USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Meijo NANO Carbon Co., Ltd.

USPTO PatentsView assignee record - 6 granted patents across 10 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C01B (NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

11.5

Avg claims per patent

+100%

5-year filing velocity

The verdict

Meijo holds 6 US patents across 10 technology areas, rank #41,555 of 50,000 tracked assignees.

#41,555
of 50,000 US assignees by volume: Top 42%
by Innovation Score (38.1/100): 11.5
avg claims per patent: +100%
filing velocity, last 5 yrs

Portfolio overview

Meijo NANO Carbon Co., Ltd. has been granted 6 US utility patents between 2015 and 2025, placing Meijo NANO Carbon Co., Ltd. at rank #41,555 across all assignees tracked by PlainPatent. This portfolio spans 10 distinct Cooperative Patent Classification (CPC) subclasses, averaging 11.5 claims per patent with primary concentration in C01B (NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C). As a Foreign Corporation, Meijo NANO Carbon Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Meijo sits between Medsapiens Co., Ltd. (6 patents, rank #41,551) and Meltin MMI Co., Ltd. (6 patents, rank #41,559) - the closest US assignees by grant volume. The composite Innovation Score of 38.1/100 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 4 grants, compared with 2 in the 2015–2019 window, a +100% 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. Meijo NANO Carbon Co., Ltd.'s 11.5 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 10 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Meijo NANO Carbon Co., Ltd. against peers pursuing similar technology classes.

Medsapiens

6
Medstreaming

6
MEGA SLAM Hoops

6
Megabass

6
Meishan CRRC Fast…

6
Melbourne Health

6
Melodea

6
Meltin MMI

6
Meijo NANO Carbon ◀

6

What this shows Meijo holds 6 patents at rank #41,555, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Meijo

By rank, the assignees closest to #41,555 in granted patent volume.

Leaders in C01B (Non-metallic Elements)

Other assignees with the most granted patents in Meijo's primary technology class.

Meijo's Innovation Score vs. every tracked assignee

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

38 Top 42% higher than 58% 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 · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Meijo NANO Carbon Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	33.3%
2022	1	16.7%
2023	1	16.7%
2025	2	33.3%

Which technologies does Meijo NANO Carbon Co., Ltd. patent most?

C01B - NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C 4

B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES 4

B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 2

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 2

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 2

C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS 1

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 1

C12M - APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS 1

H01B - CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES 1

H01G - CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 1

Top 10 of 10 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Velocity Accelerating

Where it ranks

Overall rank by patents

#41,555

Across all tracked assignees

Innovation Score

38.1 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 Meijo NANO Carbon Co., Ltd. hold?

Meijo NANO Carbon Co., Ltd. holds 6 US granted patents filed between 2015 and 2025, spanning 10 technology areas.

What is Meijo NANO Carbon Co., Ltd.'s Innovation Score?

Meijo NANO Carbon Co., Ltd. has an Innovation Score of 38.1 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Meijo NANO Carbon Co., Ltd. focus on?

Meijo NANO Carbon Co., Ltd.'s top technology area is C01B (NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C) with 4 patents. The company has filed patents in 10 CPC subclasses total.

Is Meijo NANO Carbon Co., Ltd.'s patent filing rate increasing or decreasing?

Meijo NANO Carbon Co., Ltd.'s recent filing velocity is +100% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Meijo NANO Carbon Co., Ltd.'s patents?

Meijo NANO Carbon Co., Ltd.'s patents average 11.5 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Meijo NANO Carbon 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.

How to use this portfolio

Meijo's 6 grants land it in the top 42% 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 - Meijo ranks #41,555 of 50,000. Top 50 holders
Most of this portfolio concentrates in C01B - see who else leads that technology area. C01B 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.

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

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.