Location History:
- Kanagawa, JP (1994 - 2003)
- Kawasaki, JP (2004 - 2007)
Company Filing History:
4 out of 1,960 
2 out of 19,748 
2 out of 36,721 
Years Active: 1994-2025
Title: Yutaka Ohnishi: Innovator in Optical Semiconductor Technology
Introduction
Yutaka Ohnishi is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of optical semiconductors, holding a total of seven patents. His work focuses on advancing semiconductor technology through innovative designs and applications.
Latest Patents
Ohnishi's latest patents include an optical semiconductor device that features an active layer with multiple quantum dot layers. This device incorporates a first quantum dot layer doped with a p-type impurity and a second quantum dot layer doped with an n-type impurity, which emits light at a different wavelength than the first layer. Another notable patent is for a semiconductor device that consists of a quantum dot group, which includes a stack of quantum dot layers with varying central wavelengths. This design allows for enhanced performance by ensuring that the central wavelengths shift sequentially along the stacking direction.
Career Highlights
Throughout his career, Ohnishi has worked with notable companies such as Showa Denko K.K. and Denso Corporation. His experience in these organizations has allowed him to refine his expertise in semiconductor technology and contribute to various innovative projects.
Collaborations
Ohnishi has collaborated with several talented individuals in his field, including Naoaki Misu and Hideo Miyata. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Yutaka Ohnishi's contributions to optical semiconductor technology are noteworthy, and his patents reflect his innovative spirit. His work continues to influence the field and inspire future advancements in semiconductor applications.