Location History:
- Machida, JP (1986 - 1988)
- Yokohama, JP (1988)
- Yamaguchi, JP (1999)
Company Filing History:
Years Active: 1986-1999
Title: Kuniyoshi Ueda: Innovator in Optical Fiber Technology
Introduction
Kuniyoshi Ueda is a prominent inventor based in Yamaguchi, Japan. He has made significant contributions to the field of optical fiber technology, holding a total of 4 patents. His work focuses on the development of advanced materials and processes that enhance the performance and reliability of optical fiber connectors.
Latest Patents
One of Ueda's latest patents is for an optical fiber connector part and the process for producing it. This innovative connector part features a ferrule with a capillary hole designed to hold an optical fiber. The ferrule is made from a zirconia-alumina composite oxide containing yttria, with a content ranging from 2 to 4 mol % in zirconia. The design includes a sleeve for connecting and holding the ferrule, which may also be formed from zirconia or a zirconia-alumina composite oxide. The production process utilizes granular zirconia-alumina composed of a particulate mixture with an average particle diameter of not more than 1 µm. This granular material is preferred for its excellent sintering characteristics, ensuring the ferrule maintains a stable spherical face at the tip and does not deform during long-term connections.
Another notable patent by Ueda is for a high-strength zirconia type sintered body. This sintered body consists of 50 to 98% by weight of zirconia containing 1.5 to 5 mole % of yttria and 50 to 2% by weight of alumina or other oxides. It boasts a three-point bending strength of at least 1700 MPa. The preparation process involves a hot isotactic pressing treatment or a monoaxially compression-sintering treatment, both conducted under specific temperature and pressure conditions.
Career Highlights
Throughout his career, Kuniyoshi Ueda has worked with notable companies such as Toyo Soda Manufacturing Co., Ltd. and Tosoh Corporation. His experience in these organizations has allowed him to refine his expertise in materials science and optical technologies.
Collaborations
Ueda has collaborated with esteemed colleagues, including Takaaki Tsukidate and Koji Tsukuma. These partnerships have contributed to the advancement of his research and the successful development of his patented technologies.
Conclusion
Kuniyoshi Ueda's innovative work in optical fiber technology has