This inventor holds 1 USPTO granted patent and 1 published patent application, plus 1 CIPO patent. Top assignee: Fdk Corporation. Active years: 2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2026
Title: Kazuhiro Hiwatashi: Power Supply Device Inventor
Introduction
Kazuhiro Hiwatashi is an inventor based in Tokyo, Japan, associated with FDK Corporation. His work includes a patented power supply device designed to manage battery charging and provide power to a load when an external power supply’s voltage drops.
Latest Patents
Hiwatashi is credited with 1 patent, titled “Power Supply Device.” The invention combines a battery pack, a step-up/down circuit, charging and discharging circuits, and a control circuit. Its discharge circuit uses two series-connected switches: one controlled by the control circuit and another that responds directly to the external power supply’s voltage. This arrangement enables the device to detect a voltage drop and discharge the battery to a connected load.
Career Highlights
Hiwatashi’s patent reflects work on power management systems that coordinate battery charging and backup discharge. The disclosed design aims to maintain power to a load when the external supply’s voltage falls.
Collaborations
Kiyotaka Kumamoto and Yosuke Saito are identified as Hiwatashi’s coworkers. The available information does not specify their roles in developing or patenting the power supply device.
Conclusion
Kazuhiro Hiwatashi’s patent documents a battery-based power supply design that combines controlled charging with voltage-responsive backup discharge.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile