Nobuo Ohkawai is a prominent inventor based in Shizuoka, Japan. He has made significant contributions to the field of arc tube manufacturing, holding a total of 10 patents. His innovative methods have advanced the technology used in discharge lamps, showcasing his expertise and dedication to the industry.

Latest Patents

Ohkawai's latest patents include a method of manufacturing an arc tube that features a light-emitting tube portion, along with first and second pinch seal portions formed on a quartz glass tube. This method involves cooling the light-emitting tube portion with liquid nitrogen while simultaneously heating and pinch-sealing the quartz glass tube. Another notable patent is for an arc tube for a discharge lamp unit, which details a primary pinch-sealing step for mounting an electrode assembly within a glass tube. This process ensures a hermetic seal, maintaining the vacuum inside the glass tube and enhancing the efficiency of the discharge lamp.

Career Highlights

Nobuo Ohkawai is associated with Koito Manufacturing Company, Ltd., where he has played a crucial role in developing innovative manufacturing techniques. His work has not only improved product quality but has also contributed to the company's reputation as a leader in the lighting industry.

Collaborations

Ohkawai has collaborated with notable coworkers such as Shinichi Irisawa and Yoshitaka Ohshima. Their combined expertise has fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Nobuo Ohkawai's contributions to arc tube manufacturing exemplify his commitment to innovation and excellence. His patents reflect a deep understanding of the technical challenges in the industry, and his work continues to influence the future of lighting technology.

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