Hideki Umehara

Title: The Innovations of Hideki Umehara

Introduction

Hideki Umehara is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of optical information recording, holding a total of 14 patents. His work has advanced the technology used in optical media, ensuring better performance and reliability.

Latest Patents

Among his latest patents is an optical information recording medium and composition for optical information recording film. This invention features a transparent substrate, a recording layer with an organic dyestuff, a reflective layer, and a protective layer. The optical information recording medium is characterized by the inclusion of a pit-edge control agent, which enhances the formation of recording pits. This innovation leads to improved deviation properties and jitter properties, resulting in a CD-R medium with a low error rate and excellent recording capabilities. Additionally, Umehara has developed a patent for dipyrromethene metal chelate compounds, which are used in optical recording media. This recording layer contains a dipyrromethene metal chelate compound derived from a specific dipyrromethene compound and a metal ion.

Career Highlights

Throughout his career, Umehara has worked with notable companies such as Mitsui Toatsu Chemicals, Incorporated and Yamamoto Chemicals, Inc. His experience in these organizations has contributed to his expertise in optical information technologies.

Collaborations

Umehara has collaborated with several professionals in his field, including Kenichi Sugimoto and Takeshi Tsuda. These partnerships have fostered innovation and development in optical recording technologies.

Conclusion

Hideki Umehara's contributions to optical information recording have significantly impacted the industry. His patents reflect a commitment to improving the performance and reliability of optical media. His work continues to influence advancements in this vital area of technology.