Osaka, Japan

Hirotsugu Takegawa

This inventor holds 1 USPTO granted patent. Top assignee: Littelfuse Japan G.k.. Active years: 2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirotsugu Takegawa. Retrieved from https://idiyas.com/inventor/hirotsugu-takegawa

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 1

Forward Citations = 2(Granted Patents)


Company Filing History:


Years Active: 2019

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1 patent (USPTO):Explore Patents

Title: Innovator Spotlight: Hirotsugu Takegawa and His Protective Device Patent

Introduction: Hirotsugu Takegawa is a notable inventor based in Osaka, Japan, who has made significant contributions to the field of protective devices. With one patent to his name, Takegawa's invention showcases his expertise and innovation in creating solutions that enhance safety and efficiency in various applications.

Latest Patents: Takegawa's patent is a protective device designed to prevent overheating and electrical failures. This inventive solution comprises three key components: (i) a protection component equipped with a first thermal fuse and a resistive body, which generates heat when supplied with current during an abnormal state, activating the thermal fuse to cut off the current; (ii) a PTC (Positive Temperature Coefficient) component that plays a crucial role in tripping the system; and (iii) a second thermal fuse connected in series to the PTC component. When an abnormal condition is detected, the innovative configuration of these elements ensures that the protective device activates effectively, providing enhanced safety measures.

Career Highlights: Hirotsugu Takegawa is currently affiliated with Littelfuse Japan G.K., where he applies his expertise in electrical engineering and innovation. His role involves not only the development of safety devices but also ongoing research to improve existing technologies. Takegawa's dedication to his field is evident through his commitment to advancing protective solutions.

Collaborations: Throughout his career, Takegawa has worked closely with talented professionals, including Takayuki Yokota and Masaaki Iwai. These collaborations demonstrate the importance of teamwork in the innovation process, paving the way for new ideas and advancements in protective device technologies.

Conclusion: Hirotsugu Takegawa exemplifies the spirit of innovation within the engineering community. His patent for a protective device illustrates a significant advancement in safety technology. As he continues to collaborate with fellow engineers and develop new inventions, Takegawa's contributions are sure to have a lasting impact on the industry.

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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