Where does Yamaguchi University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Yamaguchi University ranks #6,095 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 Yamaguchi University hold?

Yamaguchi University holds 56 US utility patents granted between 2015 and 2025, spanning 46 technology areas.

What is Yamaguchi University's Innovation Score?

Yamaguchi University has an Innovation Score of 51.2 out of 100 (top 12% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Yamaguchi University focus on?

Yamaguchi University's top technology area is A61K (Preparations FOR Medical, Dental OR Toiletry Purposes) with 26 patents, ranking #871 of 7,163 assignees active in that subclass. Grants appear in 46 CPC subclasses total.

Is Yamaguchi University's patent grant rate increasing or decreasing?

Yamaguchi University's recent grant velocity is -10% 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 Yamaguchi University's patents?

Yamaguchi University's patents average 12.4 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 Yamaguchi 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

Yamaguchi University

USPTO PatentsView assignee record - 56 granted patents across 46 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, Yamaguchi ranks #6,095 of 49,997 tracked US assignees by granted-patent volume, with 56 patents across 46 technology areas.

#6,095
of 49,997 US assignees by volume: Top 12%
by Innovation Score (51.2/100): 12.4
avg claims per patent: -10%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R6095 · Foreign Corporation #6,095 · 56 grants

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

GRANTS-SMALL 56 grants
UPPER-Q #6,095/49,997
PHOTO-FINISH Viking Group
CPC-WIDE A61K · 46 areas
INNOV-PAR 51.2/100
CLAIMS-RICH 12.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT -10% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Viking Group, Inc. (±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.

How Yamaguchi’s 51.2 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 14.0 pts (27%) Velocity 5.8 pts (11%) Breadth 24.0 pts (47%) Claim depth 7.4 pts (14%)

Qualcomm Incorporated · highest

85
Ascendis Pharma A/S · near

51
Institut National… · near

51
National Health… · near

51
Transocean Sedco… · near

51
Yamaguchi University · this assignee

51
3D Lighting… · lowest

7

What this shows Yamaguchi's Innovation Score is 51.2/100 (top 12% 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.

Does more volume mean deeper claims for Yamaguchi?

Each dot is one of Yamaguchi’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Yamaguchi’s own 12.4 claims/patent is at or below the 13.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Yamaguchi vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Yamaguchi's grants concentrate

Yamaguchi University is a focused PatentsView assignee: 46 CPC subclasses with 46.4% of grants classified under A61K (Preparations FOR Medical, Dental OR Toiletry Purposes). Peak complete grant year is 2016 (9 grants) versus a trough of 2 in 2024. By volume, Yamaguchi sits between Viking Group, Inc. and Zhongshan Innocloud Intellectual Property Services Co., Ltd..

Yamaguchi's three-year grant acceleration

Yamaguchi University shows 14 grants in 2022–2024 against only 16 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Viking Group

56
Vocollect

56
Voestalpine Stahl

56
Wittenstein SE

56
Yamaichi

56
Zhejiang Huahai P…

56
Zenpayroll

56
Zhongshan Innoclo…

56
Yamaguchi Univers… ◀

56

What this shows Yamaguchi holds 56 patents at rank #6,093, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Yamaguchi

By rank, the assignees closest to #6,093 in granted patent volume.

Leaders in A61K (Preparations FOR Medical)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Yamaguchi, neither rank-band nor same-CPC leaders (those blocks stay above). In A61K (Preparations FOR Medical), Yamaguchi ranks #871 of 7,163 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (51 here).

Transocean Sedco Forex Ventures Limited 51 Ascendis Pharma A/S 51 National Health Research Institutes 51 Institut National DE LA Recherche Agronomqiue 51

Similar claim depth

Nearest assignees by average claims per patent (12.4 here).

Tridonic GmbH & Co KG 12.4 avg Vega Grieshaber KG 12.4 avg Korea University Research AND Business Foundation, Sejong Campus 12.4 avg Chipbond Technology Corporation 12.4 avg

Yamaguchi's Innovation Score vs. every tracked assignee

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

51 Top 12% higher than 88% 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

Yamaguchi University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	4	7.1%
2016	9	16.1%
2017	6	10.7%
2018	6	10.7%
2019	4	7.1%
2020	7	12.5%
2021	5	8.9%
2022	6	10.7%
2023	6	10.7%
2024	2	3.6%
2025partial year	1	1.8%

Which technologies does Yamaguchi University patent most?

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 26

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

C12N - Microorganisms OR ENZYMES; Compositions THEREOF; Propagating, Preserving, OR Maintaining MICROORGANISMS; Mutation OR Genetic ENGINEERING; Culture Media 16

C07K - Peptides 10

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 9

C07C - Acyclic OR Carbocyclic Compounds 8

C12Q - Measuring OR Testing Processes Involving Enzymes, Nucleic Acids OR Microorganisms ; Compositions OR Test Papers THEREFOR; Processes OF Preparing Such COMPOSITIONS; Condition-responsive Control IN Microbiological OR Enzymological Processes 7

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 5

B01D - Separation 4

A61Q - Specific USE OF Cosmetics OR Similar Toiletry Preparations 4

A23L - Foods, Foodstuffs OR Non-alcoholic Beverages, NOT Otherwise Provided FOR; Preparation OR Treatment Thereof 4

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 3

Y02A - Technologies FOR Adaptation TO Climate Change 3

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 3

A23V - Indexing Scheme Relating TO Foods, Foodstuffs OR Non-alcoholic Beverages AND Lactic OR Propionic Acid Bacteria Used IN Foodstuffs OR Food Preparation 3

Top 15 of 46 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Yamaguchi University's patent record in context - here's where to go next.

Yamaguchi University's lead technology class is A61K (Preparations FOR Medical, Dental OR Toiletry Purposes), 46.4% of its portfolio - see every assignee active in that class. Explore A61K
Ranked #6,095 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Yamaguchi University against Viking Group, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 51.2/100 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.