Company Filing History:
2 out of 10,092 
2 out of 14 Years Active: 1995-2005
Title: Sadao Shiraishi: Innovator in Aluminum Surface Treatment
Introduction
Sadao Shiraishi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of aluminum surface treatment, holding 2 patents that showcase his innovative methods. His work focuses on enhancing the properties of aluminum alloys, particularly in high-temperature applications.
Latest Patents
One of Shiraishi's latest patents is a method for surface treatment of aluminum alloy high-temperature processed articles. This method involves heating the surface of an aluminum alloy containing magnesium at a high temperature of 200°C or above. Following this, the surface is etched with an aqueous solution containing a chelating agent. The process is completed with at least one surface treatment selected from hydration oxidation treatment, coating type chromating, coating, anodizing, and alternating current electrolysis in an aqueous alkali solution. This innovative approach provides a surface-treated aluminum alloy with superior anticorrosion properties, enhanced adhesion of coatings, and an aesthetically pleasing surface appearance.
Another significant patent by Shiraishi is for a surface-treated aluminum material and the method for its surface treatment. In this method, an aluminum material is treated with an aqueous solution containing a minimum concentration of 0.005 mol/liter of a chelating agent and 5 g/liter or more of an organic amine. The solution also maintains low levels of phosphoric and sulfuric acid radical ions. This treatment results in a specific color tone on the surface, enhancing the material's overall quality.
Career Highlights
Throughout his career, Sadao Shiraishi has worked with prominent companies such as Honda Giken Kogyo Kabushiki Kaisha and Sky Aluminium Co., Ltd. His experience in these organizations has allowed him to refine his expertise in aluminum processing and surface treatment technologies.
Collaborations
Shiraishi has collaborated with notable colleagues, including Shiro Kamiyama and Masanori Kosugi. These partnerships have contributed to the advancement of his research and the successful development of his patented methods.
Conclusion
Sadao Shiraishi's innovative work in aluminum surface treatment has made a significant impact in the field. His patents reflect a commitment to improving material properties and enhancing the performance of aluminum alloys in various applications.