This inventor holds 7 USPTO granted patents and 1 EPO patent. Top assignee: Seiko Epson Corporation. Active years: 1994-2005.
Location History:
- Nagano, JP (1994)
- Suwa, JP (1994)
- Nagano-ken, JP (1998 - 1999)
- Ina, JP (2003 - 2005)
Company Filing History:
Years Active: 1994-2005
Title: Eiji Karaki: Innovator in Quartz Technology
Introduction
Eiji Karaki is a prominent inventor based in Ina, Japan, known for his significant contributions to quartz technology. With a total of 7 patents to his name, he has made remarkable advancements in the field, particularly in the development of quartz resonators and devices.
Latest Patents
Karaki's latest patents include innovations such as a quartz resonating piece, quartz resonator, and quartz device. These inventions provide a stabilized frequency characteristic over a wide temperature range. The quartz resonating piece is designed so that the electrical axis of quartz corresponds to the X axis, the mechanical axis corresponds to the Y axis, and the optical axis corresponds to the Z axis. The quartz plate features specific angles of rotation that enhance its performance and stability.
Another notable patent involves a piezoelectric resonator container and a method for manufacturing piezoelectric resonators. This design includes a cylindrical case with an open end and a stem for sealing. The unique shape of the outer peripheral face of the stem and the inner peripheral face of the case ensures that gas-tightness is maintained, preventing issues such as incomplete sealing or breakage.
Career Highlights
Eiji Karaki is currently employed at Seiko Epson Corporation, where he continues to innovate and develop new technologies. His work has significantly impacted the field of electronics and precision instruments, showcasing his expertise in quartz applications.
Collaborations
Throughout his career, Karaki has collaborated with notable colleagues, including Hideaki Nakamura and Tatsuo Ikeda. These partnerships have fostered a creative environment that has led to groundbreaking advancements in their respective fields.
Conclusion
Eiji Karaki's contributions to quartz technology exemplify his dedication to innovation and excellence. His patents reflect a deep understanding of the complexities involved in quartz resonators and devices, positioning him as a key figure in the industry.