Where does National Chi Nan University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), National Chi Nan University ranks #5,386 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 Chi Nan University hold?

National Chi Nan University holds 64 US utility patents granted between 2015 and 2025, spanning 47 technology areas.

What is National Chi Nan University's Innovation Score?

National Chi Nan University has an Innovation Score of 46.0 out of 100 (top 22% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does National Chi Nan University focus on?

National Chi Nan University's top technology area is H03F (Amplifiers) with 14 patents. Grants appear in 47 CPC subclasses total.

Is National Chi Nan University's patent grant rate increasing or decreasing?

National Chi Nan University's recent grant velocity is -62% 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 Chi Nan University's patents?

National Chi Nan University's patents average 10.1 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 Chi Nan 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 Chi Nan University

USPTO PatentsView assignee record - 64 granted patents across 47 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: H03F (Amplifiers).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, National ranks #5,386 of 49,997 tracked US assignees by granted-patent volume, with 64 patents across 47 technology areas.

#5,386
of 49,997 US assignees by volume: Top 22%
by Innovation Score (46.0/100): 10.1
avg claims per patent: -62%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R5386 · Foreign Corporation #5,386 · 64 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 64 grants
UPPER-Q #5,386/49,997
PHOTO-FINISH Meritor Heavy…
CPC-WIDE H03F · 47 areas
INNOV-PAR 46.0/100
CLAIMS-PAR 10.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -62% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Meritor Heavy Vehicle Braking Systems (UK) Limited (±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
Clean Energy Labs · near

46
Inter-University… · near

46
National Chi Nan… · this assignee

46
CTB · near

46
Hisense Broadband… · near

46
3D Lighting… · lowest

7

What this shows National's Innovation Score is 46.0/100 (top 22% 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.

Where National's grants concentrate

National Chi Nan University is a focused PatentsView assignee: 47 CPC subclasses with 21.9% of grants classified under H03F (Amplifiers). Peak complete grant year is 2019 (19 grants) versus a trough of 3 in 2021. By volume, National sits between Meritor Heavy Vehicle Braking Systems (UK) Limited and Ojjo, Inc..

National's three-year grant acceleration

From 2019–2021 to 2022–2024, National Chi Nan University moved from 30 to 6 grants (0.20x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Meritor Heavy Veh…

64
Mid-west Metal Pr…

64
Nisshinbo Holdings

64
Narrative Science

64
National Products

64
National Universi…

64
Nokian Tyres

64
Ojjo

64
National Chi Nan… ◀

64

What this shows National holds 64 patents at rank #5,386, 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 #5,386 in granted patent volume.

Leaders in H03F (Amplifiers)

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 (46 here).

Clean Energy Labs, LLC 46 Inter-University Research Institute Corporation Research Organization of Information and Systems 46 Hisense Broadband Multimedia Technologies Co., Ltd. 46 CTB, Inc. 46

Similar claim depth

Nearest assignees by average claims per patent (10.1 here).

Mayekawa MFG. Co., Ltd. 10.1 avg Mizuno Corporation 10.1 avg State Grid Corporation of China 10.1 avg Sumitomo Chemical Company, Limited 10.1 avg

National's Innovation Score vs. every tracked assignee

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

46 Top 22% higher than 78% 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 Chi Nan University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	9	14.1%
2016	5	7.8%
2017	6	9.4%
2018	6	9.4%
2019	19	29.7%
2020	8	12.5%
2021	3	4.7%
2022	3	4.7%
2023	3	4.7%
2025partial year	2	3.1%

Which technologies does National Chi Nan University patent most?

H03F - Amplifiers 14

H03D - Demodulation OR Transference OF Modulation From ONE Carrier TO Another 11

H01P - WAVEGUIDES; Resonators, Lines, OR Other Devices OF THE Waveguide Type 10

H03B - Generation OF Oscillations, Directly OR BY Frequency-changing, BY Circuits Employing Active Elements Which Operate IN A Non-switching MANNER; Generation OF Noise BY Such Circuits 10

H04B - Transmission 6

H03H - Impedance Networks, e.g. Resonant CIRCUITS; Resonators 5

H03K - Pulse Technique 4

C07D - Heterocyclic Compounds 4

H02M - Apparatus FOR Conversion Between AC AND AC, Between AC AND DC, OR Between DC AND DC, AND FOR USE With Mains OR Similar Power Supply SYSTEMS; Conversion OF DC OR AC Input Power Into Surge Output POWER; Control OR Regulation Thereof 4

H04N - Pictorial Communication, e.g. Television 3

G01J - Measurement OF Intensity, Velocity, Spectral Content, Polarisation, Phase OR Pulse Characteristics OF Infrared, Visible OR Ultraviolet LIGHT; COLORIMETRY; Radiation Pyrometry 3

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 3

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 3

C09B - Organic Dyes OR Closely-related Compounds FOR Producing Dyes ; , e.g. PIGMENTS; MORDANTS; Lakes 3

H03L - Automatic Control, Starting, Synchronisation OR Stabilisation OF Generators OF Electronic Oscillations OR Pulses 3

Top 15 of 47 technology areas

Where it ranks

Overall rank by patents

#5,386

of 49,997 tracked assignees

Innovation Score

46.0 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 Chi Nan University's patent record in context - here's where to go next.

National Chi Nan University's lead technology class is H03F (Amplifiers), 21.9% of its portfolio - see every assignee active in that class. Explore H03F
Ranked #5,386 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare National Chi Nan University against Meritor Heavy Vehicle Braking Systems (UK) Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 46.0/100 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.