Sagamihara, Japan

Hironobu Kawai

This inventor holds 2 USPTO granted patents. Top assignee: Hochiki Kabushiki Kaisha. Active years: 1989-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hironobu Kawai. Retrieved from https://idiyas.com/inventor/hironobu-kawai

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 = 2.7

ph-index = 2

Forward Citations = 48(Granted Patents)


Company Filing History:


Years Active: 1989-1990

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2 patents (USPTO):Explore Patents

Title: Hironobu Kawai: Innovator in Smoke Detection Technology

Introduction

Hironobu Kawai is a notable inventor based in Sagamihara, Japan. He has made significant contributions to the field of smoke detection technology, holding a total of 2 patents. His innovative designs focus on enhancing the efficiency and reliability of smoke detectors.

Latest Patents

Kawai's latest patents include a "Scattered-light smoke detector with a shielding structure of detector." This invention features an improved shield structure that enhances the smoke detection process. The design incorporates a printed circuit board positioned at the upper portion of the smoke detecting section, which includes a planar base and a surrounding wall. This wall allows smoke to enter while defining a smoke detecting space. The arrangement of a light emitting element and a photodetector element ensures that the photodetector can receive light scattered by smoke entering the space.

Another significant patent is the "Photoelectric smoke detector with permanently fixed insect net." This invention comprises a smoke-detection arrangement that includes a light emitting element and a photodetecting element. The smoke-detecting unit is designed to allow smoke to enter while preventing external light interference. An insect net is integrated into the design, ensuring that the smoke detector remains effective while being protected from insects.

Career Highlights

Hironobu Kawai is associated with Hochiki Corporation, a company known for its advanced fire detection and alarm systems. His work at Hochiki has allowed him to focus on developing innovative smoke detection technologies that enhance safety in various environments.

Collaborations

Kawai has collaborated with notable colleagues such as Hiroshi Sawa and Atsushi Miyabe. Their combined expertise has contributed to the advancement of smoke detection technologies.

Conclusion

Hironobu Kawai's contributions to smoke detection technology through his patents demonstrate his commitment to innovation and safety. His work continues to influence the industry and improve fire safety measures.

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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