Company Filing History:
1 out of 240 
1 out of 57 Years Active: 1995
Title: Seiichi Hirao: Innovator in Magnetic Head Slider Materials
Introduction
Seiichi Hirao is a notable inventor based in Amagasaki, Japan. He has made significant contributions to the field of materials science, particularly in the development of magnetic head slider materials. His innovative work has led to advancements in precision machining and material efficiency.
Latest Patents
Hirao holds a patent for a magnetic head slider material. This material consists essentially of 0.1 to 20.0 vol % of at least one of the oxides from the group Va elements of the International Periodic Table (Ta, Nb, V) and 80.0 to 99.9 vol % of stabilized cubic ZrO₂ containing a stabilizer (Y₂O₃, MgO, CeO₂). The invention boasts improved precision machinability, machining efficiency, high strength, a densified structure, and enhanced affinity with the recording medium or lubricity, alongside wear resistance. It can be machined precisely into a thin film magnetic head slider with a reduced amount of chipping.
Career Highlights
Throughout his career, Hirao has worked with prominent companies such as Sumitomo Special Metals Co., Ltd. and Nippon Tungsten Co., Ltd. His experience in these organizations has contributed to his expertise in material development and innovation.
Collaborations
Hirao has collaborated with notable coworkers, including Toshiaki Wada and Toyoshige Sasaki. Their joint efforts have furthered advancements in the field of magnetic materials.
Conclusion
Seiichi Hirao's contributions to the development of magnetic head slider materials highlight his innovative spirit and dedication to advancing technology. His work continues to influence the field of materials science and precision engineering.