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For the Inventor, By the Inventor

Osaka, Japan

Stella Chemifa Corporation

USPTO Granted Patents = 53

% Expired Patents = 56.6



Trademarks = 4

Forward Citations = 119

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70 inventors (with patents filed for the assignee):

goldMedal Tetsuo Nishida (26 out of 28 patents)

silverMedal Kazutaka Hirano (19 out of 19 patents)

bronzeMedal Masahide Waki (10 out of 18 patents)

4.  Shinji Hashiguchi (9 out of 12 patents)

5.  Megumi Tomisaki (9 out of 10 patents)

6.  Akihiro Nabeshima (8 out of 17 patents)

7.  Sojiro Kon (7 out of 7 patents)

8.  Yasutaka Tashiro (7 out of 8 patents)

9.  Masashi Yamamoto (7 out of 16 patents)

10.  Kazuhiro Miyamoto (6 out of 6 patents)

11.  Hiroaki Tokuda (6 out of 8 patents)

12.  Toshitaka Sakaguchi (5 out of 5 patents)

13.  Yoshifumi Katsura (5 out of 5 patents)

14.  Yoshinori Sato (5 out of 11 patents)

15.  Rui Hasebe (5 out of 5 patents)


Core Competencies:
Electrolyte Solutions
Nonaqueous Electrolyte
Fuel Cells
Quaternary Ammonium Salt
Fluoride Particles
Red Phosphor
Carbon Material
Microprocessing Treatment
Hollow Structural Body
Scintillator
Fluoride Crystal
Battery Technology

53 patents:

1. 12760186 - Liquid dispersion of fluoride particles, composition for forming optical film, and optical film (2026-10-13),
2. 12637615 - Microprocessing treatment agent and microprocessing treatment method (2026-05-26),
3. 12422591 - Liquid dispersion of fluoride particles and method for producing same, and optical film (2025-09-23),
4. 12191448 - Nonaqueous electrolyte solution for secondary battery, and secondary battery provided with said solution (2025-01-07),
5. 11965123 - Red phosphor and method for producing same (2024-04-23),
6. 11964871 - Immobilized product and method for producing same (2024-04-23),
7. 11548993 - Method for modifying fluoring resin film (2023-01-10),
8. 11469424 - Fuel cell catalyst, membrane electrode assembly for fuel cell, and fuel cell including the same (2022-10-11),
9. 11180515 - Non-aqueous electrolytic solution for power storage element (2021-11-23),
10. 11155465 - Cross-linked structure of carbon material and method for producing same (2021-10-26),
11. 11005125 - Nonaqueous electrolyte solution for secondary batteries and secondary battery provided with same (2021-05-11),
12. 10938066 - Nonaqueous electrolyte solution for secondary batteries and secondary battery provided with same (2021-03-02),
13. 10793585 - Phosphoric acid diester salt, production method therefor, non-aqueous electrolytic solution for power storage element, and power storage element (2020-10-06),
14. 10112835 - Method for purifying difluorophosphate (2018-10-30),
15. 10046971 - Nitrogen-containing carbon material and method of manufacturing the same (2018-08-14),
Company Overview
Stella Chemifa Corporation, based in Osaka, Japan, specializes in the development and manufacturing of advanced electrolyte solutions. The company focuses on nonaqueous electrolytes, which are essential for fuel cells and various energy storage applications. Their expertise extends to quaternary ammonium salts, fluoride particles, red phosphor, and carbon materials, all of which play a critical role in enhancing the performance and efficiency of electrochemical systems. Stella Chemifa is committed to innovation in the field of energy materials, contributing to advancements in sustainable technologies.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

53 Patents

#181 in Osaka

#1,652 in Japan

#13,348 in the World

Osaka, JP
Osaka, Japan

Stella Chemifa Corporation

Forward Citations = 119

70 inventors:

goldMedal Tetsuo Nishida (26 out of 28 patents)

silverMedal Kazutaka Hirano (19 out of 19 patents)

bronzeMedal Masahide Waki (10 out of 18 patents)

4.  Shinji Hashiguchi (9 out of 12 patents)

5.  Megumi Tomisaki (9 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Stella Chemifa Corporation. Retrieved from https://idiyas.com/company/stella-chemifa

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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