This inventor holds 3 USPTO granted patents. Top assignee: Nippon Steel Corporation. Active years: 1993-1997.
Location History:
- Tokyo, JP (1996)
- Kawasaki, JP (1993 - 1997)
Company Filing History:
Years Active: 1993-1997
Title: Innovations of Yoshio Ohzeki
Introduction
Yoshio Ohzeki is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of materials engineering, particularly in the production of fine metal components. With a total of 3 patents to his name, Ohzeki's work has had a considerable impact on manufacturing processes.
Latest Patents
One of his latest patents is a method of producing fine metal balls. This innovative technique allows for the efficient and accurate manufacturing of fine metal balls, such as solder. The process involves pouring a liquid into a vertically elongated cylindrical container, where it is heated to a temperature above the melting point of the metal in the upper regions while maintaining a lower temperature in the lower region. Metal pieces are then dropped into the container, where they melt and take on a spherical shape due to surface tension. As they reach the cooler region, they solidify into perfect metal balls. This method can be combined with a high-accuracy wire cutter to produce a large number of fine low-melting-point metal balls with high dimensional accuracy.
Another significant patent by Ohzeki is related to bonding wire for semiconductor elements. This invention involves a bonding wire that connects electrodes of a semiconductor element to outer leads. The bonding wire consists of copper with a composition of not less than 1 wt % but less than 5 wt %, with the balance being gold and incidental impurities. This design enhances both rupture strength and bonding strength, ensuring high reliability even when the diameter is reduced to about 10 micrometers.
Career Highlights
Yoshio Ohzeki is currently employed at Nippon Steel Corporation, where he continues to innovate and contribute to advancements in materials science. His work has been instrumental in improving manufacturing techniques and enhancing the performance of semiconductor components.
Collaborations
Ohzeki has collaborated with various professionals in his field, including his coworker Yasuhide Ohno. Their joint efforts have led to the development of innovative solutions that address industry challenges.
Conclusion
Yoshio Ohzeki's contributions to the field of materials engineering through his patents and innovations have significantly advanced manufacturing processes. His work continues to influence the industry, showcasing the importance of innovation in technology.