Company Filing History:
3 out of 36,499 
1 out of 1,100 Years Active: 1987-1995
Title: Souichi Hayashi: Innovator in Aluminum Alloy Technologies
Introduction
Souichi Hayashi is a notable inventor based in Nagoya, Japan, recognized for his contributions to the field of aluminum alloy technologies. With a total of three patents to his name, he has made significant advancements in materials that enhance the performance and durability of aluminum products.
Latest Patents
One of Hayashi's latest patents is focused on surface-treated aluminum or aluminum alloy materials. This innovation excels in adhesive properties, formability, weldability, phosphatability, paint adhesion, and post-painting corrosion resistance. The patent describes a coated layer containing zinc and iron or a combination of silicon oxides, aluminum oxides, and aluminum hydroxides, which is applied to the surface of aluminum or aluminum alloy bases. These materials are particularly useful in applications such as automotive panel materials, household electrical apparatus shells, and building materials.
Another significant patent by Hayashi involves an aluminum alloy valve lifter with a sprayed coating. This valve lifter comprises a body made of an Al-Si (5-20%) type alloy, featuring a silicon average grain diameter of 2 to 40 micrometers. The design includes a cylindrical portion and a disc portion, with an Fe-C type sprayed coating on the cylindrical portion that contains at least 0.1% carbon and has a hardness of 300 Hv or more. This innovation also incorporates a wear-resistant chip and an adjusting shim, enhancing the valve lifter's performance.
Career Highlights
Throughout his career, Souichi Hayashi has worked with prominent companies, including Toyota Motor Corporation and Kobe Steel, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in aluminum alloy technologies.
Collaborations
Hayashi has collaborated with notable colleagues such as Shigeki Shiraya and Takeshi Nakakobara, contributing to the advancement of their shared projects and innovations.
Conclusion
Souichi Hayashi's work in aluminum alloy technologies has led to significant advancements in material performance and application. His patents reflect a commitment to innovation and excellence in engineering, making him a key figure in the field.
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