Where does Kurita Water Industries Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Kurita Water Industries Ltd. ranks #2,914 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 Kurita Water Industries Ltd. hold?

Kurita Water Industries Ltd. holds 131 US utility patents granted between 2015 and 2025, spanning 64 technology areas.

What is Kurita Water Industries Ltd.'s Innovation Score?

Kurita Water Industries Ltd. has an Innovation Score of 50.8 out of 100 (top 12% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Kurita Water Industries Ltd. focus on?

Kurita Water Industries Ltd.'s top technology area is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge) with 80 patents, ranking #6 of 1,366 assignees active in that subclass. Grants appear in 64 CPC subclasses total.

Is Kurita Water Industries Ltd.'s patent grant rate increasing or decreasing?

Kurita Water Industries Ltd.'s recent grant velocity is -12% 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 Kurita Water Industries Ltd.'s patents?

Kurita Water Industries Ltd.'s patents average 8.2 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 Kurita Water Industries 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

Kurita Water Industries Ltd.

USPTO PatentsView assignee record - 131 granted patents across 64 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: C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Kurita ranks #2,914 of 49,997 tracked US assignees by granted-patent volume, with 131 patents across 64 technology areas.

#2,914
of 49,997 US assignees by volume: Top 12%
by Innovation Score (50.8/100): 8.2
avg claims per patent: -12%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R2914 · Foreign Corporation #2,914 · 131 grants

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

GRANTS-MID 131 grants
TOP-DECILE #2,914/49,997
PHOTO-FINISH Broan-NuTone
CPC-WIDE C02F · 64 areas
INNOV-PAR 50.8/100
CLAIMS-PAR 8.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -12% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Broan-NuTone LLC (±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 Kurita’s 50.8 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 16.9 pts (33%) Velocity 4.0 pts (8%) Breadth 25.0 pts (49%) Claim depth 4.9 pts (10%)

Qualcomm Incorporated · highest

85
BorgWarner Ludwigsburg · near

51
Chatsworth Products · near

51
Korea Research… · near

51
Kurita Water… · this assignee

51
Tamura · near

51
3D Lighting… · lowest

7

What this shows Kurita's Innovation Score is 50.8/100 (top 12% 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 Kurita?

Each dot is one of Kurita’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). Kurita’s own 8.2 claims/patent is at or below the 8.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Kurita's grant cadence moved

Between 2020–2024, Kurita Water Industries Ltd. received 58 grants versus 66 in 2015–2019 (-12% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2020 at 19 grants and bottomed in 2024 at 6. Lead class C02F accounts for 61.1% of the portfolio across 64 subclasses. Volume neighbours: Broan-NuTone LLC (#2,910) and Sanford L.P. (#2,918).

Kurita's three-year grant acceleration

From 2019–2021 to 2022–2024, Kurita Water Industries Ltd. moved from 47 to 28 grants (0.60x 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 #2,458. See the growth leaderboard.

Broan-nutone

131
Diversey

131
Epoch

131
Inno-pak

131
Newsouth Innovati…

131
Shenzhen Qianhai…

131
Shpp Global B V

131
Sanford

131
Kurita Water Indu… ◀

131

What this shows Kurita holds 131 patents at rank #2,914, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Kurita

By rank, the assignees closest to #2,914 in granted patent volume.

Leaders in C02F (Treatment OF Water)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Kurita, neither rank-band nor same-CPC leaders (those blocks stay above). In C02F (Treatment OF Water), Kurita ranks #6 of 1,366 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (51 here).

Tamura Corporation 51 Chatsworth Products, Inc. 51 Korea Research Institute OF Bioscience AND Biotechnology 51 BorgWarner Ludwigsburg GmbH 51

Similar claim depth

Nearest assignees by average claims per patent (8.2 here).

Inje University Industry-academic Cooperation Foundation 8.2 avg Hitachi-Johnson Controls Air Conditioning, Inc. 8.2 avg Meiji Seika Pharma Co., Ltd. 8.2 avg Callaway Golf Company 8.2 avg

Kurita's Innovation Score vs. every tracked assignee

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

51 Top 12% higher than 88% 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

Kurita Water Industries Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	15	11.5%
2016	14	10.7%
2017	10	7.6%
2018	10	7.6%
2019	17	13.0%
2020	19	14.5%
2021	11	8.4%
2022	15	11.5%
2023	7	5.3%
2024	6	4.6%
2025partial year	7	5.3%

Which technologies does Kurita Water Industries Ltd. patent most?

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 80

B01D - Separation 46

H01L - Semiconductor Devices NOT Covered BY Class H10 21

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 17

C11D - Detergent COMPOSITIONS; USE OF Single Substances AS DETERGENTS; Soap OR SOAP-MAKING; Resin SOAPS; Recovery OF Glycerol 15

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 15

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 14

C23F - Non-mechanical Removal OF Metallic Material From Surface ; Inhibiting Corrosion OF Metallic Material OR Incrustation IN GENERAL; Multi-step Processes FOR Surface Treatment OF Metallic Material Involving AT Least ONE Process Provided FOR IN Class C23 AND AT Least ONE Process Covered BY Subclass C21d 9

Y02A - Technologies FOR Adaptation TO Climate Change 9

B01F - Mixing, e.g. Dissolving, Emulsifying OR Dispersing 8

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 7

A01N - Preservation OF Bodies OF Humans OR Animals OR Plants OR Parts Thereof ; Biocides, e.g. AS Disinfectants, AS Pesticides OR AS Herbicides ; Pest Repellants OR ATTRACTANTS; Plant Growth Regulators 7

D21H - Pulp COMPOSITIONS; Preparation Thereof NOT Covered BY Subclasses D21c OR D21D; Impregnating OR Coating OF PAPER; Treatment OF Finished Paper NOT Covered BY Class B31 OR Subclass D21G; Paper NOT Otherwise Provided FOR 6

C25B - Electrolytic OR Electrophoretic Processes FOR THE Production OF Compounds OR NON-METALS; Apparatus Therefor 6

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 6

Top 15 of 64 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

Kurita Water Industries Ltd.'s patent record in context - here's where to go next.

Kurita Water Industries Ltd.'s lead technology class is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge), 61.1% of its portfolio - see every assignee active in that class. Explore C02F
Ranked #2,914 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Kurita Water Industries Ltd. against Broan-NuTone LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 50.8/100 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.