Tokyo, Japan

Michiaki Kumagai

This inventor holds 8 USPTO granted patents, plus 1 CIPO patent and 2 EPO patents. Top assignees: Yoshida Industries Co., Ltd., Yoshida Industry Co., Ltd., Japan Science and Technology Agency. Active years: 2001-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Michiaki Kumagai. Retrieved from https://idiyas.com/inventor/michiaki-kumagai

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


% Patents Active = 75.0


 

Average Co-Inventor Count = 3.1

ph-index = 3

Forward Citations = 59(Granted Patents)


Location History:

  • Saitama, JP (2015)
  • Tokyo, JP (2001 - 2022)

Company Filing History:


Years Active: 2001-2022

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8 patents (USPTO):Explore Patents

Title: Michiaki Kumagai: Innovator in Container Design

Introduction

Michiaki Kumagai is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of container design, holding a total of eight patents. His innovative approach has led to the development of practical solutions that enhance the functionality of everyday products.

Latest Patents

Among his latest patents is a "Container with Cap," which features a knock cam mechanism designed for simplicity and efficiency. This container allows for secure attachment and detachment of the cap, utilizing a unique structure that minimizes the number of parts involved. The cap includes a housing with grooves and ribs, facilitating the movement of a push-button plunger and a ratchet mechanism. Another notable patent is the "Cosmetic Container," which improves the opening and closing functions of a lid body. This design incorporates a single pivot shaft member and a compression coil spring, ensuring stability and ease of use.

Career Highlights

Michiaki Kumagai has worked with reputable companies such as Yoshida Industry Co., Ltd. and Yoshida Industries Co., Ltd. His experience in these organizations has contributed to his expertise in product design and innovation.

Collaborations

He has collaborated with talented individuals in the field, including Yukitomo Yuhara and Kiyokazu Miyokawa. These partnerships have fostered a creative environment that has led to the development of his innovative products.

Conclusion

Michiaki Kumagai's work exemplifies the spirit of innovation in container design. His patents reflect a commitment to enhancing user experience through practical and efficient solutions. His contributions continue 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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