Location History:
- Kanagawa, JP (2009)
- Tokyo, JP (2011 - 2014)
Company Filing History:
2 out of 1,458 
1 out of 832,891 Years Active: 2009-2014
Title: **Tatsuya Ijima: Innovator in Semiconductor Technology**
Introduction
Tatsuya Ijima, a prominent inventor based in Tokyo, Japan, has made significant contributions to the field of semiconductor technology. With a total of three patents to his name, Ijima's innovations focus on enhancing memory devices, which play a crucial role in modern electronics.
Latest Patents
Among his latest inventions is the stacked type semiconductor memory device and chip selection circuit. This innovative device features a structure that allows multiple semiconductor chips to be stacked, enabling the selection of a desired chip through unique chip identification numbers assigned to each. The device comprises several operation circuits connected in a cascading manner to facilitate the output of these identification numbers after executing predetermined operations. Furthermore, the invention includes comparison circuits that determine equality between the identification number and a commonly connected chip selection address, ensuring precise chip selection and functionality.
Career Highlights
Tatsuya Ijima has had an illustrious career, having worked for well-respected companies in the semiconductor industry, including Elpida Memory, Inc. His experiences at such reputable firms have contributed to his extensive knowledge and expertise in semiconductor technologies.
Collaborations
Throughout his career, Ijima has collaborated with notable colleagues, including Kayoko Shibata and Hiroaki Ikeda. These partnerships have fostered an environment of innovation and have significantly influenced the development of new technologies in the semiconductor field.
Conclusion
Tatsuya Ijima's dedication to advancing semiconductor technology exemplifies the spirit of innovation. His inventions not only enhance the capabilities of memory devices but also pave the way for future advancements in electronic systems. As technology continues to evolve, Ijima's contributions will undoubtedly leave a lasting impact in the world of semiconductors.