Location History:
- Tokyo, JP (1999 - 2002)
- Machida, JP (1998 - 2003)
- Fujisawa, JP (1988 - 2007)
- Kanagawa, JP (1991 - 2012)
- Yokohama, JP (1999 - 2012)
Company Filing History:
18 out of 28,577 
4 out of 355 
4 out of 2,433 
Years Active: 1988-2012
Title: The Innovative Contributions of Yoshitaka Hayashi
Introduction
Yoshitaka Hayashi is a prominent inventor based in Yokohama, Japan, renowned for his significant contributions to the field of optical recording technology. With an impressive portfolio of 28 patents, Hayashi has dedicated his career to advancing the capabilities of optical media, making strides in both functionality and efficiency.
Latest Patents
Among his latest innovations are groundbreaking patents focusing on optical recording mediums and sputtering targets. One of his notable inventions is an optical recording medium that consists of a substrate and a recording layer over it, primarily composed of bismuth (Bi) and oxygen (O). This recording layer is supplemented with boron (B) and a selection of elements including germanium (Ge), lithium (Li), tin (Sn), copper (Cu), iron (Fe), palladium (Pd), zinc (Zn), magnesium (Mg), neodymium (Nd), manganese (Mn), and nickel (Ni). Another significant patent from Hayashi is a write-once-read-many optical recording medium designed to achieve a reflectivity of 35% or less when a laser beam is applied to it. This invention includes a substrate, a recording layer comprising bismuth or its oxide, an overcoat layer, and a reflective layer following the laser beam incident plane.
Career Highlights
Yoshitaka Hayashi has had a rich career, holding positions in esteemed organizations such as Ricoh Company, Ltd. and Nippon Seiko Kabushiki Kaisha. His work in these companies has enabled him to play a pivotal role in the development of advanced optical technologies, further establishing his reputation as an influential inventor in the industry.
Collaborations
Throughout his career, Hayashi has collaborated with notable colleagues, including Toshishige Fujii and Noboru Sasa. These partnerships have enhanced his research and innovation efforts, allowing him to push the boundaries of optical media technology and introduce transformative solutions in the market.
Conclusion
In summary, Yoshitaka Hayashi's innovative contributions to optical recording mediums exemplify his expertise and dedication to advancements in technology. With 28 patents to his name, he continues to be a key figure in the field, and his inventions not only enhance the functionality of optical media but also demonstrate the potential for future innovations in this domain.