Overall rank by patents
#8,879
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView Foreign Corporation
Nagaki Seiki Co., Ltd.
USPTO PatentsView assignee record — 36 granted patents across 15 technology areas, active 2015–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: H02G (INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES).
36
Total patents granted
15
CPC technology areas
3.7
Avg claims per patent
-11%
5-year filing velocity
The verdict
Nagaki holds 36 US patents across 15 technology areas — rank #8,879 of 50,000 tracked assignees.
- #8,879
- of 50,000 US assignees by volume
- Top 66%
- by Innovation Score (30.4/100)
- 3.7
- avg claims per patent
- -11%
- filing velocity, last 5 yrs
Portfolio overview
NAGAKI SEIKI CO., LTD. has been granted 36 US utility patents between 2015 and 2024, placing NAGAKI SEIKI CO., LTD. at rank #8,879 across all assignees tracked by PlainPatent. This portfolio spans 15 distinct Cooperative Patent Classification (CPC) subclasses, averaging 3.7 claims per patent with primary concentration in H02G (INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES). As a Foreign Corporation, NAGAKI SEIKI CO., LTD. is one of the more focused assignees in the PatentsView dataset. The composite Innovation Score of 30.4/100 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 17 grants, compared with 19 in the 2015–2019 window — a -11% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. 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. NAGAKI SEIKI CO., LTD.'s 3.7 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 15 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark NAGAKI SEIKI CO., LTD. against peers pursuing similar technology classes.
How does NAGAKI compare?
Granted US patents 2015–2025 versus the largest corporate holders — this company marked ◀
- Samsung
SAMSUNG ELECTRONICS CO., LTD.
106,890 patents
- International Bus…
International Business Machines Corporation
72,926 patents
- Canon 34,378
Canon Kabushiki Kaisha
34,378 patents
- LG 32,607
LG ELECTRONICS INC.
32,607 patents
- Taiwan Semiconduc… 31,041
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
31,041 patents
- Apple 30,560
Apple Inc.
30,560 patents
- Qualcomm Incorpor… 30,354
QUALCOMM Incorporated
30,354 patents
- Intel 27,498
Intel Corporation
27,498 patents
- Nagaki Seiki ◀ 36
NAGAKI SEIKI CO., LTD.
36 patents
What this shows NAGAKI holds 36 patents — placing it at rank #8,879 overall, well behind the volume leaders but ahead of the tens of thousands of smaller assignees in the dataset.
NAGAKI's Innovation Score vs. every tracked assignee
Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)
30 Top 66% higher than 34% of 50,000 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 · 2015–2024
Grants by year
Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.
View data table
| Year | Patents Granted | Share of Period |
|---|---|---|
| 2015 | 1 | 2.8% |
| 2016 | 3 | 8.3% |
| 2017 | 2 | 5.6% |
| 2019 | 13 | 36.1% |
| 2020 | 7 | 19.4% |
| 2021 | 3 | 8.3% |
| 2022 | 3 | 8.3% |
| 2023 | 2 | 5.6% |
| 2024 | 2 | 5.6% |
Which technologies does NAGAKI SEIKI CO., LTD. patent most?
Top 15 of 15 technology areas
Patent Moat Analysis
Portfolio Volume Light
Tech Breadth Focused
Claim Depth Simple
Velocity Declining
Frequently Asked Questions
How many patents does NAGAKI SEIKI CO., LTD. hold?
NAGAKI SEIKI CO., LTD. holds 36 US granted patents filed between 2015 and 2024, spanning 15 technology areas.
What is NAGAKI SEIKI CO., LTD.'s Innovation Score?
NAGAKI SEIKI CO., LTD. has an Innovation Score of 30.4 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does NAGAKI SEIKI CO., LTD. focus on?
NAGAKI SEIKI CO., LTD.'s top technology area is H02G (INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES) with 15 patents. The company has filed patents in 15 CPC subclasses total.
Is NAGAKI SEIKI CO., LTD.'s patent filing rate increasing or decreasing?
NAGAKI SEIKI CO., LTD.'s recent filing velocity is -11% compared to the prior five-year period. Filing activity has slowed relative to earlier years.
What does claim depth mean for NAGAKI SEIKI CO., LTD.'s patents?
NAGAKI SEIKI CO., LTD.'s patents average 3.7 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the NAGAKI SEIKI 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 to use this portfolio
Nagaki's 36 grants land it in the top 66% 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 — Nagaki ranks #8,879 of 50,000. Top 50 holders
- Most of this portfolio concentrates in H02G — see who else leads that technology area. H02G leaders
- 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
H02G technology
NAGAKI SEIKI CO., LTD.'s primary CPC class — all holders and yearly trends
Top 50 patent holders
See where NAGAKI SEIKI 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
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
