Where does E.M.W. Energy Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), E.M.W. Energy Co., Ltd. ranks #26,225 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 E.M.W. Energy Co., Ltd. hold?

E.M.W. Energy Co., Ltd. holds 10 US utility patents granted between 2016 and 2022, spanning 4 technology areas.

What is E.M.W. Energy Co., Ltd.'s Innovation Score?

E.M.W. Energy Co., Ltd. has an Innovation Score of 21.1 out of 100 (8th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does E.M.W. Energy Co., Ltd. focus on?

E.M.W. Energy Co., Ltd.'s top technology area is H01M (Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy) with 10 patents, ranking #525 of 2,332 assignees active in that subclass. Grants appear in 4 CPC subclasses total.

Is E.M.W. Energy Co., Ltd.'s patent grant rate increasing or decreasing?

E.M.W. Energy Co., Ltd.'s recent grant velocity is +133% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for E.M.W. Energy Co., Ltd.'s patents?

E.M.W. Energy Co., Ltd.'s patents average 7.9 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 E.M.W. Energy Co., 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

E.M.W. Energy Co., Ltd.

USPTO PatentsView assignee record - 10 granted patents across 4 technology areas, recorded in grant years 2016–2022. 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

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, E.m.w. ranks #26,225 of 49,997 tracked US assignees by granted-patent volume, with 10 patents across 4 technology areas.

#26,225
of 49,997 US assignees by volume: 8th percentile
by Innovation Score (21.1/100): 7.9
avg claims per patent: +133%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R26225 · Foreign Corporation #26,225 · 10 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 10 grants
MID-PACK #26,225/49,997
PHOTO-FINISH Duckyang Ind
CPC-NARROW H01M · 4 areas
INNOV-THIN 21.1/100
CLAIMS-SPARSE 7.9 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +133% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Duckyang Ind. 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.

How E.m.w.’s 21.1 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 8.3 pts (39%) Velocity 1.0 pts (5%) Breadth 7.1 pts (34%) Claim depth 4.7 pts (22%)

Qualcomm Incorporated · highest

85
E M W Energy · this assignee

21
3D Lighting… · lowest

7

What this shows E.m.w.'s Innovation Score is 21.1/100 (8th percentile 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 E.m.w.?

Each dot is one of E.m.w.’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). E.m.w.’s own 7.9 claims/patent is at or below the 11.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where E.m.w.'s grants concentrate

E.M.W. Energy Co., Ltd. is a focused PatentsView assignee: 4 CPC subclasses with 100% 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 2020 (4 grants) versus a trough of 1 in 2016. By volume, E.m.w. sits between Duckyang Ind. Co., Ltd. and Ecole Nationale Superieure DE Chimie DE Paris.

E.m.w.'s three-year grant acceleration

E.M.W. Energy Co., Ltd. shows 1 grants in 2022–2024 against only 7 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.

Duckyang Ind

10
Dyno Seasonal Sol…

10
E-ray Optoelectro…

10
E-xteq Europe

10
Eagle Harbor Hold…

10
Easy Sanitary Sol…

10
Eaton Industrial

10
Ecole Nationale S…

10
E M W Energy ◀

10

What this shows E.M.W. holds 10 patents at rank #26,173, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near EMW

By rank, the assignees closest to #26,173 in granted patent volume.

Leaders in H01M (Processes OR Means)

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

E.m.w.'s Innovation Score vs. every tracked assignee

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

21 8th percentile higher than 8% 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 · 2016–2022

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

E.M.W. Energy Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	10.0%
2017	1	10.0%
2019	1	10.0%
2020	4	40.0%
2021	2	20.0%
2022	1	10.0%

Which technologies does E.M.W. Energy Co., Ltd. patent most?

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 10

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 10

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

Top 4 of 4 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

E.M.W. Energy Co., Ltd.'s patent record in context - here's where to go next.

E.M.W. Energy Co., Ltd.'s lead technology class is H01M (Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy), 100% of its portfolio - see every assignee active in that class. Explore H01M
Ranked #26,225 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare E.M.W. Energy Co., Ltd. against Duckyang Ind. Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 21.1/100 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.