PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

NATIONAL CENTRAL UNIVERSITY

USPTO PatentsView assignee record — 190 granted patents across 128 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: A61B (DIAGNOSIS; SURGERY; IDENTIFICATION).

Explore the portfolio See the ranking
190
Total patents granted
128
CPC technology areas
11.8
Avg claims per patent
-22%
5-year filing velocity

The verdict

NATIONAL holds 190 US patents across 128 technology areas — rank #2,080 of 50,000 tracked assignees.

#2,080
of 50,000 US assignees by volume
Top 5%
by Innovation Score (57.3/100)
11.8
avg claims per patent
-22%
filing velocity, last 5 yrs

Portfolio overview

NATIONAL CENTRAL UNIVERSITY has been granted 190 US utility patents between 2015 and 2025, placing NATIONAL CENTRAL UNIVERSITY at rank #2,080 across all assignees tracked by PlainPatent. This portfolio spans 128 distinct Cooperative Patent Classification (CPC) subclasses, averaging 11.8 claims per patent with primary concentration in A61B (DIAGNOSIS; SURGERY; IDENTIFICATION). As a Foreign Corporation, NATIONAL CENTRAL UNIVERSITY is one of the broader-portfolio assignees in the PatentsView dataset. The composite Innovation Score of 57.3/100 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 83 grants, compared with 107 in the 2015–2019 window — a -22% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. 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. NATIONAL CENTRAL UNIVERSITY's 11.8 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 NATIONAL CENTRAL UNIVERSITY against peers pursuing similar technology classes.

How does NATIONAL compare?

Granted US patents 2015–2025 versus the largest corporate holders — this company marked ◀

patents

What this shows NATIONAL holds 190 patents — placing it at rank #2,080 overall, well behind the volume leaders but ahead of the tens of thousands of smaller assignees in the dataset.

Source USPTO PatentsView — granted utility patents As of 2015–2025

NATIONAL's Innovation Score vs. every tracked assignee

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

57 Top 5% higher than 95% of 50,000 US assignees

0–10: 687 US assignees (1%). Below this entry. 10–20: 2,527 US assignees (5%). Below this entry. 20–30: 13,162 US assignees (26%). Below this entry. 30–40: 15,294 US assignees (31%). Below this entry. 40–50: 11,491 US assignees (23%). Below this entry. 50–60: 5,058 US assignees (10%). This entry sits in this band. 60–70: 1,537 US assignees (3%). Above this entry. 70–80: 234 US assignees (0%). Above this entry. 80–90: 10 US assignees (0%). Above this entry. 90–100: 0 US assignees (0%). Above this entry. This assignee 0 100 every tracked assignee, bucketed by value

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

010203040 20152016201720182019202020212022202320242025 6
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
NATIONAL CENTRAL UNIVERSITY patent grants by year, 2015–2025
Year Patents Granted Share of Period
2015 29 15.3%
2016 21 11.1%
2017 25 13.2%
2018 16 8.4%
2019 16 8.4%
2020 8 4.2%
2021 21 11.1%
2022 20 10.5%
2023 12 6.3%
2024 16 8.4%
2025 6 3.2%

Which technologies does NATIONAL CENTRAL UNIVERSITY patent most?

Top 15 of 128 technology areas

Patent Moat Analysis

Portfolio Volume Moderate
Tech Breadth Diversified
Claim Depth Simple
Velocity Declining

Where it ranks

Overall rank by patents

#2,080

Across all tracked assignees

Innovation Score

57.3 out of 100

View all rankings →

Data Source

USPTO PatentsView — US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does NATIONAL CENTRAL UNIVERSITY hold?
NATIONAL CENTRAL UNIVERSITY holds 190 US granted patents filed between 2015 and 2025, spanning 128 technology areas.
What is NATIONAL CENTRAL UNIVERSITY's Innovation Score?
NATIONAL CENTRAL UNIVERSITY has an Innovation Score of 57.3 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does NATIONAL CENTRAL UNIVERSITY focus on?
NATIONAL CENTRAL UNIVERSITY's top technology area is A61B (DIAGNOSIS; SURGERY; IDENTIFICATION) with 24 patents. The company has filed patents in 128 CPC subclasses total.
Is NATIONAL CENTRAL UNIVERSITY's patent filing rate increasing or decreasing?
NATIONAL CENTRAL UNIVERSITY's recent filing velocity is -22% compared to the prior five-year period. Filing activity has slowed relative to earlier years.
What does claim depth mean for NATIONAL CENTRAL UNIVERSITY's patents?
NATIONAL CENTRAL UNIVERSITY's patents average 11.8 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the NATIONAL CENTRAL 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 Innovation Score Works

Understand the four dimensions behind the composite score
How to Read Patent Data

Plain-English guide to CPC codes, claims, and metrics
Patent Moat Analysis

How companies use patents as competitive barriers

Explore the patent dataset

A61B technology

NATIONAL CENTRAL UNIVERSITY's primary CPC class — all holders and yearly trends
Top 50 patent holders

See where NATIONAL CENTRAL 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

All companies → | All technologies → | Rankings →
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