Where does Fuzhou Esun Electronic Co., Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Fuzhou Esun Electronic Co., Ltd ranks #8,205 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 Fuzhou Esun Electronic Co., Ltd hold?

Fuzhou Esun Electronic Co., Ltd holds 39 US utility patents granted between 2019 and 2025, spanning 0 technology areas.

What is Fuzhou Esun Electronic Co., Ltd's Innovation Score?

Fuzhou Esun Electronic Co., Ltd has an Innovation Score of 15.5 out of 100 (3rd 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 Fuzhou Esun Electronic Co., Ltd focus on?

Fuzhou Esun Electronic Co., Ltd holds grants across 0 technology areas classified under the Cooperative Patent Classification system.

Is Fuzhou Esun Electronic Co., Ltd's patent grant rate increasing or decreasing?

Fuzhou Esun Electronic Co., Ltd's recent grant velocity is +725% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Fuzhou Esun Electronic Co., Ltd's patents?

Fuzhou Esun Electronic Co., Ltd's patents average 1.0 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 Fuzhou Esun Electronic 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

Fuzhou Esun Electronic Co., Ltd

USPTO PatentsView assignee record - 39 granted patents across 0 technology areas, recorded in grant years 2019–2025. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength.

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Fuzhou ranks #8,205 of 49,997 tracked US assignees by granted-patent volume, with 39 patents across 0 technology areas.

#8,205
of 49,997 US assignees by volume: 3rd percentile
by Innovation Score (15.5/100): 1.0
avg claims per patent: +725%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8205 · Foreign Corporation #8,205 · 39 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-UNK · INNOV-LOW · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-SURGE · BOOK-RICH

GRANTS-SMALL 39 grants
UPPER-Q #8,205/49,997
PHOTO-FINISH Elfa International AB
CPC-UNK CPC blank
INNOV-LOW 15.5/100
CLAIMS-SPARSE 1.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +725% vel
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Elfa International AB (±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 Fuzhou’s 15.5 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 12.7 pts (82%) Velocity 2.1 pts (14%) Breadth 0.0 pts (0%) Claim depth 0.6 pts (4%)

Qualcomm Incorporated · highest

85
David Austin Roses · near

16
Curver Luxembourg Sarl · near

16
Fuzhou Esun · this assignee

15
TEFAL · near

15
Chicagoland Grows · near

15
3D Lighting… · lowest

7

What this shows Fuzhou's Innovation Score is 15.5/100 (3rd 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 Fuzhou?

Each dot is one of Fuzhou’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). Fuzhou’s own 1.0 claims/patent is at or below the 13.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Fuzhou's grants concentrate

Fuzhou Esun Electronic Co., Ltd is a focused PatentsView assignee: 0 CPC subclasses . Peak complete grant year is 2021 (16 grants) versus a trough of 2 in 2023. By volume, Fuzhou sits between Elfa International AB and Francotyp-Postalia GmbH.

Fuzhou's three-year grant acceleration

From 2019–2021 to 2022–2024, Fuzhou Esun Electronic Co., Ltd moved from 28 to 9 grants (0.32x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Elfa Internationa…

39
Ensyn Renewables

39
F I S Fabbrica It…

39
FCI

39
Faiveley Transpor…

39
Flexera Software

39
Fractus

39
Francotyp-postalia

39
Fuzhou Esun ◀

39

What this shows Fuzhou holds 39 patents at rank #8,200, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Fuzhou

By rank, the assignees closest to #8,200 in granted patent volume.

Assignees with similar portfolio profiles

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

Similar innovation score

Nearest assignees by Innovation Score (15 here).

TEFAL 15 Chicagoland Grows, Inc. 15 Curver Luxembourg Sarl 16 David Austin Roses Limited 16

Fuzhou's Innovation Score vs. every tracked assignee

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

15 3rd percentile higher than 3% 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 · 2019–2025

Grants by year

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

View data table

Fuzhou Esun Electronic Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	4	10.3%
2020	8	20.5%
2021	16	41.0%
2022	4	10.3%
2023	2	5.1%
2024	3	7.7%
2025partial year	2	5.1%

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

Fuzhou Esun Electronic Co., Ltd's patent record in context - here's where to go next.

Ranked #8,205 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Fuzhou Esun Electronic Co., Ltd against Elfa International AB, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 15.5/100 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.