Company Filing History:
8 out of 2,887 
4 out of 4 
1 out of 5,984 
Years Active: 1985-1990
Title: Toshiaki Hamaguchi: Innovator in High-Density Information Recording
Introduction
Toshiaki Hamaguchi is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of information recording technology, holding a total of 8 patents. His innovative work focuses on high-density information record mediums, which have applications in various electronic devices.
Latest Patents
Hamaguchi's latest patents include a high-density information record medium comprising a polymer material. This invention describes an information signal record medium of an electrostatic capacitance type, where signal information is recorded as geometric variations. The medium is constructed from a conductive resin composition that includes a vinyl chloride resin and 5 to 30 parts by weight of conductive particles based on 100 parts by weight of the vinyl chloride resin. Additionally, he has developed a high-density record that includes carbon black particles purified by electrolysis to remove impurities. This substrate is also made of vinyl chloride resin, enhancing the quality of the recorded information.
Career Highlights
Throughout his career, Toshiaki Hamaguchi has worked with notable companies such as Victor Company of Japan, Limited and Tokuyama Sekisui Industry Corporation, Limited. His experience in these organizations has allowed him to refine his skills and contribute to advancements in information recording technologies.
Collaborations
Hamaguchi has collaborated with several talented individuals in his field, including Kazuhira Namikawa and Mutsuaki Nakamura. These collaborations have fostered innovation and have led to the development of groundbreaking technologies in information recording.
Conclusion
Toshiaki Hamaguchi's contributions to high-density information recording technology have established him as a key figure in the field. His innovative patents and collaborations reflect his commitment to advancing technology and improving information storage solutions.