Miyagi, Japan

Katsumi Kobori

This inventor holds 6 USPTO granted patents. Top assignee: Sony Corporation. Active years: 2000-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumi Kobori. Retrieved from https://idiyas.com/inventor/katsumi-kobori

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


% Patents Active = 50.0

Average Co-Inventor Count = 2.0

ph-index = 4

Forward Citations = 223(Granted Patents)


Company Filing History:


Years Active: 2000-2004

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6 patents (USPTO):Explore Patents

Title: The Innovative Mind of Katsumi Kobori: Pioneering Power Supply Solutions

Introduction: Katsumi Kobori is a renowned inventor based in Miyagi, Japan, who has made significant contributions to the field of power supply technology. With six patents to his name, Kobori's work has paved the way for advancements in the industry, demonstrating a commitment to innovation and efficiency.

Latest Patents: Among his latest inventions, the "Resonance Type Power Supply Unit" stands out. This power supply unit is designed to control power output effectively while providing overload protection in an economical manner with minimal energy loss. The unit achieves this by utilizing a rectifier circuit connected to an AC power source, which generates a DC output. This DC output is switched by a circuit to create an AC output supplied to a resonance circuit. A peak detection circuit ensures that output power remains constant by comparing the peak voltage of the resonance circuit with a set reference voltage.

Another notable patent by Kobori is the "Switching Power Source Device." This invention features a main rectifying and smoothing circuit alongside a secondary rectifying and smoothing circuit, which rectifies and smooths outputs from a transformer. The device employs an error detection circuit that monitors the outputs to control the switching operation through a PWM controlling circuit, maintaining the main output at a predetermined state. This innovation allows for efficient power management and voltage control.

Career Highlights: Kobori's impressive career includes his work at Sony Corporation, where he has developed cutting-edge technologies that enhance the efficiency and reliability of power supplies. With each patent, he advances the landscape of power management systems and sets new standards in the industry.

Collaborations: Throughout his career, Katsumi Kobori has collaborated with talented individuals such as Noritoshi Imamura and Wako Koshita. These partnerships have fostered an environment of innovation and creativity, leading to the successful development of his technologies and solutions.

Conclusion: Katsumi Kobori's contributions to power supply innovations exemplify the spirit of invention. His patents not only address current technological challenges but also establish a foundation for future explorations in the field. As a vital figure at Sony Corporation, Kobori continues to inspire with his inventive spirit and dedication to advancing power supply technology.

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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