Where does National Cheng Kung University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), National Cheng Kung University ranks #1,060 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 National Cheng Kung University hold?

National Cheng Kung University holds 407 US utility patents granted between 2015 and 2025, spanning 177 technology areas.

What is National Cheng Kung University's Innovation Score?

National Cheng Kung University has an Innovation Score of 58.6 out of 100 (top 4% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is National Cheng Kung University's patent grant rate increasing or decreasing?

National Cheng Kung University's recent grant velocity is -24% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for National Cheng Kung University's patents?

National Cheng Kung University's patents average 11.4 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 National Cheng Kung 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

National Cheng Kung University

Q: What technology areas does National Cheng Kung University focus on?

National Cheng Kung University's top technology area is A61K (Preparations FOR Medical, Dental OR Toiletry Purposes) with 52 patents. Grants appear in 177 CPC subclasses total.

USPTO PatentsView assignee record - 407 granted patents across 177 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: A61K (Preparations FOR Medical, Dental OR Toiletry Purposes).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, National ranks #1,060 of 49,997 tracked US assignees by granted-patent volume, with 407 patents across 177 technology areas.

#1,060
of 49,997 US assignees by volume: Top 4%
by Innovation Score (58.6/100): 11.4
avg claims per patent: -24%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1060 · Foreign Corporation #1,060 · 407 grants

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

GRANTS-MID 407 grants
TOP-DECILE #1,060/49,997
PHOTO-FINISH Brainlab
CPC-WIDE A61K · 177 areas
INNOV-PAR 58.6/100
CLAIMS-PAR 11.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -24% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Brainlab AG (±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.

Qualcomm Incorporated · highest

85
Aalto University… · near

59
Asmpt Singapore PTE · near

59
Avery Dennison… · near

59
KYB · near

59
National Cheng Kung… · this assignee

59
3D Lighting… · lowest

7

What this shows National's Innovation Score is 58.6/100 (top 4% 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.

How National's grant cadence moved

Between 2020–2024, National Cheng Kung University received 165 grants versus 217 in 2015–2019 (-24% equal-window velocity, below median growth). Across complete PatentsView years, output peaked in 2015 at 64 grants and bottomed in 2024 at 24. Lead class A61K accounts for 12.8% of the portfolio across 177 subclasses. Volume neighbours: Assa Abloy AB (#1,056) and Regal Beloit America, Inc. (#1,064).

National's three-year grant acceleration

From 2019–2021 to 2022–2024, National Cheng Kung University moved from 111 to 100 grants (0.90x 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 #1,466. See the growth leaderboard.

Assa Abloy AB

408
Fluke

408
Brainlab

407
Electrolux Applia…

407
THE University OF…

407
National Cheng Ku… ◀

407
AMS

406
Interdigital Tech…

406
Regal Beloit Amer…

406

What this shows National holds 407 patents at rank #1,060, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near National

By rank, the assignees closest to #1,060 in granted patent volume.

Leaders in A61K (Preparations FOR Medical)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for National, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (59 here).

KYB Corporation 59 Avery Dennison Retail Information Services LLC 59 Aalto University Foundation sr 59 Asmpt Singapore PTE. Ltd. 59

Similar claim depth

Nearest assignees by average claims per patent (11.4 here).

Arkray, Inc. 11.4 avg Endress+Hauser Process Solutions AG 11.4 avg Tokyo Visionary Optics Co., Ltd. 11.4 avg Silgan Dispensing Systems Corporation 11.4 avg

National's Innovation Score vs. every tracked assignee

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

59 Top 4% higher than 96% 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

National Cheng Kung University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	64	15.7%
2016	38	9.3%
2017	38	9.3%
2018	31	7.6%
2019	46	11.3%
2020	29	7.1%
2021	36	8.8%
2022	37	9.1%
2023	39	9.6%
2024	24	5.9%
2025partial year	25	6.1%

Which technologies does National Cheng Kung University patent most?

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 52

A61B - DIAGNOSIS; SURGERY; Identification 44

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 38

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 35

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 32

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 30

G06F - Electric Digital Data Processing 29

C07K - Peptides 24

C12N - Microorganisms OR ENZYMES; Compositions THEREOF; Propagating, Preserving, OR Maintaining MICROORGANISMS; Mutation OR Genetic ENGINEERING; Culture Media 22

B82Y - Specific Uses OR Applications OF NANOSTRUCTURES; Measurement OR Analysis OF NANOSTRUCTURES; Manufacture OR Treatment OF Nanostructures 18

G06T - Image Data Processing OR Generation, IN General 17

A61L - Methods OR Apparatus FOR Sterilising Materials OR Objects IN GENERAL; Disinfection, Sterilisation OR Deodorisation OF AIR; Chemical Aspects OF Bandages, Dressings, Absorbent Pads OR Surgical ARTICLES; Materials FOR Bandages, Dressings, Absorbent Pads OR Surgical Articles 16

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 15

G16H - Healthcare Informatics, i.e. Information AND Communication Technology [ICT] Specially Adapted FOR THE Handling OR Processing OF Medical OR Healthcare Data 15

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 15

Top 15 of 177 technology areas

Where it ranks

Overall rank by patents

#1,060

of 49,997 tracked assignees

Innovation Score

58.6 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

National Cheng Kung University's patent record in context - here's where to go next.

National Cheng Kung University's lead technology class is A61K (Preparations FOR Medical, Dental OR Toiletry Purposes), 12.8% of its portfolio - see every assignee active in that class. Explore A61K
Ranked #1,060 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare National Cheng Kung University against Assa Abloy AB, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 58.6/100 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.