Company Filing History:

7 out of 516

Toshiba Mitsubishi-Electric Industrial Systems Corporation

patents

6 out of 34

Navitime Japan Co., Ltd.

patents

3 out of 15,942

Mitsubishi Electric Corporation

patents

where one patent can have more than one assignee

Years Active: 2002-2021

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11205919 - Uninterruptible power supply system (2021-12-21),

2. 10630195 - Converter and power conversion device using same (2020-04-21),

3. 10389120 - Uninterruptible power supply device (2019-08-20),

4. 10263459 - Power supply system (2019-04-16),

5. 10116228 - Converter and power conversion device manufactured using the same (2018-10-30),

6. 10038392 - Inverter (2018-07-31),

7. 10033299 - Converter and power conversion device including the same (2018-07-24),

8. 7587273 - Route searching device, route searching method and program (2009-09-08),

9. 7539576 - Pedestrian navigation device, pedestrian navigation system, pedestrian navigation method and program (2009-05-26),

10. 7428461 - Walker navigation device, walker navigation method, and program (2008-09-23),

11. 7418338 - Road information provision server, road information provision system, road information provision method, route search server, route search system, and route search method (2008-08-26),

12. 7337062 - Walker navigation device and program (2008-02-26),

13. 6349261 - Method and apparatus for determining route within traffic network (2002-02-19),

Title: Keisuke Ohnishi: Innovator in Power Supply Systems

Introduction

Keisuke Ohnishi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of power supply systems, holding a total of 13 patents. His innovative designs focus on enhancing the efficiency and reliability of power conversion technologies.

Latest Patents

One of Ohnishi's latest patents is an uninterruptible power supply system. This system features a first converter for generating a DC voltage and a second converter for regenerating power, which are separately provided. The design includes DC buses connected to the second converter and a bidirectional chopper with bus bars. These bus bars are formed into a laminated bus bar, allowing for efficient power management. Additionally, the first and second semiconductor modules are mounted on the laminated bus bar and connected to the bus bars, creating an integrated converter unit. Another notable patent is a converter and power conversion device that utilizes wide bandgap semiconductors for improved performance. This converter includes various diodes and transistors, showcasing Ohnishi's commitment to advancing semiconductor technology.

Career Highlights

Throughout his career, Ohnishi has worked with notable companies such as Toshiba Mitsubishi-Electric Industrial Systems Corporation and Navitime Japan Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in power supply systems.

Collaborations

Ohnishi has collaborated with talented individuals in the field, including Shin Kikuchi and Takayuki Matsunaga. These partnerships have contributed to the successful development of his patented technologies.

Conclusion

Keisuke Ohnishi is a distinguished inventor whose work in power supply systems has made a significant impact on the industry. His innovative patents and collaborations reflect his dedication to advancing technology in this vital field.

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