This inventor holds 1 USPTO granted patent. Top assignees: Dowa Engineering Co., Ltd., Dowa Mining Co., Ltd.. Active years: 1979.
Company Filing History:
1 out of 2 
1 out of 217 Years Active: 1979
Title: Hiroshi Nagino: Innovator in Tunnel Construction
Introduction
Hiroshi Nagino is a notable inventor from Okayama, Japan, recognized for his innovative contributions to tunnel construction. His work has significantly impacted the engineering field, particularly in the design and construction of rectangularly shaped tunnels.
Latest Patents
Hiroshi Nagino holds a patent for a "Method for constructing a rectangularly shaped tunnel." This method involves creating an artificial roof, side wall pillars, a center wall pillar, and floor portions that extend along the length of the tunnel. The construction process includes sequentially excavating cross-cut shafts and plugging the cavities with concrete. The design ensures structural integrity and efficiency in tunnel construction.
Career Highlights
Throughout his career, Hiroshi Nagino has worked with prominent companies such as Dowa Mining Co., Ltd. and Dowa Engineering Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to significant projects in the field of engineering.
Collaborations
Hiroshi has collaborated with notable coworkers, including Toshiya Ogasawara and Norimasa Kubo. Their teamwork has fostered innovation and advancement in tunnel construction techniques.
Conclusion
Hiroshi Nagino's contributions to the field of tunnel construction through his patented methods and collaborations with industry professionals highlight his importance as an inventor. His work continues to influence engineering practices today.