Sho Maruyama

This inventor holds 8 USPTO granted patents, plus 1 CIPO patent and 2 EPO patents. Top assignees: Rohm Co., Ltd., Nissan Motor Company Limited, Calsonic Kansei Corporation. Active years: 2006-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sho Maruyama. Retrieved from https://idiyas.com/inventor/sho-maruyama

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 8

% Patents Active = 50.0

CIPO Patents = 1

EPO Patents = 2 (Patent Applications = 2)

Average Co-Inventor Count = 1.7

ph-index = 3

Forward Citations = 13(Granted Patents)

Location History:

Kyoto, JP (2006 - 2008)
Machida, JP (2013 - 2014)
Kanagawa, JP (2008 - 2020)

Company Filing History:

Nissan Motor Company Limited

patents

1 out of 560

Calsonic Kansei Corporation

patents

where one patent can have more than one assignee

Years Active: 2006-2020

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10739207 - Temperature abnormality detection method for power conversion apparatus, and temperature abnormality detection device for power conversion apparatus (2020-08-11),

2. 8760889 - Over-current detecting apparatus for switching element (2014-06-24),

3. 8513986 - Driving circuit for switching element and power converter (2013-08-20),

4. 7912103 - Semiconductor laser driving circuit, light emitting device, and disk drive (2011-03-22),

5. 7372884 - Semiconductor laser driving circuit, light emitting device, and disk drive (2008-05-13),

6. 7362189 - Oscillator circuit with regulated V-I output stage (2008-04-22),

7. 7205855 - Oscillator that oscillates signals of a predetermined frequency (2007-04-17),

8. 7057463 - Differential amplifier with improved frequency characteristic (2006-06-06),

Title: Innovations by Sho Maruyama

Introduction

Sho Maruyama is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of power conversion technology. With a total of 8 patents to his name, Maruyama's work focuses on enhancing the efficiency and safety of power conversion apparatuses.

Latest Patents

Maruyama's latest patents include a temperature abnormality detection method for power conversion apparatus and a temperature abnormality detection device for power conversion apparatus. The temperature abnormality detection method involves detecting the temperatures of a first power converter, a second power converter, and cooling water. It determines the presence of an abnormality in a preceding stage power converter based on the temperature difference between the first power converter and the cooling water. Additionally, it assesses the subsequent stage power converter by analyzing the temperature difference between the second power converter and an added temperature derived from the loss component of the preceding stage power converter. Another significant invention is the over-current detecting apparatus for a switching element, which includes a reference power source, a comparator circuit, and a current converting element. This apparatus effectively monitors the current flowing through the switching element and ensures operational safety.

Career Highlights

Throughout his career, Sho Maruyama has worked with prominent companies such as Rohm Co., Ltd. and Nissan Motor Company Limited. His experience in these organizations has allowed him to develop innovative solutions that address critical challenges in power conversion technology.

Collaborations

Maruyama has collaborated with notable colleagues, including Takeshi Wakii and Toshio Nishida. Their combined expertise has contributed to the advancement of technology in their respective fields.

Conclusion

Sho Maruyama's contributions to power conversion technology through his patents and collaborations highlight his role as an influential inventor. His innovative methods and devices continue to impact the industry positively.

Profile summary based on public USPTO records.