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Rohm Co., Ltd.

USPTO Granted Patents = 5,996

EPO Patents = 158

Trademarks = 47

Forward Citations = 36,802

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2,070 inventors (with patents filed for the assignee):

Yuki Nakano (146 out of 148 patents)

Masahiko Kobayakawa (105 out of 105 patents)

Kazutaka Shibata (78 out of 78 patents)

4. Masahide Tanaka (73 out of 154 patents)

5. Isao Yamamoto (67 out of 88 patents)

6. Hisayoshi Fujimoto (67 out of 67 patents)

7. Yukio Shakuda (62 out of 63 patents)

8. Goro Nakatani (59 out of 60 patents)

9. Takashi Nakamura (54 out of 63 patents)

10. Haruo Tanaka (49 out of 51 patents)

11. Ryota Nakamura (48 out of 48 patents)

12. Ken Nakahara (48 out of 53 patents)

13. Masatoshi Aketa (48 out of 49 patents)

14. Kenichi Fukumoto (47 out of 47 patents)

15. Kenichi Yoshimochi (46 out of 46 patents)

Core Competencies:

Light-Emitting Elements

Semiconductor Devices

Power Factor Correction

MEMS Technology

Silicon Carbide

Gas Sensors

Communication Systems

Motor Drive Circuits

Voltage Resistant Structures

LED Driving Devices

Temperature Detection Systems

Chip Parts

5,996 patents: Sort by Forward Citations

1. 12495592 - Semiconductor substrate, semiconductor device, and manufacturing methods of the same (2025-12-09),

2. 12494782 - Signal transmission device, electronic device, and vehicle (2025-12-09),

3. 12494712 - Control circuit, switched capacitor converter, and vehicle (2025-12-09),

4. 12490458 - Semiconductor device including overlapping electrodes (2025-12-02),

5. 12490457 - Semiconductor device including end insulating layer (2025-12-02),

6. 12490442 - Chip parts (2025-12-02),

7. 12490359 - Light-emitting element driving device, lighting device, and vehicle (2025-12-02),

8. 12489364 - Control device of power factor correction circuit, power factor correction circuit and power supply device (2025-12-02),

9. 12489090 - Semiconductor apparatus (2025-12-02),

10. 12489047 - Semiconductor device (2025-12-02),

11. 12487295 - Magnetism detection device (2025-12-02),

12. 12484285 - Semiconductor device and method for manufacturing the same (2025-11-25),

13. 12483241 - Semiconductor device (2025-11-25),

14. 12481303 - Current mode control type switching power supply device (2025-11-25),

15. 12477829 - Method for manufacturing semiconductor device and semiconductor device (2025-11-18),

Rohm Co., Ltd. is a Japanese electronic components manufacturer that develops and manufactures semiconductors, integrated circuits, and other electronic components. With a history dating back to 1958, the company has established a strong presence in the global market with a wide range of products for various industries including automotive, industrial, and consumer electronics. Rohm is known for its focus on innovation, quality, and customer satisfaction.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

5,996 Patents

#3 in Kyoto 615-0031

#40 in Japan

#132 in the World

Rohm Co., Ltd.

Forward Citations = 36,802

2,070 inventors:

Yuki Nakano (146 out of 148 patents)

Masahiko Kobayakawa (105 out of 105 patents)

Kazutaka Shibata (78 out of 78 patents)

4. Masahide Tanaka (73 out of 154 patents)

5. Isao Yamamoto (67 out of 88 patents)

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