Location History:
- Chuo, JP (2009)
- Yamanashi, JP (2012 - 2015)
Company Filing History:
2 out of 13,745 
2 out of 2 
1 out of 56 Years Active: 2009-2015
Title: Nakaba Ichikawa: Innovator in Acoustic Wave Device Technology
Introduction
Nakaba Ichikawa is a notable inventor based in Yamanashi, Japan. He has made significant contributions to the field of acoustic wave devices, holding a total of 3 patents. His work focuses on improving the performance and reliability of these devices, particularly in high-temperature environments.
Latest Patents
Ichikawa's latest patents include a method for manufacturing an acoustic wave device that boasts an excellent temperature coefficient of frequency (TCF) and high accuracy in IDT pattern formation. This innovative method allows for the creation of devices that can withstand high-temperature processing of 200 degrees Celsius or more. The process involves forming an IDT on a principal surface of a piezoelectric substrate and applying a thermal spray film on the opposite surface, using materials with a smaller linear thermal expansion coefficient than the substrate.
Another significant patent by Ichikawa is for an acoustic wave device and its manufacturing method. This device is designed to minimize expansion and contraction due to temperature changes, thereby reducing frequency shifts. The device features a piezoelectric substrate with an IDT on one surface and a thermal spray film on the opposite surface, which is filled with a filling material to enhance its performance.
Career Highlights
Throughout his career, Nakaba Ichikawa has worked with prominent companies such as Murata Manufacturing Co., Ltd. and Koike Co., Ltd. His experience in these organizations has contributed to his expertise in the development of advanced acoustic wave technologies.
Collaborations
Ichikawa has collaborated with notable colleagues, including Noboru Tamura and Toshiyuki Fuyutsume. These partnerships have further enriched his work and innovation in the field.
Conclusion
Nakaba Ichikawa is a distinguished inventor whose work in acoustic wave devices has led to significant advancements in technology. His innovative methods and collaborations continue to influence the industry positively.