Where does National University Corporation Kagawa University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), National University Corporation Kagawa University ranks #3,977 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

What is National University Corporation Kagawa University's Innovation Score?

National University Corporation Kagawa University has an Innovation Score of 53.5 out of 100 (top 9% 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 University Corporation Kagawa University focus on?

National University Corporation Kagawa University's top technology area is A61K (Preparations FOR Medical, Dental OR Toiletry Purposes) with 20 patents. Grants appear in 91 CPC subclasses total.

Is National University Corporation Kagawa University's patent grant rate increasing or decreasing?

National University Corporation Kagawa University's recent grant velocity is -35% 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 University Corporation Kagawa University's patents?

National University Corporation Kagawa 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

National University Corporation Kagawa University

Q: How many patents does National University Corporation Kagawa University hold?

National University Corporation Kagawa University holds 91 US utility patents granted between 2015 and 2025, spanning 91 technology areas.

Q: How is the National University Corporation Kagawa 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 PatentsView assignee record - 91 granted patents across 91 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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The verdict

According to USPTO PatentsView, National ranks #3,977 of 49,997 tracked US assignees by granted-patent volume, with 91 patents across 91 technology areas.

#3,977
of 49,997 US assignees by volume: Top 9%
by Innovation Score (53.5/100): 11.4
avg claims per patent: -35%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R3977 · Foreign Corporation #3,977 · 91 grants

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

GRANTS-SMALL 91 grants
TOP-DECILE #3,977/49,997
PHOTO-FINISH L&F Plastics
CPC-WIDE A61K · 91 areas
INNOV-PAR 53.5/100
CLAIMS-PAR 11.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -35% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: L&F Plastics, Co., Ltd. (±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
Bekaert · near

54
Inari Medical · near

54
National University… · this assignee

54
University of… · near

54
Novamont S p A · near

54
3D Lighting… · lowest

7

What this shows National's Innovation Score is 53.5/100 (top 9% 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 University Corporation Kagawa University received 31 grants versus 48 in 2015–2019 (-35% equal-window velocity, below median growth). Across complete PatentsView years, output peaked in 2016 at 13 grants and bottomed in 2020 at 4. Lead class A61K accounts for 22% of the portfolio across 91 subclasses. Volume neighbours: L&F Plastics, Co., Ltd. (#3,975) and Synventive Molding Solutions, Inc. (#3,983).

National's three-year grant acceleration

From 2019–2021 to 2022–2024, National University Corporation Kagawa University moved from 22 to 20 grants (0.91x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

L&F Plastics

91
Ludwig Institute…

91
NIO Nextev

91
North China Elect…

91
Patent Investment…

91
SOCIÉTÉ BIC

91
Suzhou Opple Ligh…

91
Synventive Moldin…

91
National Universi… ◀

91

What this shows National holds 91 patents at rank #3,979, 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 #3,979 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 (54 here).

NV Bekaert SA 54 Inari Medical, Inc. 54 University of Newcastle Upon Tyne 54 Novamont S.p.A. 54

Similar claim depth

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

Skullcandy, Inc. 11.4 avg Lintec Corporation 11.4 avg Sagem Defense Securite 11.4 avg Coravin, Inc. 11.4 avg

National's Innovation Score vs. every tracked assignee

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

54 Top 9% higher than 91% 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 University Corporation Kagawa University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	10	11.0%
2016	13	14.3%
2017	9	9.9%
2018	5	5.5%
2019	11	12.1%
2020	4	4.4%
2021	7	7.7%
2022	9	9.9%
2023	5	5.5%
2024	6	6.6%
2025partial year	12	13.2%

Which technologies does National University Corporation Kagawa University patent most?

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 20

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 19

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 17

C07K - Peptides 12

G01J - Measurement OF Intensity, Velocity, Spectral Content, Polarisation, Phase OR Pulse Characteristics OF Infrared, Visible OR Ultraviolet LIGHT; COLORIMETRY; Radiation Pyrometry 12

A61Q - Specific USE OF Cosmetics OR Similar Toiletry Preparations 11

C12N - Microorganisms OR ENZYMES; Compositions THEREOF; Propagating, Preserving, OR Maintaining MICROORGANISMS; Mutation OR Genetic ENGINEERING; Culture Media 11

A61B - DIAGNOSIS; SURGERY; Identification 10

C12Y - Enzymes 8

Y02A - Technologies FOR Adaptation TO Climate Change 6

H10N - Electric Solid-state Devices NOT Otherwise Provided FOR 6

H02N - Electric Machines NOT Otherwise Provided FOR 6

A23L - Foods, Foodstuffs OR Non-alcoholic Beverages, NOT Otherwise Provided FOR; Preparation OR Treatment Thereof 5

G01L - Measuring Force, Stress, Torque, Work, Mechanical Power, Mechanical Efficiency, OR Fluid Pressure 5

G01B - Measuring Length, Thickness OR Similar Linear DIMENSIONS; Measuring ANGLES; Measuring AREAS; Measuring Irregularities OF Surfaces OR Contours 5

Top 15 of 91 technology areas

Where it ranks

Overall rank by patents

#3,977

of 49,997 tracked assignees

Innovation Score

53.5 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 University Corporation Kagawa University's patent record in context - here's where to go next.

National University Corporation Kagawa University's lead technology class is A61K (Preparations FOR Medical, Dental OR Toiletry Purposes), 22% of its portfolio - see every assignee active in that class. Explore A61K
Ranked #3,977 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare National University Corporation Kagawa University against L&F Plastics, Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 53.5/100 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.