Company Filing History:
Years Active: 1998-2005
Title: Masaru Ishijima: Innovator in Magnetic Disk Technology
Introduction
Masaru Ishijima is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of magnetic disk technology, holding a total of 2 patents. His work has been instrumental in advancing the efficiency and reliability of data storage devices.
Latest Patents
Ishijima's latest patents include a "Servo Data Writing Device" and a "Method and Apparatus for Electrical Test of Wiring Patterns Formed on a Print-Circuit Board." The servo writing device is designed to write servo data in each sector of a magnetic disk, ensuring that the recorded positions of the tracks are accurately aligned. This device features a clock head for generating reference clock signals and a standard clock generating circuit that operates at a higher frequency. The second patent focuses on testing the electrical integrity of wiring patterns on printed circuit boards, utilizing a method to measure capacitance and identify defects in wiring.
Career Highlights
Throughout his career, Ishijima has worked with prominent companies such as Fujitsu Automation Limited and Fujitsu Corporation. His experience in these organizations has allowed him to refine his skills and contribute to innovative projects in the technology sector.
Collaborations
Ishijima has collaborated with notable colleagues, including Morishiro Sudo and Kazuo Yamazaki. Their combined expertise has fostered advancements in their respective fields.
Conclusion
Masaru Ishijima's contributions to magnetic disk technology and electrical testing methods highlight his role as a significant inventor. His patents reflect a commitment to innovation and excellence in technology.