Overall rank by patents
#1,621
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView Foreign Corporation
Nanjing University
USPTO PatentsView assignee record — 255 granted patents across 142 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C02F (TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE).
255
Total patents granted
142
CPC technology areas
9.0
Avg claims per patent
+115%
5-year filing velocity
Portfolio overview
Nanjing University has been granted 255 US utility patents between 2015 and 2025, placing Nanjing University at rank #1,621 across all assignees tracked by PlainPatent. This portfolio spans 142 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.0 claims per patent with primary concentration in C02F (TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE). As a Foreign Corporation, Nanjing University is one of the broader-portfolio assignees in the PatentsView dataset. The composite Innovation Score of 63.3/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.
Filing cadence tells the strategic story. Between 2020 and 2025 the company received 174 grants, compared with 81 in the 2015–2019 window — a +115% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.
Claim depth and technology breadth together indicate competitive posture. Nanjing University's 9.0 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a diversified footprint across 100+ CPC subclasses spreads risk across many technology fronts. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Nanjing University against peers pursuing similar technology classes.
How does Nanjing compare?
Granted US patents 2015–2025 versus the largest corporate holders — this company marked ◀
- Samsung
SAMSUNG ELECTRONICS CO., LTD.
106,890 patents
- International Bus…
International Business Machines Corporation
72,926 patents
- Canon 34,378
Canon Kabushiki Kaisha
34,378 patents
- LG 32,607
LG ELECTRONICS INC.
32,607 patents
- Taiwan Semiconduc… 31,041
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
31,041 patents
- Apple 30,560
Apple Inc.
30,560 patents
- Qualcomm Incorpor… 30,354
QUALCOMM Incorporated
30,354 patents
- Intel 27,498
Intel Corporation
27,498 patents
- Nanjing University ◀ 255
Nanjing University
255 patents
What this shows Nanjing holds 255 patents — placing it at rank #1,621 overall, well behind the volume leaders but ahead of the tens of thousands of smaller assignees in the dataset.
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
| 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% |
| 2025 | 34 | 13.3% |
Which technologies does Nanjing University patent most?
Top 15 of 142 technology areas
Patent Moat Analysis
Portfolio Volume Moderate
Tech Breadth Diversified
Claim Depth Simple
Velocity Accelerating
Frequently Asked Questions
How many patents does Nanjing University hold?
Nanjing University holds 255 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing 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. The company has filed patents in 142 CPC subclasses total.
Is Nanjing University's patent filing rate increasing or decreasing?
Nanjing University's recent filing velocity is +115% compared to the prior five-year period. This indicates accelerating innovation.
What does claim depth mean for Nanjing University's patents?
Nanjing University's patents average 9.0 claims each. This is relatively simple claim structure, typical for focused inventions.
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.
Learn More
Explore the patent dataset
C02F technology
Nanjing University's primary CPC class — all holders and yearly trends
Top 50 patent holders
See where Nanjing University ranks among the largest US patent assignees
All technology classes
Browse every CPC technology area by patent activity
How the score works
The four dimensions behind the Innovation Score
Related
Data sourced from USPTO PatentsView — official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial
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.
All federal data sources used on this page
- USPTO PatentsView — official U.S. Patent and Trademark Office bulk patent data. patentsview.org
- USPTO Patent Application Information Retrieval (PAIR) — application status and file history. uspto.gov/patents/pair
- USPTO Bulk Data Storage System — comprehensive patent text + claims dataset. bulkdata.uspto.gov
- USPTO CPC Classification — Cooperative Patent Classification scheme for technology categorization. uspto.gov/cpc
- SEC EDGAR — public filings cross-reference for assignee corporate entity matching. sec.gov/edgar
- WIPO PATENTSCOPE — international patent context (related international filings). wipo.int/patentscope
