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USPTO 2015–2025 USPTO PatentsView Foreign Corporation

NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY

USPTO PatentsView assignee record — 105 granted patents across 79 technology areas, active 2015–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: A61K (PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES).

Explore the portfolio See the ranking
105
Total patents granted
79
CPC technology areas
10.7
Avg claims per patent
-31%
5-year filing velocity

The verdict

NATIONAL holds 105 US patents across 79 technology areas — rank #3,505 of 50,000 tracked assignees.

#3,505
of 50,000 US assignees by volume
Top 9%
by Innovation Score (53.1/100)
10.7
avg claims per patent
-31%
filing velocity, last 5 yrs

Portfolio overview

NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY has been granted 105 US utility patents between 2015 and 2024, placing NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY at rank #3,505 across all assignees tracked by PlainPatent. This portfolio spans 79 distinct Cooperative Patent Classification (CPC) subclasses, averaging 10.7 claims per patent with primary concentration in A61K (PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES). As a Foreign Corporation, NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY is one of the broader-portfolio assignees in the PatentsView dataset. The composite Innovation Score of 53.1/100 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 43 grants, compared with 62 in the 2015–2019 window — a -31% 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. NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY's 10.7 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 79 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY against peers pursuing similar technology classes.

How does NATIONAL compare?

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

patents

What this shows NATIONAL holds 105 patents — placing it at rank #3,505 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

NATIONAL's Innovation Score vs. every tracked assignee

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

53 Top 9% higher than 91% of 50,000 US assignees

0–10: 687 US assignees (1%). Below this entry. 10–20: 2,527 US assignees (5%). Below this entry. 20–30: 13,162 US assignees (26%). Below this entry. 30–40: 15,294 US assignees (31%). Below this entry. 40–50: 11,491 US assignees (23%). Below this entry. 50–60: 5,058 US assignees (10%). This entry sits in this band. 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 · 2015–2024

05101520 2015201620172018201920202021202220232024 5
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
NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY patent grants by year, 2015–2025
Year Patents Granted Share of Period
2015 10 9.5%
2016 13 12.4%
2017 6 5.7%
2018 17 16.2%
2019 16 15.2%
2020 6 5.7%
2021 10 9.5%
2022 10 9.5%
2023 12 11.4%
2024 5 4.8%

Which technologies does NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY patent most?

Top 15 of 79 technology areas

Patent Moat Analysis

Portfolio Volume Moderate
Tech Breadth Multi-domain
Claim Depth Simple
Velocity Declining

Where it ranks

Overall rank by patents

#3,505

Across all tracked assignees

Innovation Score

53.1 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 NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY hold?
NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY holds 105 US granted patents filed between 2015 and 2024, spanning 79 technology areas.
What is NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY's Innovation Score?
NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY has an Innovation Score of 53.1 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY focus on?
NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY's top technology area is A61K (PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES) with 37 patents. The company has filed patents in 79 CPC subclasses total.
Is NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY's patent filing rate increasing or decreasing?
NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY's recent filing velocity is -31% compared to the prior five-year period. Filing activity has slowed relative to earlier years.
What does claim depth mean for NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY's patents?
NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY's patents average 10.7 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY 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

National's 105 grants land it in the top 9% 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 — National ranks #3,505 of 50,000. Top 50 holders
  • Most of this portfolio concentrates in A61K — see who else leads that technology area. A61K 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

A61K technology

NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY's primary CPC class — all holders and yearly trends
Top 50 patent holders

See where NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY 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