Where does Nagaoka University of Technology rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Nagaoka University of Technology ranks #14,795 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 Nagaoka University of Technology hold?

Nagaoka University of Technology holds 20 US utility patents granted between 2015 and 2025, spanning 29 technology areas.

What is Nagaoka University of Technology's Innovation Score?

Nagaoka University of Technology has an Innovation Score of 40.9 out of 100 (top 34% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Nagaoka University of Technology's patent grant rate increasing or decreasing?

Nagaoka University of Technology's recent grant velocity is -64% 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 Nagaoka University of Technology's patents?

Nagaoka University of Technology's patents average 10.6 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 Nagaoka University of Technology 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

Nagaoka University of Technology

Q: What technology areas does Nagaoka University of Technology focus on?

Nagaoka University of Technology's top technology area is 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) with 10 patents, ranking #305 of 1,541 assignees active in that subclass. Grants appear in 29 CPC subclasses total.

USPTO PatentsView assignee record - 20 granted patents across 29 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: 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;).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Nagaoka ranks #14,795 of 49,997 tracked US assignees by granted-patent volume, with 20 patents across 29 technology areas.

#14,795
of 49,997 US assignees by volume: Top 34%
by Innovation Score (40.9/100): 10.6
avg claims per patent: -64%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R14795 · Foreign Corporation #14,795 · 20 grants

GRANTS-SMALL · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 20 grants
MID-PACK #14,795/49,997
PHOTO-FINISH Najing Technology
CPC-FOCUS H02M · 29 areas
INNOV-PAR 40.9/100
CLAIMS-PAR 10.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -64% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Najing Technology Corporation 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.

How Nagaoka’s 40.9 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 10.5 pts (26%) Velocity 5.0 pts (12%) Breadth 19.0 pts (47%) Claim depth 6.3 pts (15%)

Qualcomm Incorporated · highest

85
Nagaoka University… · this assignee

41
3D Lighting… · lowest

7

What this shows Nagaoka's Innovation Score is 40.9/100 (top 34% 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 Nagaoka?

Each dot is one of Nagaoka’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). Nagaoka’s own 10.6 claims/patent is at or below the 15.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Nagaoka's grants concentrate

Nagaoka University of Technology is a focused PatentsView assignee: 29 CPC subclasses with 50% of grants classified under 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;). Peak complete grant year is 2017 (4 grants) versus a trough of 1 in 2023. By volume, Nagaoka sits between Naver Webtoon Ltd. and National Institute of Standards and Technology.

Nagaoka's three-year grant acceleration

Nagaoka University of Technology shows 3 grants in 2022–2024 against only 4 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.

Naver Webtoon

20
Netvue

20
NIO (Anhui) Holdi…

20
NTT Research

20
Najing Technology

20
National Institut…

20
National Institut…

20
National Institut…

20
Nagaoka Universit… ◀

20

What this shows Nagaoka holds 20 patents at rank #14,798, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Nagaoka

By rank, the assignees closest to #14,798 in granted patent volume.

Leaders in H02M (Apparatus FOR Conversion Between AC AND AC)

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

Nagaoka's Innovation Score vs. every tracked assignee

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

41 Top 34% higher than 66% 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

Nagaoka University of Technology patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	15.0%
2016	2	10.0%
2017	4	20.0%
2018	3	15.0%
2019	2	10.0%
2020	2	10.0%
2023	1	5.0%
2024	2	10.0%
2025partial year	1	5.0%

Which technologies does Nagaoka University of Technology patent most?

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 10

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 5

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 5

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 3

G03H - Holographic Processes OR Apparatus 3

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 2

C10M - Lubricating Compositions ; USE OF Chemical Substances Either Alone OR AS Lubricating Ingredients IN A Lubricating Composition 1

B23H - Working OF Metal BY THE Action OF A High Concentration OF Electric Current ON A Workpiece Using AN Electrode Which Takes THE Place OF A TOOL; Such Working Combined With Other Forms OF Working OF Metal 1

C10N - Indexing Scheme Associated With Subclass C10m Relating TO Lubricating Compositions 1

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 1

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 1

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 1

C30B - Single-crystal Growth ; Unidirectional Solidification OF Eutectic Material OR Unidirectional Demixing OF Eutectoid MATERIAL; Refining BY Zone-melting OF Material ; Production OF A Homogeneous Polycrystalline Material With Defined Structure ; Single Crystals OR Homogeneous Polycrystalline Material WI 1

C25D - Processes FOR THE Electrolytic OR Electrophoretic Production OF COATINGS; ELECTROFORMING; Apparatus Therefor 1

G02B - Optical Elements, Systems OR Apparatus 1

Top 15 of 29 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

Nagaoka University of Technology's patent record in context - here's where to go next.

Nagaoka University of Technology's lead technology class is 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;), 50% of its portfolio - see every assignee active in that class. Explore H02M
Ranked #14,795 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Nagaoka University of Technology against Naver Webtoon Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 40.9/100 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.