Location History:
- Minami-ashigara, JA (1978)
- Kanagawa, JP (1984 - 2004)
- Minami-ashigara, JP (1984 - 2008)
Company Filing History:
34 out of 16,458 
1 out of 16,093 
Years Active: 1978-2008
Title: Shigeharu Urabe: A Pioneer in Inorganic Semiconductor Innovations
Introduction
Shigeharu Urabe, hailing from Kanagawa, Japan, is an esteemed inventor known for his remarkable contributions to the field of inorganic semiconductors and phosphors. With an impressive portfolio of 35 patents, Urabe has established himself as a pioneer in the development of technologies that enhance the performance of electronic devices.
Latest Patents
Among his notable inventions are two significant patents that showcase his expertise and innovation:
1. **Method of Producing Inorganic Semiconductor- or Phosphor-Primary Particle**
This patent details a method for producing inorganic semiconductor and phosphor primary particles. The technique involves reacting a precursor solution of inorganic primary particles in a water-major component solvent, under controlled pressure and temperature conditions ranging from 0.2 to 20 MPa and 120°C to 370°C, respectively.
2. **EL Phosphor Powder and EL Device**
In this patent, Urabe presents an electroluminescent (EL) phosphor powder, featuring phosphor particles with a zinc sulfide matrix. These particles contain both an activator and a co-activator, where at least 30% of the projected area has an aspect ratio of at least 1.5. This advancement ensures the EL phosphor powder emits light at a significantly higher brightness, thereby enhancing the efficiency of EL devices.
Career Highlights
Shigeharu Urabe has held key positions in renowned organizations, including Fuji Photo Film Company, Limited and Fujifilm Corporation. His work in these companies has been pivotal in advancing technologies related to semiconductor manufacturing and phosphor materials.
Collaborations
During his illustrious career, Urabe has collaborated with notable colleagues such as Yasunori Ichikawa and Hiroshi Ohnishi. These partnerships have further enriched his innovations and contributed to the development of cutting-edge technologies in the field.
Conclusion
Shigeharu Urabe's extensive experience and innovative approach have positioned him as a leading figure in the realm of inorganic semiconductors and phosphors. His work continues to influence advancements in electronics, showcasing the significant role of inventors in transforming modern technology.