Thickness OR Similar Linear DIMENSIONS; Measuring ANGLES; Measuring AREAS; Measuring Irregularities OF Surfaces OR Contours 9

B66C - CRANES; Load-engaging Elements OR Devices FOR Cranes, Capstans, Winches, OR Tackles 8

G06T - Image Data Processing OR Generation, IN General 8

B03B - Separating Solid Materials Using Liquids OR Using Pneumatic Tables OR Jigs 8

Top 15 of 131 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

China University of Mining and Technology's patent record in context - here's where to go next.

China University of Mining and Technology's lead technology class is E21F (Safety Devices, Transport, Filling-up, Rescue, Ventilation, OR Draining IN OR OF Mines OR Tunnels), 25.7% of its portfolio - see every assignee active in that class. Explore E21F
Ranked #1,532 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare China University of Mining and Technology against Roche Sequencing Solutions, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 52.5/100 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.