Nobuaki Isono

Title: Nobuaki Isono and His Connection-Terminal Invention.

Introduction

Nobuaki Isono is an inventor associated with Shimonoseki, Japan. His patent work addresses the design of electrical connection terminals, with a focus on reducing insertion force while maintaining stable contact resistance.

Latest Patents

Isono is associated with 1 patent, titled “Fitting-Type Connection Terminal.” The invention describes male and female terminals with tin-film coatings of different thicknesses. By reducing the tin-film thickness on one terminal, the hardness of the underlying copper or copper-alloy base material has a greater influence on the terminal’s apparent hardness. This helps suppress adhesion between the tin films and reduce the force needed to insert the terminals.

The patent reports that, compared with a reference configuration using 1.0-micrometer tin films on both terminals, the insertion force can be reduced by more than 10 percent. In a specified configuration—with a 0.1-micrometer tin film on the male terminal and a 0.3-to-1.0-micrometer film on the female terminal—the reduction can exceed 30 percent, while stable contact resistance is maintained.

Career Highlights

The available information identifies Isono’s work through this patent and lists his location as Shimonoseki, Japan. No company affiliation is provided.

Collaborations

Yasuhiro Shintani and Masahiro Kawaguchi are listed as Isono’s coworkers. The available information does not specify their roles in the patent.

Conclusion

Nobuaki Isono’s patented terminal design uses tin-film thickness to reduce insertion force while preserving stable electrical contact, highlighting a practical innovation in connector engineering.