Company Filing History:
Years Active: 2000-2011
Title: The Innovations of Hirohisa Ishihara
Introduction
Hirohisa Ishihara is a notable inventor based in Niigata-ken, Japan. He has made significant contributions to the field of magnetic head devices, holding a total of 11 patents. His work has advanced the technology used in magnetic recording and playback systems.
Latest Patents
Ishihara's latest patents include a magnetic head device that features a rear positive pressure surface and a rear side positive pressure surface. This innovative design allows for a slider that faces a recording medium, exerting a first positive pressure on the leading side and a second positive pressure on the trailing side. The unique configuration creates a small second negative pressure in the middle area and a larger first negative pressure at the rear, stabilizing the pitch angle of the slider and preventing excessive decreases in the flying distance of the trailing end portion. Another significant patent is for a magnetic head apparatus that includes a magnetic head slider with specific area ratios designed to achieve a stable levitation attitude while minimizing damage to the magnetic element within the slider.
Career Highlights
Throughout his career, Ishihara has worked with prominent companies such as Alps Electric Co., Ltd. and TDK Corporation. His experience in these organizations has allowed him to refine his expertise in magnetic technologies and contribute to various innovative projects.
Collaborations
Ishihara has collaborated with notable colleagues, including Tomoo Otsuka and Junsei Ueda. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in the field.
Conclusion
Hirohisa Ishihara's contributions to the field of magnetic head devices have significantly impacted the technology used in data storage and retrieval. His innovative patents and collaborations highlight his dedication to advancing this essential area of technology.