Company Filing History:
1 out of 36,771 
1 out of 1 Years Active: 1994
Title: Hirokazu Oonishi: Innovator in Aluminum Alloy Casting
Introduction
Hirokazu Oonishi is a notable inventor based in Toyota, Japan. He has made significant contributions to the field of materials science, particularly in aluminum alloy casting. His innovative work focuses on enhancing the strength and toughness of aluminum alloys, which are crucial for various industrial applications.
Latest Patents
Oonishi holds a patent for an aluminum alloy casting that boasts high strength and high toughness. The patent describes a production process for an aluminum alloy casting that includes specific amounts of silicon (Si), copper (Cu), and magnesium (Mg), with the balance being aluminum (Al). The alloy comprises silicon in an amount of 2.5 to 4.4% by weight, copper in an amount of 1.5 to 2.5% by weight, and magnesium in an amount of 0.2 to 0.5% by weight. The matrix of the alloy includes a dendrite with a size of 30 micrometers or less. This innovative approach improves toughness while enhancing strength through the careful addition of Cu and Mg. A solution treatment in the production process further enhances the strength of the aluminum alloy casting.
Career Highlights
Oonishi has had a distinguished career, working with prominent companies such as Toyota Motor Corporation and Toyota Central R&D Labs. His experience in these organizations has allowed him to develop and refine his expertise in materials engineering and innovation.
Collaborations
Some of his notable coworkers include Atsushi Ota and Minoru Uozumi, who have collaborated with him on various projects related to aluminum alloys and casting technologies.
Conclusion
Hirokazu Oonishi's contributions to aluminum alloy casting demonstrate his commitment to innovation and excellence in materials science. His patented work not only enhances the properties of aluminum alloys but also paves the way for advancements in various industrial applications.