Hirofumi Kako

USPTO Granted Patents = 29 (Patent Applications = 1)

Average Co-Inventor Count = 3.0

ph-index = 3

Forward Citations = 44(Granted Patents)

Location History:

Aichi-ken, JP (2014)
Chita-gun, JP (2014 - 2017)
Kariya, JP (2012 - 2023)

Company Filing History:

Toyota Jidosha Kabushiki Kaisha

patents

where one patent can have more than one assignee

Years Active: 2012-2023

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29 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11594942 - Control apparatus for rotating electric machine (2023-02-28),

2. 9590551 - Control apparatus for AC motor (2017-03-07),

3. 9374031 - AC motor control apparatus (2016-06-21),

4. 9276517 - Control device of AC motor (2016-03-01),

5. 9172322 - Control apparatus for AC motor (2015-10-27),

6. 9160267 - AC motor control apparatus (2015-10-13),

7. 9154071 - AC motor control apparatus (2015-10-06),

8. 9154070 - Controller for AC motor (2015-10-06),

9. 9154064 - Control device for AC motor (2015-10-06),

10. 9120388 - Rotating electrical machine drive system (2015-09-01),

11. 9106170 - Control device of AC motor (2015-08-11),

12. 9106163 - Control device of AC motor (2015-08-11),

13. 9093936 - Control apparatus for AC motor (2015-07-28),

14. 9077278 - AC motor control apparatus (2015-07-07),

15. 9077273 - Control device of AC motor (2015-07-07),

Title: Innovations of Hirofumi Kako: A Patented Journey in Electric Machine Control

Introduction: Hirofumi Kako, an accomplished inventor from Chita-gun, Japan, has made significant contributions to the field of electric machine technology. With a remarkable portfolio of 29 patents, Kako's inventions enhance control and efficiency in rotating electric machines and AC motors.

Latest Patents: Among his latest innovations is a control apparatus for rotating electric machines. This sophisticated device features a first and a second inverter, each connected to different ends of coils with multiple phases. The apparatus includes a controller with operation circuits for generating control signals, ensuring synchronized switching timings between the inverters. Another noteworthy patent is a control apparatus for a three-phase AC motor. This invention utilizes an inverter and a current sensor, as well as a responsive controller that discharges capacitors when necessary and generates precise voltage command values to enhance motor performance.

Career Highlights: Throughout his illustrious career, Hirofumi Kako has held positions at notable companies such as Denso Corporation and Toyota Jidosha Kabushiki Kaisha. His expertise in the automotive and electric sectors has enabled him to push the boundaries of innovation.

Collaborations: Kako has collaborated with talented individuals like Takeshi Itoh and Ryuji Omata, contributing to the development of groundbreaking technologies that redefine the standards of motor control systems.

Conclusion: Hirofumi Kako's innovative spirit and dedication to advancing electric machine technology have established him as a prominent figure in the field. His patents not only showcase his ingenuity but also contribute to the ongoing evolution of efficient and reliable electrical systems.

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