Company Filing History:
Years Active: 1978-1987
Title: The Innovations of Masatake Yoshikawa
Introduction
Masatake Yoshikawa is a notable inventor based in Hiratsuka, Japan. He has made significant contributions to the field of rare earth materials, holding two patents that showcase his innovative approaches to material recovery and phosphor technology.
Latest Patents
Yoshikawa's latest patents include a process for recovering highly pure rare earth oxides from waste rare earth phosphors. This process involves dissolving the waste material in a strong acid, followed by the addition of oxalic acid to precipitate rare earth oxalates. The precipitates are then washed and baked to obtain pure oxides. Another patent involves a divalent europium activated strontium beryllium chlorosilicate phosphor, which is represented by a specific chemical formula.
Career Highlights
Throughout his career, Yoshikawa has worked with prominent companies such as Kasei Optonix, Ltd. and Dai Nippon Toryo Co., Ltd. His work in these organizations has contributed to advancements in phosphor technology and material recovery processes.
Collaborations
Yoshikawa has collaborated with notable colleagues, including Masaru Naitou and Kinichiro Narita. These partnerships have fostered innovation and development in their respective fields.
Conclusion
Masatake Yoshikawa's contributions to the field of rare earth materials and phosphor technology highlight his role as a significant inventor. His patents reflect a commitment to advancing material recovery processes and enhancing phosphor applications.