Company Filing History:
1 out of 7,524 
1 out of 832,761 Years Active: 2004-2015
Title: Yoshifumi Kawamura: Innovator in Semiconductor Technology
Introduction
Yoshifumi Kawamura is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 2 patents. His work focuses on creating devices that enhance security and performance in electronic applications.
Latest Patents
Kawamura's latest patents include a tamper-resistant semiconductor device with access control. This innovative device features a user input unit that receives an authentication code from the user. A CPU then determines the legality of the access based on the input code and activates an enable signal if the access is deemed legal. The device employs a normal row decoder to select a memory cell based on the CPU's decoded result, while a redundancy row decoder ensures that only a redundant memory cell is selected when specific conditions are met.
Another significant patent is a high-frequency filter designed for use in superhigh frequency bands, such as microwaves and millimeter waves. This filter consists of a substrate with a metal conductor on one surface and a resonator made from a coplanar structure. The filter is characterized by a steep attenuating gradient in its filter characteristics and can be combined with variable-reactance devices for electronically controlling its performance.
Career Highlights
Throughout his career, Kawamura has worked with prominent companies, including Renesas Electronics Corporation. His experience in the semiconductor industry has allowed him to develop innovative solutions that address the challenges of modern electronic devices.
Collaborations
Kawamura has collaborated with notable professionals in the field, including Masayoshi Aikawa and Eisuke Nishiyama. These collaborations have contributed to the advancement of technology in semiconductor devices.
Conclusion
Yoshifumi Kawamura is a distinguished inventor whose work in semiconductor technology has led to the development of innovative devices that enhance security and performance. His contributions continue to impact the field significantly.