This inventor holds 3 USPTO granted patents. Top assignee: Yamaha Corporation. Active years: 2002-2008.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2002-2008
Title: Kei Kunisada: Innovations in Keyboard Instruments.
Introduction
Kei Kunisada is an inventor based in Hamamatsu, Japan, whose work focuses on electronic keyboard and musical instrument technologies. His patent portfolio includes 3 patents, with inventions addressing sound production and instrument design.
Latest Patents
Kunisada’s latest patents include two keyboard-related inventions.
The patent titled “Electronic Keyboard Musical Instrument” describes a system designed to produce natural, sufficiently loud sounds while allowing convenient tone-quality adjustment. A soundboard is attached to a frame, with multiple transducers mounted at spaced intervals. The instrument generates individual driving signals for the transducers based on performance and damper-pedal signals, taking into account each transducer’s characteristics and position. This coordinated control makes the soundboard vibrate at frequencies corresponding to musical pitches, producing musical tones and damper sounds.
The patent titled “Keyboard Instrument” concerns the arrangement of an instrument’s keyboard, sound generators, and upper body panels. It describes tone-escape openings in separated regions of the operating panel, along with a rear panel positioned behind those openings. The design specifies the rear panel’s width and height in relation to the keyboard and keys, contributing to the instrument’s structural and acoustic configuration.
Career Highlights
Kunisada’s patented work reflects an emphasis on improving how keyboard instruments generate and project sound. His inventions combine electronic signal control with physical soundboard vibration and instrument-body design. He is associated with Yamaha Corporation.
Collaborations
Kunisada’s listed coworkers include Takashi Fujita and Takashi Kato. Their shared professional context is associated with Yamaha Corporation and its musical-instrument development.
Conclusion
Kei Kunisada’s patents demonstrate a focused contribution to keyboard-instrument innovation, particularly in soundboard control, tone production, and instrument construction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile