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Otsuka Electronics Co., Ltd.

USPTO Granted Patents = 81

EPO Patents = 16

Trademarks = 17

Forward Citations = 471

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88 inventors (with patents filed for the assignee):

Kazuaki Ohkubo (13 out of 13 patents)

Tsutomu Mizuguchi (11 out of 11 patents)

Hisashi Shiraiwa (9 out of 9 patents)

4. Koichi Oka (9 out of 10 patents)

5. Kunikazu Taguchi (7 out of 7 patents)

6. Hiroyuki Sano (7 out of 7 patents)

7. Ikuo Wakayama (6 out of 6 patents)

8. Yoshihiro Osawa (6 out of 6 patents)

9. Yoshi Enami (6 out of 6 patents)

10. Nobuyuki Inoue (5 out of 5 patents)

11. Hiroya Nagasawa (5 out of 5 patents)

12. Shiro Kawaguchi (4 out of 4 patents)

13. Makoto Okawauchi (4 out of 5 patents)

14. Kazunori Tsutsui (4 out of 8 patents)

15. Katsuhiro Morisawa (4 out of 6 patents)

Core Competencies:

Photodynamic Therapy

Zeta-Potential Measurement

Optical Measurement

Particle Size Measurement

Luminous Body Measurement

Confocal Optical Systems

Spectrophotometry

Polarization Analysis

Quantum Efficiency Measurement

Optical Spectrum Measurement

Light Distribution Characteristics

Electrophoretic Mobility Measurement

81 patents: Sort by Forward Citations

1. 12433987 - Photodynamic therapy device (2025-10-07),

2. 12411108 - Zeta-potential measurement jig set (2025-09-09),

3. 12174103 - Light scattering measuring apparatus and measuring jig (2024-12-24),

4. 12111146 - Optical measurement apparatus and optical measurement method (2024-10-08),

5. 12023429 - Photodynamic therapy device and photodynamic therapy device cartridge (2024-07-02),

6. 11953465 - Zeta-potential measurement jig (2024-04-09),

7. 11892281 - Optical measurement system, optical measurement method, and non-transitory storage medium having measurement program stored thereon (2024-02-06),

8. 11598713 - Particle size measurement method, particle size measurement apparatus, and particle size measurement program (2023-03-07),

9. D962096 - Sample analyzer (2022-08-30),

10. 11293750 - Film thickness measuring apparatus and film thickness measuring method (2022-04-05),

11. 11215443 - Optical measurement apparatus and optical measurement method (2022-01-04),

12. 10996106 - Luminous body measurement apparatus and luminous body measurement method comprising a control unit to pivot a first and a second arm to hold an image pickup device in plural postures (2021-05-04),

13. 10795067 - Confocal optical system-based measurement apparatus and method for manufacturing confocal optical system-based measurement apparatus (2020-10-06),

14. 10788412 - Optical measurement apparatus, and optical measurement method (2020-09-29),

15. 10733750 - Optical characteristics measuring method and optical characteristics measuring system (2020-08-04),

Otsuka Electronics Co., Ltd. is a leading Japanese company specializing in the design, development, and manufacturing of electronic products and solutions. With a strong emphasis on innovation and advanced technology, Otsuka Electronics offers a wide range of high-quality consumer electronics, industrial equipment, and electronic components. They cater to various industries, including automotive, telecommunications, medical, and more. With a commitment to delivering reliable and cutting-edge products, Otsuka Electronics has established a strong presence both domestically and globally.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

81 Patents

#119 in Osaka

#1,247 in Japan

#8,983 in the World

Otsuka Electronics Co., Ltd.

Forward Citations = 471

88 inventors:

Kazuaki Ohkubo (13 out of 13 patents)

Tsutomu Mizuguchi (11 out of 11 patents)

Hisashi Shiraiwa (9 out of 9 patents)

4. Koichi Oka (9 out of 10 patents)

5. Kunikazu Taguchi (7 out of 7 patents)

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