Where does Central South University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Central South University ranks #3,590 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 Central South University hold?

Central South University holds 102 US utility patents granted between 2015 and 2025, spanning 110 technology areas.

What is Central South University's Innovation Score?

Central South University has an Innovation Score of 67.6 out of 100 (top 1% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Central South University focus on?

Central South University's top technology area is C22C (Alloys) with 18 patents, ranking #99 of 948 assignees active in that subclass. Grants appear in 110 CPC subclasses total.

Is Central South University's patent grant rate increasing or decreasing?

Central South University's recent grant velocity is +722% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Central South University's patents?

Central South University's patents average 11.0 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 Central South University 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 Government

Central South University

USPTO PatentsView assignee record - 102 granted patents across 110 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: C22C (Alloys).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Central ranks #3,590 of 49,997 tracked US assignees by granted-patent volume, with 102 patents across 110 technology areas.

#3,590
of 49,997 US assignees by volume: Top 1%
by Innovation Score (67.6/100): 11.0
avg claims per patent: +722%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R3590 · Foreign Government #3,590 · 102 grants

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

GRANTS-MID 102 grants
TOP-DECILE #3,590/49,997
PHOTO-FINISH Afero
CPC-WIDE C22C · 110 areas
INNOV-STRONG 67.6/100
CLAIMS-PAR 11.0 claims/avg
TYPE-FRNGOV Foreign Gov
VEL-SURGE +722% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Afero, 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 Central’s 67.6 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 16.0 pts (24%) Velocity 20.0 pts (30%) Breadth 25.0 pts (37%) Claim depth 6.6 pts (10%)

Qualcomm Incorporated · highest

85
Allegro MicroSystems · near

68
Infineon Austria · near

68
Lawrence Livermore… · near

68
Central South… · this assignee

68
Viavi Solutions · near

68
3D Lighting… · lowest

7

What this shows Central's Innovation Score is 67.6/100 (top 1% 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 Central?

Each dot is one of Central’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). Central’s own 11.0 claims/patent is at or below the 15.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Central's grant cadence moved

Between 2020–2024, Central South University received 74 grants versus 9 in 2015–2019 (+722% equal-window velocity, top decile growth). Across complete PatentsView years, output peaked in 2024 at 32 grants and bottomed in 2015 at 1. Lead class C22C accounts for 17.6% of the portfolio across 110 subclasses. Volume neighbours: Amarin Pharmaceuticals Ireland Limited (#3,586) and G.D Societa' PER Azioni (#3,594).

Central's three-year grant acceleration

From 2019–2021 to 2022–2024, Central South University moved from 20 to 61 grants (3.05x 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 #81. See the growth leaderboard.

Amarin Pharmaceut…

102
Afero

102
Aveva Software

102
Bostik

102
Colder Products

102
Corcept Therapeut…

102
Dupont Nutrition…

102
G D Societa' PER…

102
Central South Uni… ◀

102

What this shows Central holds 102 patents at rank #3,590, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Central

By rank, the assignees closest to #3,590 in granted patent volume.

Leaders in C22C (Alloys)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Central, neither rank-band nor same-CPC leaders (those blocks stay above). In C22C (Alloys), Central ranks #99 of 948 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (68 here).

Lawrence Livermore National Security, LLC 68 Viavi Solutions Inc. 68 Allegro MicroSystems, LLC 68 Infineon Technologies Austria AG 68

Similar claim depth

Nearest assignees by average claims per patent (11.0 here).

Nippon Paper Industries Co., Ltd. 11.0 avg Hyundai Transys Inc. 11.0 avg NeoMed, Inc. 11.0 avg Japan Cash Machine Co., Ltd. 11.0 avg

Central's Innovation Score vs. every tracked assignee

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

68 Top 1% higher than 99% 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

Central South University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	1.0%
2018	1	1.0%
2019	7	6.9%
2020	6	5.9%
2021	7	6.9%
2022	11	10.8%
2023	18	17.6%
2024	32	31.4%
2025partial year	19	18.6%

Which technologies does Central South University patent most?

C22C - Alloys 18

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 15

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 13

B22F - Working Metallic POWDER; Manufacture OF Articles From Metallic POWDER; Making Metallic Powder ; Apparatus OR Devices Specially Adapted FOR Metallic Powder 12

C01G - Compounds Containing Metals NOT Covered BY Subclasses C01d OR C01f 9

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 7

B03D - FLOTATION; Differential Sedimentation 7

C22F - Changing THE Physical Structure OF Non-ferrous Metals AND Non-ferrous Alloys 7

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 6

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 6

B01D - Separation 6

B33Y - Additive Manufacturing, i.e. Manufacturing OF Three-dimensional [3-D] Objects BY Additive Deposition, Additive Agglomeration OR Additive Layering, e.g. BY 3-D Printing, Stereolithography OR Selective Laser Sintering 5

C22B - Production AND Refining OF Metals ; Pretreatment OF RAW Materials 5

G06T - Image Data Processing OR Generation, IN General 5

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 5

Top 15 of 110 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

Central South University's patent record in context - here's where to go next.

Central South University's lead technology class is C22C (Alloys), 17.6% of its portfolio - see every assignee active in that class. Explore C22C
Ranked #3,590 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Central South University against Amarin Pharmaceuticals Ireland Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 67.6/100 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.