This inventor holds 4 USPTO granted patents. Top assignees: Nec Electronics Corporation, Epson Toyocom Corporation. Active years: 2005-2008.
Location History:
- Kanagawa, JP (2005 - 2007)
- Kawasaki, JP (2008)
Company Filing History:
4 out of 2,467 
1 out of 100 
Years Active: 2005-2008
Title: Yuki Fujimoto: Innovator in Piezoelectric Technology
Introduction
Yuki Fujimoto is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of piezoelectric technology, holding a total of 4 patents. His work focuses on improving the stability and efficiency of piezoelectric oscillators and related semiconductor devices.
Latest Patents
Fujimoto's latest patents include advancements in piezoelectric oscillators. One of his innovations addresses the deterioration in frequency stability over time in conventional piezoelectric oscillators that utilize an accumulation type MOS capacitance element. By employing either a P-channel or N-channel transistor type as a MOS capacitance element in a variable capacitance circuit, he has improved the performance of these oscillators. A bias voltage is applied between the extraction electrodes, effectively eliminating instability in the MOS capacitance element over time.
Another significant patent involves a voltage-controlled capacitive element and semiconductor integrated circuit. In this design, an N well is integrated into the upper surface of a P-type substrate, with a gate insulating film and gate electrode placed above it. The gate electrode connects to a gate terminal, while two p-diffusion regions are positioned to sandwich the gate electrode, connecting to ground potential. This configuration generates capacitance between the gate electrode and the N well of a varactor element, enhancing the device's functionality.
Career Highlights
Throughout his career, Yuki Fujimoto has worked with prominent companies such as NEC Electronics Corporation and Epson Toyocom Corporation. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.
Collaborations
Fujimoto has collaborated with notable colleagues, including Susumu Kurosawa and Yasutaka Nakashiba. Their combined efforts have further advanced the field of piezoelectric technology.
Conclusion
Yuki Fujimoto's contributions to piezoelectric technology and semiconductor devices highlight his innovative spirit and dedication to improving electronic components. His patents reflect a commitment to enhancing stability and efficiency in technology, making him a significant figure in his field.