IDiyas

For the Inventor, By the Inventor

Ota, Japan

Fumio Kumazawa

USPTO Granted Patents = 15

Average Co-Inventor Count = 1.6

ph-index = 1

Forward Citations = 4(Granted Patents)


Company Filing History:

goldMedal15 out of 3,591 
 
Semiconductor Components Industries, LLC
 patents

Years Active: 2017-2023

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15 patents (USPTO):Explore Patents
1. 11616459 - Drive methods for a three-phase motor (2023-03-28),
2. 11362605 - Drive methods for a three-phase motor (2022-06-14),
3. 10948891 - Motor driver with multipurpose pin (2021-03-16),
4. 10693397 - Three-phase brushless motor state identification (2020-06-23),
5. 10615722 - Controlling multiple facets of duty cycle response using a single motor integrated circuit pin (2020-04-07),
6. 10503134 - Motor driver with multipurpose pin (2019-12-10),
7. 10432118 - Identifying voltage to prevent motor integrated circuit damage (2019-10-01),
8. 10404194 - Motor driver with multipurpose pin (2019-09-03),
9. 10243490 - Controlling multiple facets of duty cycle response using a single motor integrated circuit pin (2019-03-26),
10. 10158308 - Identifying voltage to prevent motor integrated circuit damage (2018-12-18),
11. 10158306 - Three-phase brushless motor state identification (2018-12-18),
12. 10116244 - Motor driving circuit and method providing smooth recovery from transient power loss (2018-10-30),
13. 10084397 - Motor driver with multipurpose pin (2018-09-25),
14. 9887652 - Controlling lead angle using a single motor integrated circuit pin (2018-02-06),
15. 9837940 - Three-phase brushless motor state identification (2017-12-05),

Title: Fumio Kumazawa: Innovator in Motor Drive Technology

Introduction

Fumio Kumazawa is a prominent inventor based in Ota, Japan. He has made significant contributions to the field of motor drive technology, holding a total of 15 patents. His innovative approaches have advanced the efficiency and functionality of three-phase motors.

Latest Patents

One of Kumazawa's latest patents focuses on drive methods for a three-phase motor. This method involves energizing a first phase while driving a second phase using a sinusoidal drive function. The first phase is then switched to a non-energized state, allowing for the detection of back electromotive force (BEMF) voltage. During the time when the first phase is non-energized, the driving of the second phase is influenced by a second drive function, which may be non-sinusoidal, such as a cosine function. This innovative approach allows for modulation ratios to be adjusted based on the output of the second drive function, enhancing the motor's performance.

Career Highlights

Kumazawa is currently employed at Semiconductor Components Industries, LLC, where he continues to develop cutting-edge technologies. His work has been instrumental in improving the efficiency of motor drives, making significant impacts in various applications.

Collaborations

Throughout his career, Kumazawa has collaborated with notable colleagues, including Takashi Ogawa and Satoshi Yokoo. These partnerships have fostered a creative environment that encourages innovation and the sharing of ideas.

Conclusion

Fumio Kumazawa's contributions to motor drive technology exemplify the spirit of innovation. His patents and collaborative efforts continue to shape the future of motor efficiency and functionality.

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