Location History:
- Hyogo, JP (1997)
- Tokyo, JP (2002 - 2008)
Company Filing History:
5 out of 21,351 
2 out of 65 
1 out of 34 Years Active: 1997-2008
Title: Teruho Yamada: Innovator in Loudspeaker Technology
Introduction
Teruho Yamada is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of audio technology, particularly in loudspeaker systems. With a total of six patents to his name, Yamada's work showcases his innovative approach to sound reproduction.
Latest Patents
Yamada's latest patents include a loudspeaker system that utilizes liquefied paper material as raw materials. This innovative design features a paper frame member that supports a vibrating plate, which is formed through a paper-skimming process. The design incorporates a central hole for voice coils and an air-release hole that allows air pressure to escape from the rear of the vibrating plate during operation. Another significant patent is for a sound control unit and sound system, which includes a motional feedback (MFB) signal control unit. This unit generates various signals in response to vibration detection, enhancing the overall sound quality produced by the speaker unit.
Career Highlights
Throughout his career, Yamada has worked with prominent companies such as Mitsubishi Electric Corporation and Foster Electric Company, Limited. His experience in these organizations has allowed him to refine his skills and contribute to advancements in audio technology.
Collaborations
Yamada has collaborated with talented individuals in the industry, including Seiji Mori and Toshikazu Iwasaki. These partnerships have fostered innovation and creativity in his projects.
Conclusion
Teruho Yamada's contributions to loudspeaker technology demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of sound engineering and a passion for improving audio experiences.