Location History:
- Takatsuki, JP (1988 - 1989)
- Suita, JP (1981 - 1990)
Company Filing History:
7 out of 1,112 
1 out of 158 Years Active: 1981-1990
Title: Haruo Andoh: Innovator in Magnetic Recording Technology
Introduction
Haruo Andoh is a prominent inventor based in Suita, Japan, known for his significant contributions to the field of magnetic recording technology. With a total of 7 patents to his name, Andoh has made remarkable advancements that enhance the performance and efficiency of magnetic recording media.
Latest Patents
One of his latest patents involves a magnetic recording medium that features a first magnetic layer on a base and a second magnetic layer on top. The first magnetic layer contains magnetic particles with an average particle length of 0.4 to 0.7 micrometers, while the second layer contains particles with an average length of 0.25 to 0.35 micrometers. This innovative design achieves a coercive force ranging from 370 to 460 oersteds, with a specific ratio of coercive force between the two layers. This magnetic recording medium is noted for its excellent sensitivity and frequency characteristics across all frequency bands, producing less noise. Another significant patent focuses on cobalt-containing iron oxide magnetic particles, which exhibit a high coercive force and low surface electrical resistance. This invention is crucial for the development of recording elements in magnetic recording media.
Career Highlights
Throughout his career, Haruo Andoh has worked with notable companies such as Hitachi Maxell, Limited and Sakai Chemical Industry Co., Ltd. His work in these organizations has contributed to the advancement of magnetic recording technologies, solidifying his reputation as an expert in the field.
Collaborations
Andoh has collaborated with esteemed colleagues, including Susumu Kitaoka and Satoru Yamaguchi. Their joint efforts have further propelled innovations in magnetic recording technology.
Conclusion
Haruo Andoh's contributions to magnetic recording technology through his patents and collaborations have significantly impacted the industry. His innovative approaches continue to influence advancements in this vital field.