Where does NEC Energy Devices, Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), NEC Energy Devices, Ltd. ranks #4,526 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 NEC Energy Devices, Ltd. hold?

NEC Energy Devices, Ltd. holds 78 US utility patents granted between 2015 and 2019, spanning 21 technology areas.

What is NEC Energy Devices, Ltd.'s Innovation Score?

NEC Energy Devices, Ltd. has an Innovation Score of 37.3 out of 100 (top 44% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is NEC Energy Devices, Ltd.'s patent grant rate increasing or decreasing?

NEC Energy Devices, Ltd.'s recent grant velocity is -100% 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 NEC Energy Devices, Ltd.'s patents?

NEC Energy Devices, Ltd.'s patents average 10.0 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 NEC Energy Devices, Ltd. 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

NEC Energy Devices, Ltd.

Q: What technology areas does NEC Energy Devices, Ltd. focus on?

NEC Energy Devices, Ltd.'s top technology area is H01M (Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy) with 75 patents. Grants appear in 21 CPC subclasses total.

USPTO PatentsView assignee record - 78 granted patents across 21 technology areas, recorded in grant years 2015–2019. 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: H01M (Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, NEC ranks #4,526 of 49,997 tracked US assignees by granted-patent volume, with 78 patents across 21 technology areas.

#4,526
of 49,997 US assignees by volume: Top 44%
by Innovation Score (37.3/100): 10.0
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R4526 · Foreign Corporation #4,526 · 78 grants

GRANTS-SMALL · TOP-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 78 grants
TOP-DECILE #4,526/49,997
PHOTO-FINISH Keygene
CPC-FOCUS H01M · 21 areas
INNOV-THIN 37.3/100
CLAIMS-PAR 10.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Keygene N.V. (±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
Airspan Networks · near

37
Asana BioSciences · near

37
Kuroda Precision… · near

37
NEC Energy Devices · this assignee

37
Pfenex · near

37
3D Lighting… · lowest

7

What this shows NEC's Innovation Score is 37.3/100 (top 44% 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 NEC's grants concentrate

NEC Energy Devices, Ltd. is a focused PatentsView assignee: 21 CPC subclasses with 96.2% of grants classified under H01M (Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy). Peak complete grant year is 2016 (20 grants) versus a trough of 11 in 2015. By volume, NEC sits between Keygene N.V. and Phoseon Technology, Inc..

Keygene

78
Leonhard Kurz Sti…

78
Marmon Foodservice

78
Maytronics

78
Omix-ada

78
Osaka Gas

78
Peltbeam

78
Phoseon Technology

78
NEC Energy Devices ◀

78

What this shows NEC holds 78 patents at rank #4,526, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near NEC

By rank, the assignees closest to #4,526 in granted patent volume.

Leaders in H01M (Processes OR Means)

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

Assignees with similar portfolio profiles

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

Similar innovation score

Nearest assignees by Innovation Score (37 here).

Asana BioSciences, LLC 37 Kuroda Precision Industries Ltd. 37 Airspan Networks Inc. 37 Pfenex Inc. 37

Similar claim depth

Nearest assignees by average claims per patent (10.0 here).

Jenoptik Optical Systems GmbH 10.0 avg Kyowa Hakko BIO Co., Ltd. 10.0 avg Seoyon E-hwa Co., Ltd. 10.0 avg Bridgestone Sports Co., Ltd. 10.0 avg

NEC's Innovation Score vs. every tracked assignee

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

37 Top 44% higher than 56% 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 · 2015–2019

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

NEC Energy Devices, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	11	14.1%
2016	20	25.6%
2017	20	25.6%
2018	14	17.9%
2019	13	16.7%

Which technologies does NEC Energy Devices, Ltd. patent most?

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 75

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 75

Y02T - Climate Change Mitigation Technologies Related TO Transportation 33

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 31

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 24

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 10

Y10T - Technical Subjects Covered BY Former US Classification 8

B60L - Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic Suspension OR Levitation FOR VEHICLES; Monitoring Operating Variables OF Electrically-propelled Vehicl 7

G06F - Electric Digital Data Processing 4

H01G - CAPACITORS; Capacitors, Rectifiers, Detectors, Switching Devices, Light-sensitive OR Temperature-sensitive Devices OF THE Electrolytic Type 3

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 1

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 1

Y02D - Climate Change Mitigation Technologies IN Information AND Communication Technologies [ICT], I.E. Information AND Communication Technologies Aiming AT THE Reduction OF Their OWN Energy USE 1

H04M - Telephonic Communication 1

H01B - CABLES; CONDUCTORS; INSULATORS; Selection OF Materials FOR Their Conductive, Insulating OR Dielectric Properties 1

Top 15 of 21 technology areas

Where it ranks

Overall rank by patents

#4,526

of 49,997 tracked assignees

Innovation Score

37.3 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

NEC Energy Devices, Ltd.'s patent record in context - here's where to go next.

NEC Energy Devices, Ltd.'s lead technology class is H01M (Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy), 96.2% of its portfolio - see every assignee active in that class. Explore H01M
Ranked #4,526 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare NEC Energy Devices, Ltd. against Keygene N.V., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 37.3/100 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.