Where does Rohto Pharmaceutical Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Rohto Pharmaceutical Co., Ltd. ranks #8,470 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Rohto Pharmaceutical Co., Ltd. hold?

Rohto Pharmaceutical Co., Ltd. holds 38 US utility patents granted between 2015 and 2025, spanning 20 technology areas.

What is Rohto Pharmaceutical Co., Ltd.'s Innovation Score?

Rohto Pharmaceutical Co., Ltd. has an Innovation Score of 36.3 out of 100 (top 47% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Rohto Pharmaceutical Co., Ltd. focus on?

Rohto Pharmaceutical Co., Ltd.'s top technology area is A61K (Preparations FOR Medical, Dental OR Toiletry Purposes) with 27 patents, ranking #847 of 7,163 assignees active in that subclass. Grants appear in 20 CPC subclasses total.

Is Rohto Pharmaceutical Co., Ltd.'s patent grant rate increasing or decreasing?

Rohto Pharmaceutical Co., Ltd.'s recent grant velocity is +6% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Rohto Pharmaceutical Co., Ltd.'s patents?

Rohto Pharmaceutical Co., Ltd.'s patents average 7.1 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Rohto Pharmaceutical 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Rohto Pharmaceutical Co., Ltd.

USPTO PatentsView assignee record - 38 granted patents across 20 technology areas, recorded in grant years 2015–2025. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: A61K (Preparations FOR Medical, Dental OR Toiletry Purposes).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Rohto ranks #8,470 of 49,997 tracked US assignees by granted-patent volume, with 38 patents across 20 technology areas.

#8,470
of 49,997 US assignees by volume: Top 47%
by Innovation Score (36.3/100): 7.1
avg claims per patent: +6%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8470 · Foreign Corporation #8,470 · 38 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-SMALL 38 grants
UPPER-Q #8,470/49,997
PHOTO-FINISH Pure Fishing
CPC-FOCUS A61K · 20 areas
INNOV-THIN 36.3/100
CLAIMS-SPARSE 7.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +6% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Pure Fishing, Inc. (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Rohto’s 36.3 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 12.7 pts (35%) Velocity 3.6 pts (10%) Breadth 15.8 pts (44%) Claim depth 4.2 pts (12%)

Qualcomm Incorporated · highest

85
Glu Mobile · near

36
Rohto Pharmaceutical · this assignee

36
Shenzhen S-hande… · near

36
X-Energy · near

36
Intelmate · near

36
3D Lighting… · lowest

7

What this shows Rohto's Innovation Score is 36.3/100 (top 47% of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Rohto?

Each dot is one of Rohto’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Rohto’s own 7.1 claims/patent is at or below the 14.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Rohto vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Rohto's grants concentrate

Rohto Pharmaceutical Co., Ltd. is a focused PatentsView assignee: 20 CPC subclasses with 71.1% of grants classified under A61K (Preparations FOR Medical, Dental OR Toiletry Purposes). Peak complete grant year is 2016 (5 grants) versus a trough of 1 in 2024. By volume, Rohto sits between Pure Fishing, Inc. and SDCmaterials, Inc..

Rohto's three-year grant acceleration

Rohto Pharmaceutical Co., Ltd. shows 7 grants in 2022–2024 against only 13 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Pure Fishing

38
QSC

38
Quantum Valley Id…

38
RDI

38
Red Bull

38
S D Sight Diagnos…

38
SBI Pharmaceutica…

38
Sdcmaterials

38
Rohto Pharmaceuti… ◀

38

What this shows Rohto holds 38 patents at rank #8,469, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Rohto

By rank, the assignees closest to #8,469 in granted patent volume.

Leaders in A61K (Preparations FOR Medical)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Rohto, neither rank-band nor same-CPC leaders (those blocks stay above). In A61K (Preparations FOR Medical), Rohto ranks #847 of 7,163 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (36 here).

Shenzhen S-hande Technology Co., Ltd. 36 X-Energy, LLC 36 Glu Mobile Inc. 36 Intelmate LLC 36

Rohto's Innovation Score vs. every tracked assignee

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

36 Top 47% higher than 53% of 49,997 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

Rohto Pharmaceutical Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	4	10.5%
2016	5	13.2%
2017	2	5.3%
2018	2	5.3%
2019	3	7.9%
2020	5	13.2%
2021	5	13.2%
2022	4	10.5%
2023	2	5.3%
2024	1	2.6%
2025partial year	5	13.2%

Which technologies does Rohto Pharmaceutical Co., Ltd. patent most?

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 27

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 25

A61Q - Specific USE OF Cosmetics OR Similar Toiletry Preparations 7

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 4

C12N - Microorganisms OR ENZYMES; Compositions THEREOF; Propagating, Preserving, OR Maintaining MICROORGANISMS; Mutation OR Genetic ENGINEERING; Culture Media 4

A61J - Containers Specially Adapted FOR Medical OR Pharmaceutical PURPOSES; Devices OR Methods Specially Adapted FOR Bringing Pharmaceutical Products Into Particular Physical OR Administering FORMS; Devices FOR Administering Food OR Medicines ORALLY; Baby COMFORTERS; Devices FOR Receiving Spittle 3

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 2

C07D - Heterocyclic Compounds 2

Y02A - Technologies FOR Adaptation TO Climate Change 2

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 1

B01L - Chemical OR Physical Laboratory Apparatus FOR General USE 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

B25J - MANIPULATORS; Chambers Provided With Manipulation Devices 1

C12Q - Measuring OR Testing Processes Involving Enzymes, Nucleic Acids OR Microorganisms ; Compositions OR Test Papers THEREFOR; Processes OF Preparing Such COMPOSITIONS; Condition-responsive Control IN Microbiological OR Enzymological Processes 1

A23L - Foods, Foodstuffs OR Non-alcoholic Beverages, NOT Otherwise Provided FOR; Preparation OR Treatment Thereof 1

Top 15 of 20 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Rohto Pharmaceutical Co., Ltd.'s patent record in context - here's where to go next.

Rohto Pharmaceutical Co., Ltd.'s lead technology class is A61K (Preparations FOR Medical, Dental OR Toiletry Purposes), 71.1% of its portfolio - see every assignee active in that class. Explore A61K
Ranked #8,470 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Rohto Pharmaceutical Co., Ltd. against Pure Fishing, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 36.3/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

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 by PlainPatent, US Patent Intelligence Editorial Process · 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.