This inventor holds 3 USPTO granted patents. Top assignee: Nec Corporation. Active years: 1995-2001.
Location History:
- Kakegawa, JP (1996)
- Shizuoka, JP (1995 - 2001)
Company Filing History:
Years Active: 1995-2001
Title: Hisami Nagai: Innovator in Vibration Technology
Introduction
Hisami Nagai is a prominent inventor based in Shizuoka, Japan. She has made significant contributions to the field of vibration technology, holding a total of 3 patents. Her innovative designs have paved the way for advancements in portable devices and selective calling receivers.
Latest Patents
One of her latest patents is a vibration motor assembly designed for use in portable phones. This assembly features a weight mounted on the output shaft of a motor, which contains a hermetically closed bore filled with a magnetic fluid. A magnetic body is positioned within the bore near the center of rotation of the weight. When the motor is not energized, the weight remains stationary, and magnetic particles in the fluid adhere to the magnetic body. This design allows for efficient motor activation with minimal torque, enhancing the device's performance.
Another notable patent is a wristwatch-type selective calling receiver. This device consists of two separate bands, each containing an antenna circuit for tuning. The first band includes a first antenna and tuning capacitors, with stoppers arranged on its outer surface. These stoppers are connected to predetermined points on the first antenna, allowing for different effective antenna lengths. The second band features a second antenna and a hook that can engage with the stoppers based on the user's wrist thickness, forming a complete antenna circuit.
Career Highlights
Hisami Nagai is currently employed at NEC Corporation, where she continues to innovate and develop new technologies. Her work has significantly impacted the design and functionality of modern electronic devices.
Collaborations
Throughout her career, she has collaborated with notable colleagues, including Kazuhiro Kudoh and Masahiro Matai. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies.
Conclusion
Hisami Nagai's contributions to vibration technology and selective calling receivers demonstrate her innovative spirit and dedication to advancing electronic devices. Her patents reflect a commitment to enhancing user experience through cutting-edge design and functionality.