Kawasaki, Japan

Keiji Kuroiwa

This inventor holds 1 USPTO granted patent. Top assignee: Fujitsu Corporation. Active years: 1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiji Kuroiwa. Retrieved from https://idiyas.com/inventor/keiji-kuroiwa

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


% Patents Active = 100.0

Average Co-Inventor Count = 9.0

ph-index = 1

Forward Citations = 28(Granted Patents)


Company Filing History:


Years Active: 1997

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1 patent (USPTO):Explore Patents

Title: Keiji Kuroiwa: Innovator in Ultraviolet Exposure Technology

Introduction

Keiji Kuroiwa is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of ultraviolet exposure technology. His innovative approach has led to the development of a unique patent that addresses challenges in maintaining lens surfaces in ultraviolet exposure apparatuses.

Latest Patents

Kuroiwa holds a patent titled "UV exposure with elongated service lifetime." This invention focuses on reducing the accumulation of substances on the lens surface of ultraviolet exposure apparatuses. By forming openings in the wall of a lens barrel, the atmosphere can be replaced with a proper gas, such as nitrogen or clean air. This innovative solution enhances the longevity and efficiency of the equipment.

Career Highlights

Keiji Kuroiwa is associated with Fujitsu Corporation, where he has been able to apply his expertise in developing advanced technologies. His work has been instrumental in improving the performance of ultraviolet exposure systems, which are critical in various industrial applications.

Collaborations

Kuroiwa has collaborated with esteemed colleagues, including Tadahiro Hayashi and Nobuo Fujie. Their combined efforts have contributed to the advancement of technologies in their field.

Conclusion

Keiji Kuroiwa's contributions to ultraviolet exposure technology exemplify the impact of innovative thinking in engineering. His patent not only addresses practical challenges but also enhances the efficiency of ultraviolet exposure systems. His work continues to influence the industry positively.

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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