Location History:
- Kyoto, JP (2014)
- Hirakata, JP (2016)
- Soraku-gun, JP (2020)
Company Filing History:
Years Active: 2014-2020
Title: Innovations of Yoshiyuki Kawaguchi
Introduction
Yoshiyuki Kawaguchi is a notable inventor based in Soraku-gun, Japan. He has made significant contributions to the field of crystal oscillation technology. With a total of three patents to his name, Kawaguchi's work has advanced the understanding and application of crystal oscillating elements.
Latest Patents
Kawaguchi's latest patents include a crystal oscillating element, a crystal oscillation device, and a method of manufacturing a crystal oscillating element. The oscillating element features a crystal blank that includes a pair of major surfaces, which are partially configured by crystal planes, and side surfaces connecting the outer edges of these major surfaces. Additionally, it incorporates a mesa portion and an outer peripheral portion that surrounds the mesa, with a thickness that is thinner than that of the mesa portion. The excitation electrodes are strategically placed on the major surfaces, while the pad portions are located on one of the major surfaces and are electrically connected to the excitation electrodes. Notably, a portion of the edge that contacts a crystal plane includes a projecting portion that does not exceed the height of the mesa from the outer peripheral portion. Another patent involves a composite substrate that features a silicon layer with reduced lattice defects, which includes an insulating substrate and a functional layer bonded to the upper surface of the substrate.
Career Highlights
Kawaguchi is currently employed at Kyocera Corporation, where he continues to innovate and develop new technologies. His work has been instrumental in enhancing the performance and reliability of crystal oscillation devices.
Collaborations
Some of his notable coworkers include Shiro Miyazaki and Masahiko Goto, who have collaborated with him on various projects within the field.
Conclusion
Yoshiyuki Kawaguchi's contributions to crystal oscillation technology through his patents and work at Kyocera Corporation highlight his importance as an inventor. His innovations continue to impact the industry positively.