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Metawater Co., Ltd.

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USPTO Granted Patents = 47

% Expired Patents = 2.1

CIPO Patents = 1

EPO Patents = 35

Trademarks = 3

Forward Citations = 62

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94 inventors (with patents filed for the assignee):

Dabide Yamaguchi (7 out of 7 patents)

Hiroyuki Takahashi (4 out of 218 patents)

Junichi Shiga (4 out of 4 patents)

4. Yoshiyuki Sugawara (4 out of 5 patents)

5. Shigehiro Suzuki (4 out of 4 patents)

6. Yoshiharu Tanaka (4 out of 11 patents)

7. Motoharu Noguchi (4 out of 6 patents)

8. Kyungju Kim (3 out of 3 patents)

9. Tsukasa Kusano (3 out of 3 patents)

10. Tetsumi Ochi (3 out of 12 patents)

11. Eiichi Tsuga (3 out of 3 patents)

12. Yusuke Kawakami (3 out of 3 patents)

13. Shinya Watanabe (3 out of 89 patents)

14. Eri Hasegawa (3 out of 3 patents)

15. Nobuki Tsuboi (3 out of 3 patents)

Core Competencies:

Water Treatment

Wastewater Treatment

Membrane Filtration

Sludge Dewatering

Organic Wastewater

Bromate Ion Measurement

Separation Device

Sedimentation

Reclaimed Water Production

Filtration System

Biological Nitrogen Removal

Control Apparatus

47 patents: Sort by Forward Citations

1. 12378143 - Water treatment system, water treatment method, and recording medium (2025-08-05),

2. 12357949 - Cleaning method of membrane filtration system and membrane filtration system (2025-07-15),

3. 12132414 - Power supply, control program, and control method (2024-10-29),

4. 12059636 - Mixing/clarifying device (2024-08-13),

5. 11821783 - Information processing system, information processing apparatus, program, and information processing method (2023-11-21),

6. 11655175 - Screw type separation device and wastewater treatment system (2023-05-23),

7. 11597667 - Wastewater treatment system, air supply amount control device, and air supply amount control method (2023-03-07),

8. 11459248 - Method of removing soluble manganese (2022-10-04),

9. 11331626 - Membrane filtration method (2022-05-17),

10. 11320356 - Method for estimating number of microparticles in sample (2022-05-03),

11. 11174181 - Accelerated oxidation treatment method and accelerated oxidation treatment device (2021-11-16),

12. 11142469 - Water treatment apparatus (2021-10-12),

13. 10850214 - Inclined sedimentation acceleration apparatus (2020-12-01),

14. 10800673 - Water treatment apparatus with dry gas flow (2020-10-13),

15. 10773981 - Sewage treatment system having a trickling filter with wash unit (2020-09-15),

Company Overview

Metawater Co., Ltd., headquartered in Tokyo, specializes in advanced water treatment technologies. The company focuses on innovative solutions for membrane filtration, wastewater treatment, and organic wastewater treatment, addressing critical environmental challenges. Metawater also develops technologies for bromate ion measurement, sludge dewatering, and oxidation treatment, contributing to sustainable water management practices. With a commitment to enhancing water quality and resource recovery, Metawater plays a vital role in the global water industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

47 Patents

#825 in Tokyo

#1,779 in Japan

#14,823 in the World

Metawater Co., Ltd.

Forward Citations = 62

94 inventors:

Dabide Yamaguchi (7 out of 7 patents)

Hiroyuki Takahashi (4 out of 218 patents)

Junichi Shiga (4 out of 4 patents)

4. Yoshiyuki Sugawara (4 out of 5 patents)

5. Shigehiro Suzuki (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Metawater Co., Ltd.. Retrieved from https://idiyas.com/company/metawater-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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