Company Filing History:
1 out of 87 
1 out of 499 Years Active: 1993
Title: Kitaro Shigeta: Innovator in Phosphor Technology
Introduction
Kitaro Shigeta is a notable inventor based in Fujisawa, Japan. He is recognized for his contributions to the field of phosphor technology, particularly through his innovative patent related to calcium tungstate phosphor.
Latest Patents
Shigeta holds a patent for a "Process for producing calcium tungstate phosphor." This invention involves a calcium tungstate phosphor that comprises calcium tungstate as a host and vanadium. The proportion of vanadium to calcium tungstate is maintained within a range of 0.01 to 30 ppm. The phosphor is produced by forming a solid calcium tungstate precipitate from an aqueous medium containing ammonia, calcium ion, tungstate ion, and vanadate ion, followed by firing the precipitate in the presence of fluxing material.
Career Highlights
Throughout his career, Kitaro Shigeta has worked with prominent companies such as Kasei Optonix, Ltd. and Mitsubishi Kasei Corporation. His work in these organizations has significantly contributed to advancements in phosphor technology.
Collaborations
Shigeta has collaborated with notable individuals in his field, including Hideo Suzuki and Etsuo Shimizu. These collaborations have further enhanced his innovative efforts in phosphor production.
Conclusion
Kitaro Shigeta's work in the development of calcium tungstate phosphor showcases his innovative spirit and dedication to advancing technology in this specialized field. His contributions continue to influence the industry and inspire future innovations.