Company Filing History:
1 out of 3,563 
1 out of 3 Years Active: 1987
Title: Takayoshi Isa: Innovator of the Prefastenable Torque-Shear Bolt
Introduction
Takayoshi Isa, an inventive mind from Kitakyushu, Japan, has made a mark in the engineering world with his innovative creation of a prefastenable torque-shear bolt. With a keen eye for detail and a deep understanding of mechanical design, Isa has contributed to advancements that enhance the functionality and reliability of fastening technologies.
Latest Patents
Takayoshi Isa holds a patent for the prefastenable torque-shear bolt, which features a unique design aimed at improving the fastening process. The bolt is meticulously crafted with a threaded portion that engages a nut, while both full-fastening and prefastening grips boast wrench-engaging surfaces. A notable aspect of this invention is the tapered design of the transition portions that lead to break-off grooves. This innovative design ensures a reliable fastening mechanism where the effective area of the fracture surface of the prefastening break-off groove is smaller than that of the full-fastening break-off groove.
Career Highlights
Throughout his career, Takayoshi Isa has worked with esteemed organizations such as Nippon Steel Corporation and Nippon Steel Bolten Co., Ltd. His experience in these leading companies has allowed him to refine his engineering skills and gain valuable insights into materials and manufacturing processes, contributing to the innovative designs he has developed.
Collaborations
Isa's work has also been defined by collaborations with notable colleagues, including Nobuyoshi Uno and Eijiro Kurata. These partnerships have fostered an environment of creativity and ingenuity, facilitating the exchange of ideas that drive innovation forward.
Conclusion
Takayoshi Isa's contributions to the field of engineering, particularly through his patent of the prefastenable torque-shear bolt, exemplify the spirit of innovation. His dedication to creating reliable and efficient fastening solutions serves as an inspiration for future inventors and engineers alike in the realm of mechanical design.