Overall rank by patents
#4,186
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView Foreign Corporation
Changzhou University
USPTO PatentsView assignee record — 85 granted patents across 84 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B01J (CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS).
85
Total patents granted
84
CPC technology areas
8.7
Avg claims per patent
+744%
5-year filing velocity
The verdict
Changzhou holds 85 US patents across 84 technology areas — rank #4,186 of 50,000 tracked assignees.
- #4,186
- of 50,000 US assignees by volume
- Top 1%
- by Innovation Score (65.6/100)
- 8.7
- avg claims per patent
- +744%
- filing velocity, last 5 yrs
Portfolio overview
CHANGZHOU UNIVERSITY has been granted 85 US utility patents between 2015 and 2025, placing CHANGZHOU UNIVERSITY at rank #4,186 across all assignees tracked by PlainPatent. This portfolio spans 84 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.7 claims per patent with primary concentration in B01J (CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS). As a Foreign Corporation, CHANGZHOU UNIVERSITY is one of the broader-portfolio assignees in the PatentsView dataset. The composite Innovation Score of 65.6/100 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 76 grants, compared with 9 in the 2015–2019 window — a +744% 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. CHANGZHOU UNIVERSITY's 8.7 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 84 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark CHANGZHOU UNIVERSITY against peers pursuing similar technology classes.
How does CHANGZHOU 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
- Changzhou Univers… ◀ 85
CHANGZHOU UNIVERSITY
85 patents
What this shows CHANGZHOU holds 85 patents — placing it at rank #4,186 overall, well behind the volume leaders but ahead of the tens of thousands of smaller assignees in the dataset.
CHANGZHOU's Innovation Score vs. every tracked assignee
Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)
66 Top 1% higher than 99% of 50,000 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
| Year | Patents Granted | Share of Period |
|---|---|---|
| 2015 | 2 | 2.4% |
| 2016 | 2 | 2.4% |
| 2017 | 3 | 3.5% |
| 2019 | 2 | 2.4% |
| 2020 | 3 | 3.5% |
| 2021 | 2 | 2.4% |
| 2022 | 15 | 17.6% |
| 2023 | 16 | 18.8% |
| 2024 | 25 | 29.4% |
| 2025 | 15 | 17.6% |
Which technologies does CHANGZHOU UNIVERSITY patent most?
Top 15 of 84 technology areas
Patent Moat Analysis
Portfolio Volume Light
Tech Breadth Multi-domain
Claim Depth Simple
Velocity Accelerating
Frequently Asked Questions
How many patents does CHANGZHOU UNIVERSITY hold?
CHANGZHOU UNIVERSITY holds 85 US granted patents filed between 2015 and 2025, spanning 84 technology areas.
What is CHANGZHOU UNIVERSITY's Innovation Score?
CHANGZHOU UNIVERSITY has an Innovation Score of 65.6 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does CHANGZHOU UNIVERSITY focus on?
CHANGZHOU UNIVERSITY's top technology area is B01J (CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS) with 13 patents. The company has filed patents in 84 CPC subclasses total.
Is CHANGZHOU UNIVERSITY's patent filing rate increasing or decreasing?
CHANGZHOU UNIVERSITY's recent filing velocity is +744% compared to the prior five-year period. This indicates accelerating innovation.
What does claim depth mean for CHANGZHOU UNIVERSITY's patents?
CHANGZHOU UNIVERSITY's patents average 8.7 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the CHANGZHOU 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
How to use this portfolio
Changzhou's 85 grants land it in the top 1% by Innovation Score — but volume alone doesn't tell you where the strength sits.
- Read that count against the largest US assignees before treating it as dominance — Changzhou ranks #4,186 of 50,000. Top 50 holders
- Most of this portfolio concentrates in B01J — see who else leads that technology area. B01J leaders
- Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works
Patent counts and the Innovation Score measure patenting activity — not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.
Explore the patent dataset
B01J technology
CHANGZHOU UNIVERSITY's primary CPC class — all holders and yearly trends
Top 50 patent holders
See where CHANGZHOU 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.
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
