Where does Toto Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Toto Ltd. ranks #819 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 Toto Ltd. hold?

Toto Ltd. holds 560 US utility patents granted between 2015 and 2025, spanning 101 technology areas.

What is Toto Ltd.'s Innovation Score?

Toto Ltd. has an Innovation Score of 56.3 out of 100 (top 6% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Toto Ltd. focus on?

Toto Ltd.'s top technology area is E03D (Water-closets OR Urinals With Flushing DEVICES; Flushing Valves Therefor) with 245 patents, ranking #1 of 128 assignees active in that subclass. Grants appear in 101 CPC subclasses total.

Is Toto Ltd.'s patent grant rate increasing or decreasing?

Toto Ltd.'s recent grant velocity is -7% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Toto Ltd.'s patents?

Toto Ltd.'s patents average 8.3 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 Toto 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

Toto Ltd.

USPTO PatentsView assignee record - 560 granted patents across 101 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: E03D (Water-closets OR Urinals With Flushing DEVICES; Flushing Valves Therefor).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Toto ranks #819 of 49,997 tracked US assignees by granted-patent volume, with 560 patents across 101 technology areas.

#819
of 49,997 US assignees by volume: Top 6%
by Innovation Score (56.3/100): 8.3
avg claims per patent: -7%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R819 · Foreign Corporation #819 · 560 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MID 560 grants
TOP-DECILE #819/49,997
PHOTO-FINISH Unicharm
CPC-WIDE E03D · 101 areas
INNOV-PAR 56.3/100
CLAIMS-PAR 8.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT -7% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Unicharm Corporation (±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 Toto’s 56.3 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 21.9 pts (39%) Velocity 4.5 pts (8%) Breadth 25.0 pts (44%) Claim depth 5.0 pts (9%)

Qualcomm Incorporated · highest

85
Conti Temic… · near

56
Continental… · near

56
Neapco Intellectual… · near

56
Toto · this assignee

56
Upside Foods · near

56
3D Lighting… · lowest

7

What this shows Toto's Innovation Score is 56.3/100 (top 6% 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 Toto?

Each dot is one of Toto’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). Toto’s own 8.3 claims/patent is at or below the 11.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Toto's grant cadence moved

Between 2020–2024, Toto Ltd. received 253 grants versus 273 in 2015–2019 (-7% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2019 at 81 grants and bottomed in 2021 at 39. Lead class E03D accounts for 43.8% of the portfolio across 101 subclasses. Volume neighbours: Under Armour, Inc. (#815) and Minebea Mitsumi Inc. (#823).

Toto's three-year grant acceleration

From 2019–2021 to 2022–2024, Toto Ltd. moved from 200 to 134 grants (0.67x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #2,247. See the growth leaderboard.

Under Armour

563
Arts

561
Gilead Sciences

561
Yaskawa Denki

561
Unicharm

560
Toto ◀

560
Valeo Vision

559
Dümmen Group B V

558
Minebea Mitsumi

558

What this shows Toto holds 560 patents at rank #819, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Toto

By rank, the assignees closest to #819 in granted patent volume.

Leaders in E03D (Water-closets OR Urinals With Flushing Devices)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Toto, neither rank-band nor same-CPC leaders (those blocks stay above). In E03D (Water-closets OR Urinals With Flushing Devices), Toto ranks #1 of 128 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (56 here).

Neapco Intellectual Property Holdings, LLC 56 Upside Foods, Inc. 56 Continental Automotive France 56 Conti Temic microelectronic GmbH 56

Similar claim depth

Nearest assignees by average claims per patent (8.3 here).

Horiba, Ltd. 8.3 avg Sumitomo Seika Chemicals Co., Ltd. 8.3 avg Mitsubishi Jidosha Kogyo Kabushiki Kaisha 8.3 avg Zhejiang University 8.4 avg

Toto's Innovation Score vs. every tracked assignee

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

56 Top 6% higher than 94% 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

Toto Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	41	7.3%
2016	50	8.9%
2017	43	7.7%
2018	58	10.4%
2019	81	14.5%
2020	80	14.3%
2021	39	7.0%
2022	49	8.8%
2023	44	7.9%
2024	41	7.3%
2025partial year	34	6.1%

Which technologies does Toto Ltd. patent most?

E03D - Water-closets OR Urinals With Flushing DEVICES; Flushing Valves Therefor 245

H01L - Semiconductor Devices NOT Covered BY Class H10 59

A47K - Sanitary Equipment NOT Otherwise Provided FOR ; Toilet Accessories 57

E03C - Domestic Plumbing Installations FOR Fresh Water OR Waste Water ; Sinks 45

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 41

B05B - Spraying APPARATUS; Atomising APPARATUS; Nozzles 37

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 37

H01J - Electric Discharge Tubes OR Discharge Lamps 34

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 34

Y10T - Technical Subjects Covered BY Former US Classification 25

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 24

G01S - Radio DIRECTION-FINDING; Radio NAVIGATION; Determining Distance OR Velocity BY USE OF Radio WAVES; Locating OR Presence-detecting BY USE OF THE Reflection OR Reradiation OF Radio WAVES; Analogous Arrangements Using Other Waves 16

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 15

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 14

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 13

Top 15 of 101 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

Toto Ltd.'s patent record in context - here's where to go next.

Toto Ltd.'s lead technology class is E03D (Water-closets OR Urinals With Flushing DEVICES; Flushing Valves Therefor), 43.8% of its portfolio - see every assignee active in that class. Explore E03D
Ranked #819 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Toto Ltd. against Under Armour, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 56.3/100 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.