Overall rank by patents
#33,749
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView Foreign Corporation
University Of The Ryukyus
USPTO PatentsView assignee record - 8 granted patents across 20 technology areas, active 2018–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: A61K (PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES).
8
Total patents granted
20
CPC technology areas
8.9
Avg claims per patent
+200%
5-year filing velocity
The verdict
University holds 8 US patents across 20 technology areas, rank #33,749 of 50,000 tracked assignees.
- #33,749
- of 50,000 US assignees by volume
- Top 66%
- by Innovation Score (30.4/100)
- 8.9
- avg claims per patent
- +200%
- filing velocity, last 5 yrs
Portfolio overview
University Of The Ryukyus has been granted 8 US utility patents between 2018 and 2025, placing University Of The Ryukyus at rank #33,749 across all assignees tracked by PlainPatent. This portfolio spans 20 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.9 claims per patent with primary concentration in A61K (PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES). As a Foreign Corporation, University Of The Ryukyus is one of the more focused assignees in the PatentsView dataset. By volume, University sits between University Of North Carolina (8 patents, rank #33,745) and Urban Mining Corp B.v. (8 patents, rank #33,753) - the closest US assignees by grant volume. 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 6 grants, compared with 2 in the 2015–2019 window, a +200% 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. University Of The Ryukyus's 8.9 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 20 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark University Of The Ryukyus against peers pursuing similar technology classes.
Who files at University's volume?
Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀
- University of Nor…
University of North Carolina
8 patents
- University of Ply…
University of Plymouth
8 patents
- University of Tar…
University of Tartu
8 patents
- University of Tok…
University of Tokushima
8 patents
- University of the…
University of the West of England, Bristol
8 patents
- Université Paris…
Université Paris Diderot
8 patents
- Urban Intel
Urban Intel, Inc.
8 patents
- Urban Mining B V
Urban Mining Corp B.V.
8 patents
- University of the… ◀
University of the Ryukyus
8 patents
What this shows University holds 8 patents at rank #33,749, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.
Companies ranked near University
By rank, the assignees closest to #33,749 in granted patent volume.
- University Of North Carolina #33,745 · 8 patents
- University Of Plymouth #33,746 · 8 patents
- University Of Tartu #33,747 · 8 patents
- University Of Tokushima #33,748 · 8 patents
- University Of The West Of England, Bristol #33,750 · 8 patents
- Université Paris Diderot #33,751 · 8 patents
- Urban Intel, Inc. #33,752 · 8 patents
- Urban Mining Corp B.v. #33,753 · 8 patents
Leaders in A61K (Preparations FOR Medical)
Other assignees with the most granted patents in University's primary technology class.
- The Regents Of The University Of California 1,779 in class
- L'oreal 1,250 in class
- Novartis Ag 988 in class
- The Procter & Gamble Company 985 in class
- The Board Of Regents Of The University Of Texas System 950 in class
- The United States Of America, As Represented By The Secretary, Department Of Health And Human Services 813 in class
- The Trustees Of The University Of Pennsylvania 768 in class
- Merck Sharp & Dohme Llc 760 in class
University'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
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 | 12.5% |
| 2019 | 1 | 12.5% |
| 2020 | 3 | 37.5% |
| 2024 | 1 | 12.5% |
| 2025 | 2 | 25.0% |
Which technologies does University Of The Ryukyus patent most?
Top 15 of 20 technology areas
Patent Moat Analysis
Portfolio Volume Light
Tech Breadth Multi-domain
Claim Depth Simple
Velocity Accelerating
Frequently Asked Questions
How many patents does University Of The Ryukyus hold?
University Of The Ryukyus holds 8 US granted patents filed between 2018 and 2025, spanning 20 technology areas.
What is University Of The Ryukyus's Innovation Score?
University Of The Ryukyus 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 University Of The Ryukyus focus on?
University Of The Ryukyus's top technology area is A61K (PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES) with 4 patents. The company has filed patents in 20 CPC subclasses total.
Is University Of The Ryukyus's patent filing rate increasing or decreasing?
University Of The Ryukyus's recent filing velocity is +200% compared to the prior five-year period. This indicates accelerating innovation.
What does claim depth mean for University Of The Ryukyus's patents?
University Of The Ryukyus's patents average 8.9 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the University Of The Ryukyus 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
University's 8 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 - University ranks #33,749 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.
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.