Location History:
- Ibaraki, JP (2014)
- Tsukuba, JP (2015)
Company Filing History:
3 out of 6,894 
3 out of 1,714 
2 out of 1,285 
Years Active: 2014-2015
Title: Yuji Urabe: Innovator in Semiconductor Technology
Introduction
Yuji Urabe is a prominent inventor based in Tsukuba, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on innovative methods for producing semiconductor wafers and substrates.
Latest Patents
One of Yuji Urabe's latest patents is a method of producing a semiconductor wafer. This method includes forming a compound semiconductor layer on a base wafer through epitaxial growth. It also involves cleansing the surface of the compound semiconductor layer using a cleansing agent that contains a selenium compound. The patent specifies that examples of the selenium compound include selenium oxide, with HSeO being one of the examples. Additionally, the cleansing agent may contain substances such as water, ammonium, and ethanol. When the surface of the compound semiconductor layer is made of InGaAs, the insulating layer is preferably made of AlO, which is ideally formed by atomic layer deposition (ALD).
Another significant patent by Urabe involves a semiconductor substrate, field-effect transistor, integrated circuit, and method for fabricating a semiconductor substrate. This semiconductor substrate consists of a substrate, an insulating layer, and a semiconductor layer. The insulating layer is in contact with the substrate and includes at least one of an amorphous metal oxide and an amorphous metal nitride. The semiconductor layer is formed by crystal growth and is also in contact with the insulating layer.
Career Highlights
Yuji Urabe has worked with notable organizations, including Sumitomo Chemical Company, Limited and the National Institute of Advanced Industrial Science and Technology. His experience in these companies has contributed to his expertise in semiconductor technology.
Collaborations
Throughout his career, Yuji Urabe has collaborated with esteemed colleagues such as Masahiko Hata and Tetsuji Yasuda. These collaborations have further enriched his work and innovations in the semiconductor field.
Conclusion
Yuji Urabe is a distinguished inventor whose contributions to semiconductor technology have been recognized through his patents and collaborations. His innovative methods continue to influence the industry and pave the way for future advancements.