Overall rank by patents
#260
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView Foreign Corporation
NGK INSULATORS, LTD.
USPTO PatentsView assignee record — 1,631 granted patents across 177 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C04B (LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE ; CERAMICS ; REFRACTORIES; TREATMENT OF NATURAL STONE).
1,631
Total patents granted
177
CPC technology areas
9.8
Avg claims per patent
+30%
5-year filing velocity
Portfolio overview
NGK INSULATORS, LTD. has been granted 1,631 US utility patents between 2015 and 2025, placing NGK INSULATORS, LTD. at rank #260 across all assignees tracked by PlainPatent. This portfolio spans 177 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.8 claims per patent with primary concentration in C04B (LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE ; CERAMICS ; REFRACTORIES; TREATMENT OF NATURAL STONE). As a Foreign Corporation, NGK INSULATORS, LTD. is one of the broader-portfolio assignees in the PatentsView dataset. The composite Innovation Score of 62.1/100 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 923 grants, compared with 708 in the 2015–2019 window — a +30% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. 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. NGK INSULATORS, LTD.'s 9.8 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a diversified footprint across 100+ CPC subclasses spreads risk across many technology fronts. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark NGK INSULATORS, LTD. against peers pursuing similar technology classes.
How does NGK 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
- NGK Insulators ◀ 1,631
NGK INSULATORS, LTD.
1,631 patents
What this shows NGK holds 1,631 patents — placing it at rank #260 overall, well behind the volume leaders but ahead of the tens of thousands of smaller assignees in the dataset.
USPTO utility patent grants by year · 2015–2025
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 | 136 | 8.3% |
| 2016 | 138 | 8.5% |
| 2017 | 110 | 6.7% |
| 2018 | 135 | 8.3% |
| 2019 | 189 | 11.6% |
| 2020 | 189 | 11.6% |
| 2021 | 168 | 10.3% |
| 2022 | 178 | 10.9% |
| 2023 | 139 | 8.5% |
| 2024 | 146 | 9.0% |
| 2025 | 103 | 6.3% |
Which technologies does NGK INSULATORS, LTD. patent most?
B01D— SEPARATION 417
Top 15 of 177 technology areas
Patent Moat Analysis
Portfolio Volume Strong
Tech Breadth Diversified
Claim Depth Simple
Velocity Growing
Frequently Asked Questions
How many patents does NGK INSULATORS, LTD. hold?
NGK INSULATORS, LTD. holds 1,631 US granted patents filed between 2015 and 2025, spanning 177 technology areas.
What is NGK INSULATORS, LTD.'s Innovation Score?
NGK INSULATORS, LTD. has an Innovation Score of 62.1 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does NGK INSULATORS, LTD. focus on?
NGK INSULATORS, LTD.'s top technology area is C04B (LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE ; CERAMICS ; REFRACTORIES; TREATMENT OF NATURAL STONE) with 451 patents. The company has filed patents in 177 CPC subclasses total.
Is NGK INSULATORS, LTD.'s patent filing rate increasing or decreasing?
NGK INSULATORS, LTD.'s recent filing velocity is +30% compared to the prior five-year period. The company is maintaining or growing its patent output.
What does claim depth mean for NGK INSULATORS, LTD.'s patents?
NGK INSULATORS, LTD.'s patents average 9.8 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the NGK INSULATORS, 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
Explore the patent dataset
C04B technology
NGK INSULATORS, LTD.'s primary CPC class — all holders and yearly trends
Top 50 patent holders
See where NGK INSULATORS, 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.
All federal data sources used on this page
- USPTO PatentsView — official U.S. Patent and Trademark Office bulk patent data. patentsview.org
- USPTO Patent Application Information Retrieval (PAIR) — application status and file history. uspto.gov/patents/pair
- USPTO Bulk Data Storage System — comprehensive patent text + claims dataset. bulkdata.uspto.gov
- USPTO CPC Classification — Cooperative Patent Classification scheme for technology categorization. uspto.gov/cpc
- SEC EDGAR — public filings cross-reference for assignee corporate entity matching. sec.gov/edgar
- WIPO PATENTSCOPE — international patent context (related international filings). wipo.int/patentscope
