USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Kurita Water Industries Ltd.

USPTO PatentsView assignee record - 131 granted patents across 64 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C02F (TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

131

Total patents granted

CPC technology areas

8.2

Avg claims per patent

-2%

5-year filing velocity

The verdict

Kurita holds 131 US patents across 64 technology areas, rank #2,914 of 50,000 tracked assignees.

#2,914
of 50,000 US assignees by volume: Top 12%
by Innovation Score (50.8/100): 8.2
avg claims per patent: -2%
filing velocity, last 5 yrs

Portfolio overview

Kurita Water Industries Ltd. has been granted 131 US utility patents between 2015 and 2025, placing Kurita Water Industries Ltd. at rank #2,914 across all assignees tracked by PlainPatent. This portfolio spans 64 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.2 claims per patent with primary concentration in C02F (TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE). As a Foreign Corporation, Kurita Water Industries Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Kurita sits between Broan-nutone Llc (131 patents, rank #2,910) and Sanford L.p. (131 patents, rank #2,918) - the closest US assignees by grant volume. The composite Innovation Score of 50.8/100 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 65 grants, compared with 66 in the 2015–2019 window, a -2% 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. Kurita Water Industries Ltd.'s 8.2 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 64 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Kurita Water Industries Ltd. against peers pursuing similar technology classes.

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.

Kurita's Innovation Score vs. every tracked assignee

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

51 Top 12% higher than 88% 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

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%
2025	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

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#2,914

Across all tracked assignees

Innovation Score

50.8 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 Kurita Water Industries Ltd. hold?

Kurita Water Industries Ltd. holds 131 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing 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. The company has filed patents in 64 CPC subclasses total.

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

Kurita Water Industries Ltd.'s recent filing velocity is -2% compared to the prior five-year period. Filing 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 relatively simple claim structure, typical for focused inventions.

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.

How to use this portfolio

Kurita's 131 grants land it in the top 12% 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 - Kurita ranks #2,914 of 50,000. Top 50 holders
Most of this portfolio concentrates in C02F - see who else leads that technology area. C02F 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.

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

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.