PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Fuzhou ESUN Electronic Co., Ltd

USPTO PatentsView assignee record — 39 granted patents across 0 technology areas, active 2019–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search.

Explore the portfolio See the ranking
39
Total patents granted
0
CPC technology areas
1.0
Avg claims per patent
+775%
5-year filing velocity

The verdict

Fuzhou holds 39 US patents across 0 technology areas — rank #8,200 of 50,000 tracked assignees.

#8,200
of 50,000 US assignees by volume
Top 97%
by Innovation Score (15.5/100)
1.0
avg claims per patent
+775%
filing velocity, last 5 yrs

Portfolio overview

FUZHOU ESUN ELECTRONIC CO., LTD has been granted 39 US utility patents between 2019 and 2025, placing FUZHOU ESUN ELECTRONIC CO., LTD at rank #8,200 across all assignees tracked by PlainPatent. This portfolio spans 0 distinct Cooperative Patent Classification (CPC) subclasses, averaging 1.0 claims per patent. As a Foreign Corporation, FUZHOU ESUN ELECTRONIC CO., LTD is one of the more focused assignees in the PatentsView dataset. The composite Innovation Score of 15.5/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 35 grants, compared with 4 in the 2015–2019 window — a +775% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. FUZHOU ESUN ELECTRONIC CO., LTD's 1.0 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while specialization in 0 subclasses reflects a tightly scoped invention area. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark FUZHOU ESUN ELECTRONIC CO., LTD against peers pursuing similar technology classes.

How does FUZHOU compare?

Granted US patents 2015–2025 versus the largest corporate holders — this company marked ◀

patents

What this shows FUZHOU holds 39 patents — placing it at rank #8,200 overall, well behind the volume leaders but ahead of the tens of thousands of smaller assignees in the dataset.

Source USPTO PatentsView — granted utility patents As of 2015–2025

FUZHOU's Innovation Score vs. every tracked assignee

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

15 Top 97% higher than 3% of 50,000 US assignees

0–10: 687 US assignees (1%). Below this entry. 10–20: 2,527 US assignees (5%). This entry sits in this band. 20–30: 13,162 US assignees (26%). Above this entry. 30–40: 15,294 US assignees (31%). Above this entry. 40–50: 11,491 US assignees (23%). Above this entry. 50–60: 5,058 US assignees (10%). Above this entry. 60–70: 1,537 US assignees (3%). Above this entry. 70–80: 234 US assignees (0%). Above this entry. 80–90: 10 US assignees (0%). Above this entry. 90–100: 0 US assignees (0%). Above this entry. This assignee 0 100 every tracked assignee, bucketed by value

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

05101520 2019202020212022202320242025 2
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%
2025 2 5.1%

Patent Moat Analysis

Portfolio Volume Light
Tech Breadth Specialized
Claim Depth Simple
Velocity Accelerating

Where it ranks

Overall rank by patents

#8,200

Across all tracked assignees

Innovation Score

15.5 out of 100

View all rankings →

Data Source

USPTO PatentsView — US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does FUZHOU ESUN ELECTRONIC CO., LTD hold?
FUZHOU ESUN ELECTRONIC CO., LTD holds 39 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing 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 has filed patents across 0 technology areas classified under the Cooperative Patent Classification system.
Is FUZHOU ESUN ELECTRONIC CO., LTD's patent filing rate increasing or decreasing?
FUZHOU ESUN ELECTRONIC CO., LTD's recent filing velocity is +775% compared to the prior five-year period. This indicates accelerating innovation.
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 relatively simple claim structure, typical for focused inventions.
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.

Learn More

How Innovation Score Works

Understand the four dimensions behind the composite score
How to Read Patent Data

Plain-English guide to CPC codes, claims, and metrics
Patent Moat Analysis

How companies use patents as competitive barriers

How to use this portfolio

Fuzhou's 39 grants land it in the top 97% by Innovation Score — but volume alone doesn't tell you where the strength sits.

  • Read that count against the largest US assignees before treating it as dominance — Fuzhou ranks #8,200 of 50,000. Top 50 holders
  • Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity — not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Explore the patent dataset

Top 50 patent holders

See where FUZHOU ESUN ELECTRONIC CO., LTD ranks among the largest US patent assignees
All technology classes

Browse every CPC technology area by patent activity
How the score works

The four dimensions behind the Innovation Score

Related

All companies → | All technologies → | Rankings →
Data sourced from USPTO PatentsView — official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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