Location History:
- Saitama, JP (1989 - 1999)
- Wako, JP (2010 - 2020)
Company Filing History:
8 out of 10,092 
3 out of 21,893 
Years Active: 1989-2020
Title: Tsunehisa Hata: Innovator in Structural Engineering
Introduction
Tsunehisa Hata is a prominent inventor based in Saitama, Japan. He has made significant contributions to the field of structural engineering, particularly in the automotive industry. With a total of 11 patents, Hata's work focuses on enhancing the strength and durability of vehicle components.
Latest Patents
Hata's latest patents include innovative designs for different materials joint structures. One notable patent describes a subframe structure that consists of a frame front part and a frame rear part, which are joined together in a vehicle's front-rear direction. The frame front part is designed to have a higher strength than the frame rear part, utilizing a galvannealed steel plate subjected to an electrodeposition coating. In contrast, the frame rear part is made of a hot-dip galvanized steel plate, also subjected to an electrodeposition coating. Additionally, a rear cross member made of aluminum die-casting is integrally joined with a rear cross panel of a hot-dip galvanized steel plate through friction stir welding.
Another significant patent focuses on a friction-stir welded structure that ensures corrosion resistance in peeling regions when a film coating is removed from a steel sheet. In this design, an aluminum alloy member is laid over a steel member that has been electropainted. The overlaid part is friction-stir welded at both inner and outer welds, enhancing the structural integrity of the sub-frame.
Career Highlights
Throughout his career, Tsunehisa Hata has worked with notable companies such as Honda Giken Kogyo Kabushiki Kaisha and Honda Motor Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in structural engineering.
Collaborations
Hata has collaborated with esteemed colleagues, including Tadayoshi Hayashi and Yoshikazu Fujisawa. Their combined expertise has contributed to the advancement of automotive technologies and structural designs.
Conclusion
Tsunehisa Hata's contributions to the field of structural engineering are noteworthy, particularly in the automotive sector. His innovative patents and collaborations with industry leaders highlight his commitment to enhancing vehicle safety and performance. Hata's work continues to influence the future of automotive engineering.