Osaka, Japan

Hiroaki Muroi

This inventor holds 6 USPTO granted patents. Top assignees: Matsushita Electric Works, Ltd., Asahi National Lighting Co., Ltd.. Active years: 1998-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroaki Muroi. Retrieved from https://idiyas.com/inventor/hiroaki-muroi

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


% Patents Active = 66.7

Average Co-Inventor Count = 2.7

ph-index = 3

Forward Citations = 31(Granted Patents)


Location History:

  • Osaka, JP (1998 - 2005)
  • Kitaku Osaka, JP (2005)

Company Filing History:


Years Active: 1998-2005

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6 patents (USPTO):Explore Patents

Title: The Innovative Mind of Hiroaki Muroi

Introduction

Hiroaki Muroi is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of technology, particularly in the development of time switches. With a total of 6 patents to his name, Muroi's inventions reflect his dedication to enhancing user convenience and functionality.

Latest Patents

One of Muroi's latest patents is a time switch that features a unique time setting method. This method utilizes a sub-dial that can be rotated both clockwise and counter-clockwise. The design includes a gearwheel set that conveys motor torque to the dial. It consists of a ninth drive gear and a ninth shank gear connected to a step shaft. The ninth drive gear rotates within a circular depression that has multiple ratchet teeth at uniform intervals. The ratchet mechanism engages when the motor's torque is sufficient to drive the dial, but it slips when the dial's torque exceeds that of the motor. Another innovative time switch patent also employs a ratchet device with multiple teeth and pawls that engage to ensure smooth operation under varying torque conditions. A control knob attached to the cam shaft allows users to easily set the contact points to on or off positions.

Career Highlights

Throughout his career, Muroi has worked with prominent companies such as Matsushita Electric Works, Ltd. and Asahi National Lighting Co., Ltd. His experience in these organizations has undoubtedly contributed to his inventive prowess and understanding of market needs.

Collaborations

Muroi has collaborated with talented individuals in the field, including Kazuo Yanagida and Takayuki Todokoro. These partnerships have likely fostered a creative environment that encourages innovation and the sharing of ideas.

Conclusion

Hiroaki Muroi's contributions to the field of technology, particularly through his innovative time switch designs, showcase his expertise and commitment to improving user experience. His work continues to influence the industry and inspire future inventors.

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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