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For the Inventor, By the Inventor

Kyoto, Japan

Koji Nishikawa

This inventor holds 7 USPTO granted patents. Top assignee: Rohm Co., Ltd.. Active years: 2005-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koji Nishikawa. Retrieved from https://idiyas.com/inventor/koji-nishikawa-32x80cn7

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

Calculating rank
USPTO Granted Patents = 7

% Patents Active = 28.6

Average Co-Inventor Count = 1.4

ph-index = 2

Forward Citations = 7(Granted Patents)


Company Filing History:

goldMedal7 out of 6,021 
 
Rohm Co., Ltd.
 patents

Years Active: 2005-2012

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7 patents (USPTO):Explore Patents
1. 8324875 - Multiphase DC/DC converter with output phases deviated from or aligned with each other and driven with fixed on time (2012-12-04),
2. 7791989 - Arithmetic processing circuit unit and disc device (2010-09-07),
3. 7535816 - Waveform equalizer and information reproducing apparatus therewith (2009-05-19),
4. 7406018 - Signal generating circuit and optical pickup device provided therewith (2008-07-29),
5. 7365588 - Automatic time constant adjustment circuit (2008-04-29),
6. 6998802 - Motor rotation rate detecting circuit and motor driving device (2006-02-14),
7. 6841959 - Motor rotation rate detecting circuit and motor driving device (2005-01-11),

Title: Koji Nishikawa: Innovator in DC/DC Converter Technology

Introduction

Koji Nishikawa is a prominent inventor based in Kyoto, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of advanced DC/DC converter technologies. With a total of 7 patents to his name, Nishikawa continues to push the boundaries of innovation in his field.

Latest Patents

Nishikawa's latest patents include a multiphase DC/DC converter that features output phases that can be either deviated from or aligned with each other, driven with a fixed on time. This innovative design incorporates a plurality of DC/DC converters whose outputs are connected to supply electric power to a load. The system includes a load state detection portion that monitors the load's condition and a control circuit that manages the operation of the converters based on the detected load state.

Another notable patent involves an arithmetic processing circuit unit and disc device. This invention utilizes differential signals inputted to transistors to perform addition operations on four differential signals. The design also includes a filtering operation facilitated by capacitors and resistors, ensuring that any offset from the addition operation is effectively removed.

Career Highlights

Koji Nishikawa is currently employed at Rohm Co., Ltd., a company known for its commitment to innovation in semiconductor technology. His work at Rohm has allowed him to develop cutting-edge solutions that enhance the efficiency and performance of electronic devices.

Collaborations

Throughout his career, Nishikawa has collaborated with talented individuals such as Tomoyuki Miki and Keisuke Kadowaki. These partnerships have fostered a creative environment that has led to the successful development of various technologies.

Conclusion

Koji Nishikawa is a distinguished inventor whose work in DC/DC converter technology has made a significant impact in the field of electrical engineering. His innovative patents and collaborations highlight his dedication to advancing technology and improving electronic systems.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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