Location History:
- Higashiosaka, JP (1991)
- Osaka, JP (1994 - 2008)
Company Filing History:
5 out of 27,375 
1 out of 655 
Years Active: 1991-2008
Title: Takatoshi Yasui: Innovator in Semiconductor Technology
Introduction
Takatoshi Yasui is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 6 patents. His work has been instrumental in advancing the capabilities of input/output circuit devices and evaluation methods for semiconductor characteristics.
Latest Patents
One of Yasui's latest patents is an input/output circuit device. This device includes a first transistor formed at a substrate, with a first gate that receives an input signal. One of the first source and drain is connected to a first power supply terminal, while the other is connected to an internal node. Additionally, a second transistor is formed at the substrate, with a second gate connected to a second power supply terminal. One of the second source and drain is connected to an input/output node, and the other is connected to the internal node. Notably, the substrate of the second transistor has an electrically floating potential.
Another significant patent is related to a semiconductor device and a method for evaluating its characteristics. This patent describes a single evaluation portion formed by disposing a plurality of MIS transistors used for evaluation, which have a structure similar to that of an actual MIS transistor. In this evaluation portion, the respective source regions, drain regions, and gate electrodes of the MIS transistors are electrically connected in common to a source pad, a drain pad, and a gate pad. If the effective gate width of the evaluation portion exceeds a given value, the variations in characteristics evaluated approach those of the entire semiconductor device, thereby improving the accuracy of the evaluation.
Career Highlights
Throughout his career, Yasui has worked with notable companies, including Matsushita Electric Industrial Co., Ltd. and Matsushita Electronics Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in semiconductor technology.
Collaborations
Yasui has collaborated with several talented individuals in his field, including Toyokazu Fujii and Mitsuo Yasuhira. These collaborations have contributed to the advancement of technology and innovation in semiconductor devices.
Conclusion
Takatoshi Yasui's contributions to semiconductor technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry and pave the way for future innovations.