Overall rank by patents
#15,007
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView Foreign Corporation
Tokai Carbon Korea Co., Ltd.
USPTO PatentsView assignee record — 20 granted patents across 17 technology areas, active 2018–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C23C (COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAP).
20
Total patents granted
17
CPC technology areas
10.2
Avg claims per patent
+1800%
5-year filing velocity
Portfolio overview
Tokai Carbon Korea Co., Ltd. has been granted 20 US utility patents between 2018 and 2025, placing Tokai Carbon Korea Co., Ltd. at rank #15,007 across all assignees tracked by PlainPatent. This portfolio spans 17 distinct Cooperative Patent Classification (CPC) subclasses, averaging 10.2 claims per patent with primary concentration in C23C (COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAP). As a Foreign Corporation, Tokai Carbon Korea Co., Ltd. is one of the more focused assignees in the PatentsView dataset. The composite Innovation Score of 48.5/100 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 19 grants, compared with 1 in the 2015–2019 window — a +1800% 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. Tokai Carbon Korea Co., Ltd.'s 10.2 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 17 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Tokai Carbon Korea Co., Ltd. against peers pursuing similar technology classes.
How does Tokai 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
- Tokai Carbon Korea ◀ 20
Tokai Carbon Korea Co., Ltd.
20 patents
What this shows Tokai holds 20 patents — placing it at rank #15,007 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 · 2018–2025
Grants by year
Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.
View data table
| Year | Patents Granted | Share of Period |
|---|---|---|
| 2018 | 1 | 5.0% |
| 2020 | 1 | 5.0% |
| 2021 | 4 | 20.0% |
| 2022 | 5 | 25.0% |
| 2023 | 6 | 30.0% |
| 2024 | 2 | 10.0% |
| 2025 | 1 | 5.0% |
Which technologies does Tokai Carbon Korea Co., Ltd. patent most?
Top 15 of 17 technology areas
Patent Moat Analysis
Portfolio Volume Light
Tech Breadth Focused
Claim Depth Simple
Velocity Accelerating
Frequently Asked Questions
How many patents does Tokai Carbon Korea Co., Ltd. hold?
Tokai Carbon Korea Co., Ltd. holds 20 US granted patents filed between 2018 and 2025, spanning 17 technology areas.
What is Tokai Carbon Korea Co., Ltd.'s Innovation Score?
Tokai Carbon Korea Co., Ltd. has an Innovation Score of 48.5 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does Tokai Carbon Korea Co., Ltd. focus on?
Tokai Carbon Korea Co., Ltd.'s top technology area is C23C (COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL) with 12 patents. The company has filed patents in 17 CPC subclasses total.
Is Tokai Carbon Korea Co., Ltd.'s patent filing rate increasing or decreasing?
Tokai Carbon Korea Co., Ltd.'s recent filing velocity is +1800% compared to the prior five-year period. This indicates accelerating innovation.
What does claim depth mean for Tokai Carbon Korea Co., Ltd.'s patents?
Tokai Carbon Korea Co., Ltd.'s patents average 10.2 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the Tokai Carbon Korea 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
Explore the patent dataset
C23C technology
Tokai Carbon Korea Co., Ltd.'s primary CPC class — all holders and yearly trends
Top 50 patent holders
See where Tokai Carbon Korea 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.
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
