Where does Nanjing University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Nanjing University ranks #1,621 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 Nanjing University hold?

Nanjing University holds 255 US utility patents granted between 2015 and 2025, spanning 142 technology areas.

What is Nanjing University's Innovation Score?

Nanjing University has an Innovation Score of 63.3 out of 100 (top 2% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Nanjing University focus on?

Nanjing University's top technology area is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge) with 75 patents, ranking #7 of 1,366 assignees active in that subclass. Grants appear in 142 CPC subclasses total.

Is Nanjing University's patent grant rate increasing or decreasing?

Nanjing University's recent grant velocity is +73% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Nanjing University's patents?

Nanjing University's patents average 9.0 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 Nanjing 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 Corporation

Nanjing University

USPTO PatentsView assignee record - 255 granted patents across 142 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: C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Nanjing ranks #1,621 of 49,997 tracked US assignees by granted-patent volume, with 255 patents across 142 technology areas.

#1,621
of 49,997 US assignees by volume: Top 2%
by Innovation Score (63.3/100): 9.0
avg claims per patent: +73%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1621 · Foreign Corporation #1,621 · 255 grants

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

GRANTS-MID 255 grants
TOP-DECILE #1,621/49,997
PHOTO-FINISH Biomerieux
CPC-WIDE C02F · 142 areas
INNOV-STRONG 63.3/100
CLAIMS-PAR 9.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +73% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Biomerieux, 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 Nanjing’s 63.3 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 19.2 pts (30%) Velocity 13.7 pts (22%) Breadth 25.0 pts (39%) Claim depth 5.4 pts (9%)

Qualcomm Incorporated · highest

85
Intel IP · near

63
Nanjing University · this assignee

63
Terrapower · near

63
Cerner Innovation · near

63
Japan Aviation… · near

63
3D Lighting… · lowest

7

What this shows Nanjing's Innovation Score is 63.3/100 (top 2% 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 Nanjing?

Each dot is one of Nanjing’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). Nanjing’s own 9.0 claims/patent is at or below the 13.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Nanjing's grant cadence moved

Between 2020–2024, Nanjing University received 140 grants versus 81 in 2015–2019 (+73% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2024 at 44 grants and bottomed in 2016 at 14. Lead class C02F accounts for 29.4% of the portfolio across 142 subclasses. Volume neighbours: Biomerieux, Inc. (#1,617) and Aruba Networks, Inc. (#1,625).

Nanjing's three-year grant acceleration

From 2019–2021 to 2022–2024, Nanjing University moved from 51 to 105 grants (2.06x 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 #200. See the growth leaderboard.

Biomerieux

255
Givaudan

255
Memjet Technology

255
Merit Medical Sys…

255
Z124

255
Nanjing University ◀

255
Mitsui Mining & S…

254
Shin-etsu Handotai

254
Aruba Networks

253

What this shows Nanjing holds 255 patents at rank #1,621, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Nanjing

By rank, the assignees closest to #1,621 in granted patent volume.

Leaders in C02F (Treatment OF Water)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Nanjing, neither rank-band nor same-CPC leaders (those blocks stay above). In C02F (Treatment OF Water), Nanjing ranks #7 of 1,366 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (63 here).

Terrapower, LLC 63 Intel IP Corporation 63 Cerner Innovation, Inc. 63 Japan Aviation Electronics Industry, Limited 63

Similar claim depth

Nearest assignees by average claims per patent (9.0 here).

Carvana, LLC 9.0 avg Daido Metal Company Ltd. 9.0 avg National University Corporation Okayama University 9.0 avg I-sens, Inc. 9.0 avg

Nanjing's Innovation Score vs. every tracked assignee

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

63 Top 2% higher than 98% 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

Nanjing University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	15	5.9%
2016	14	5.5%
2017	17	6.7%
2018	19	7.5%
2019	16	6.3%
2020	18	7.1%
2021	17	6.7%
2022	28	11.0%
2023	33	12.9%
2024	44	17.3%
2025partial year	34	13.3%

Which technologies does Nanjing University patent most?

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 75

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 43

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 28

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 24

B01D - Separation 23

G06F - Electric Digital Data Processing 17

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 15

G06T - Image Data Processing OR Generation, IN General 14

C12N - Microorganisms OR ENZYMES; Compositions THEREOF; Propagating, Preserving, OR Maintaining MICROORGANISMS; Mutation OR Genetic ENGINEERING; Culture Media 13

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 12

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 12

H04N - Pictorial Communication, e.g. Television 12

C07K - Peptides 10

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 9

Y02A - Technologies FOR Adaptation TO Climate Change 9

Top 15 of 142 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

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

Nanjing University's lead technology class is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge), 29.4% of its portfolio - see every assignee active in that class. Explore C02F
Ranked #1,621 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Nanjing University against Biomerieux, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 63.3/100 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.