Company Filing History:
2 out of 36,771 
1 out of 58 
1 out of 2 Years Active: 1999
Title: Hirokazu Shirakawa: Innovator in Metal Treatment and Casting Processes
Introduction
Hirokazu Shirakawa is a notable inventor based in Toyota, Japan. He has made significant contributions to the fields of metal treatment and casting processes. With a total of 2 patents, his work reflects a commitment to innovation and efficiency in industrial applications.
Latest Patents
Shirakawa's latest patents include a method of treating dusts containing oxides and a casting method with an improved resin core removing step. The first patent describes a process where dusts containing zinc and/or lead in the form of oxides are mixed with reducing agents and heated in a vacuum. This method effectively reduces the oxides to pure metals, which are then condensed and retrieved. The second patent addresses the challenge of residual molten resin in cast products. It introduces a resin core that remains stable under high temperatures and pressures until it is softened, allowing for easy removal without breaking apart.
Career Highlights
Throughout his career, Shirakawa has worked with prominent companies such as Toyota Motor Corporation and Aichi Steel Works, Ltd. His experience in these organizations has allowed him to develop and refine his innovative techniques in metal processing.
Collaborations
Shirakawa has collaborated with notable colleagues, including Yuji Okada and Masamichi Okada. Their combined expertise has contributed to advancements in their respective fields.
Conclusion
Hirokazu Shirakawa's contributions to metal treatment and casting processes demonstrate his innovative spirit and dedication to improving industrial practices. His patents reflect a deep understanding of material properties and processing techniques, making him a valuable figure in the field of engineering.