Location History:
- Tokyo, JP (1990)
- Chiba, JP (1994 - 1999)
Company Filing History:
5 out of 1,379 
1 out of 72 
1 out of 1,788 Years Active: 1990-1999
Title: The Innovations of Tomoyoshi Sasakawa
Introduction
Tomoyoshi Sasakawa is a notable inventor based in Chiba, Japan. He has made significant contributions to the field of optical recording mediums, holding a total of 6 patents. His work focuses on enhancing the performance and reliability of optical recording technologies.
Latest Patents
Sasakawa's latest patents include innovative designs for optical recording mediums. One of his patents describes an optical recording medium that consists of a recording layer, a light interference layer, a reflective layer, and a protective layer, all laminated on a substrate. This design is characterized by the inclusion of at least one organic dye in both the recording and light interference layers, along with a light absorbent and/or a thermal decomposition promoter. This configuration allows for excellent compatibility with lasers of different wavelength ranges, resulting in superior recording properties.
Another significant patent details an optical recording medium that features a substrate with a recording layer that does not extend to the inner and outer peripheral portions. This design includes a metal reflective layer that aligns with the recording layer's inner periphery while extending beyond its outer edge. The protective layer fully covers the reflective layer, ensuring excellent adhesion strength even under high humidity and temperature conditions. This innovation has proven effective in maintaining the integrity of the protective layer during tape peeling tests.
Career Highlights
Throughout his career, Tomoyoshi Sasakawa has worked with prominent companies such as Mitsui Toatsu Chemicals and Yamamoto Chemicals. His experience in these organizations has contributed to his expertise in the development of advanced optical technologies.
Collaborations
Sasakawa has collaborated with notable colleagues, including Sumio Hirose and Tadahiko Mizukuki. Their combined efforts have furthered advancements in the field of optical recording mediums.
Conclusion
Tomoyoshi Sasakawa's contributions to optical recording technology are significant and impactful. His innovative patents and collaborations highlight his dedication to advancing this field. His work continues to influence the development of reliable and efficient optical recording mediums.