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Nittetu Chemical Engineering Ltd.

USPTO Granted Patents = 14

Forward Citations = 169

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28 inventors (with patents filed for the assignee):

Yoichi Shimoi (4 out of 4 patents)

Hidemasa Tsuruta (4 out of 4 patents)

Mikio Akune (4 out of 4 patents)

4. Yoshiaki Kinoshita (3 out of 3 patents)

5. Yoshiyuki Imagire (2 out of 3 patents)

6. Teruhiko Hirabayashi (2 out of 4 patents)

7. Toshiaki Kurihara (2 out of 2 patents)

8. Koji Kashima (1 out of 49 patents)

9. Isao Tanaka (1 out of 5 patents)

10. Hideo Tamura (1 out of 60 patents)

11. Yasuhiro Tateishi (1 out of 3 patents)

12. Takio Adachi (1 out of 2 patents)

13. Takao Suganuma (1 out of 3 patents)

14. Junichi Goda (1 out of 1 patent)

15. Masaomi Okazaki (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 6423235 - Column gas-liquid contacting apparatus and its use thereof (2002-07-23),

2. 6203704 - Method for separating objective component (2001-03-20),

3. 6039879 - Method for separating and recovering objective component (2000-03-21),

4. 5328670 - Method of treating nickel-containing etching waste fluid (1994-07-12),

5. 4425285 - Packing material unit (1984-01-10),

6. 4316878 - Method for the combustive treatment of waste fluids containing nitrogen (1982-02-23),

7. 4285820 - Process for the treatment of a waste liquid containing boron compounds (1981-08-25),

8. 4169131 - Process for recovering caustic alkali from spent alkali liquor (1979-09-25),

9. 4119538 - Treatment of waste liquid and apparatus therefor and a fertilizer (1978-10-10),

10. 4118467 - Treatment of gas containing hydrogen sulfide (1978-10-03),

11. 4093505 - Method and apparatus for heating and removing moisture from watery (1978-06-06),

12. 4062777 - Solid-fluid contacting apparatus (1977-12-13),

13. 4045341 - Method for the disposal of waste water containing ammonium ions, sulfate (1977-08-30),

14. 3941875 - Process for treating gas containing hydrogen sulfide (1976-03-02),

Company Overview

Nittetu Chemical Engineering Ltd., based in Tokyo, specializes in the development and manufacturing of advanced chemical engineering solutions. The company focuses on a diverse range of sectors, including materials science, environmental technology, and process engineering. With a commitment to innovation, Nittetu Chemical Engineering leverages cutting-edge research to enhance industrial processes and contribute to sustainable development. Its expertise positions the company as a key player in the chemical engineering landscape, both domestically and internationally.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

14 Patents

#1,599 in Tokyo

#3,584 in Japan

#42,290 in the World

Nittetu Chemical Engineering Ltd.

Forward Citations = 169

28 inventors:

Yoichi Shimoi (4 out of 4 patents)

Hidemasa Tsuruta (4 out of 4 patents)

Mikio Akune (4 out of 4 patents)

4. Yoshiaki Kinoshita (3 out of 3 patents)

5. Yoshiyuki Imagire (2 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nittetu Chemical Engineering Ltd.. Retrieved from https://idiyas.com/company/nittetu-chemical-engineering

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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