Where does Changsha University OF Science AND Technology rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Changsha University OF Science AND Technology ranks #7,125 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 Changsha University OF Science AND Technology hold?

Changsha University OF Science AND Technology holds 46 US utility patents granted between 2020 and 2025, spanning 60 technology areas.

What is Changsha University OF Science AND Technology's Innovation Score?

Changsha University OF Science AND Technology has an Innovation Score of 62.1 out of 100 (top 3% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Changsha University OF Science AND Technology's patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Changsha University OF Science AND Technology.

What does claim depth mean for Changsha University OF Science AND Technology's patents?

Changsha University OF Science AND Technology's patents average 8.3 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Changsha University OF Science AND Technology

Q: What technology areas does Changsha University OF Science AND Technology focus on?

Changsha University OF Science AND Technology's top technology area is G01N (Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties) with 11 patents, ranking #1,329 of 7,863 assignees active in that subclass. Grants appear in 60 CPC subclasses total.

Q: How is the Changsha University OF Science 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 - 46 granted patents across 60 technology areas, recorded in grant years 2020–2025. 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: G01N (Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Changsha ranks #7,125 of 49,997 tracked US assignees by granted-patent volume, with 46 patents across 60 technology areas.

#7,125
of 49,997 US assignees by volume: Top 3%
by Innovation Score (62.1/100): 8.3
avg claims per patent

USPTO PatentsView assignee plate

Corpus R7125 · Foreign Corporation #7,125 · 46 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-WIDE · INNOV-STRONG · CLAIMS-PAR · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-SMALL 46 grants
UPPER-Q #7,125/49,997
PHOTO-FINISH Breeo
CPC-WIDE G01N · 60 areas
INNOV-STRONG 62.1/100
CLAIMS-PAR 8.3 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2020–2025 · 6y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Breeo, 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 Changsha’s 62.1 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 13.3 pts (21%) Velocity 18.8 pts (30%) Breadth 25.0 pts (40%) Claim depth 5.0 pts (8%)

Qualcomm Incorporated · highest

85
Global Life… · near

62
Changsha University… · this assignee

62
ICM · near

62
Logitech Europe · near

62
Insurance Services… · near

62
3D Lighting… · lowest

7

What this shows Changsha's Innovation Score is 62.1/100 (top 3% 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 Changsha?

Each dot is one of Changsha’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). Changsha’s own 8.3 claims/patent is at or below the 13.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Changsha's grant cadence moved

Grant history spans 2020–2025. Across complete PatentsView years, output peaked in 2022 at 15 grants and bottomed in 2020 at 4. Lead class G01N accounts for 23.9% of the portfolio across 60 subclasses. Volume neighbours: Breeo, LLC (#7,121) and Calgary Scientific Inc. (#7,129).

Changsha's three-year grant acceleration

Changsha University OF Science AND Technology shows 31 grants in 2022–2024 against only 11 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.

Breeo

46
BÜHLER Motor

46
C Uyemura &

46
Canon Components

46
CK Materials LAB

46
Crisi Medical Sys…

46
Cytec Technology

46
Calgary Scientific

46
Changsha Universi… ◀

46

What this shows Changsha holds 46 patents at rank #7,125, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Changsha

By rank, the assignees closest to #7,125 in granted patent volume.

Leaders in G01N (Investigating OR Analysing Materials BY Determining Their…)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Changsha, neither rank-band nor same-CPC leaders (those blocks stay above). In G01N (Investigating OR Analysing Materials BY Determining Their…), Changsha ranks #1,329 of 7,863 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (62 here).

ICM, Inc. 62 Logitech Europe S.A. 62 Global Life Sciences Solutions USA LLC 62 Insurance Services Office, Inc. 62

Changsha's Innovation Score vs. every tracked assignee

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

62 Top 3% higher than 97% 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 · 2020–2025

Grants by year

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

View data table

Changsha University OF Science AND Technology patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	4	8.7%
2021	7	15.2%
2022	15	32.6%
2023	8	17.4%
2024	8	17.4%
2025partial year	4	8.7%

Which technologies does Changsha University OF Science AND Technology patent most?

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 11

E01D - Construction OF Bridges, ; Elevated ROADWAYS; OR VIADUCTS; Assembly OF Bridges 9

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 4

B65G - Transport OR Storage Devices, e.g. Conveyors FOR Loading OR Tipping, Shop Conveyor Systems OR Pneumatic Tube Conveyors 4

E01C - Construction OF, OR Surfaces FOR, Roads, Sports Grounds, OR THE LIKE; Machines OR Auxiliary Tools FOR Construction OR Repair 4

G01M - Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR 3

B24B - Machines, Devices, OR Processes FOR Grinding OR Polishing ; Dressing OR Conditioning OF Abrading SURFACES; Feeding OF Grinding, Polishing, OR Lapping Agents 3

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 3

E02D - FOUNDATIONS; EXCAVATIONS; Embankments ; Underground OR Underwater Structures 3

B23H - Working OF Metal BY THE Action OF A High Concentration OF Electric Current ON A Workpiece Using AN Electrode Which Takes THE Place OF A TOOL; Such Working Combined With Other Forms OF Working OF Metal 2

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 2

A23L - Foods, Foodstuffs OR Non-alcoholic Beverages, NOT Otherwise Provided FOR; Preparation OR Treatment Thereof 2

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 2

F16F - SPRINGS; SHOCK-ABSORBERS; Means FOR Damping Vibration 2

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 2

Top 15 of 60 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

Changsha University OF Science AND Technology's patent record in context - here's where to go next.

Changsha University OF Science AND Technology's lead technology class is G01N (Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties), 23.9% of its portfolio - see every assignee active in that class. Explore G01N
Ranked #7,125 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Changsha University OF Science AND Technology against Breeo, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 62.1/100 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.