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For the Inventor, By the Inventor

Hamamatsu, Japan

Tomoyuki Kumagai

This inventor holds 6 USPTO granted patents. Top assignee: Yamaha Corporation. Active years: 1993-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomoyuki Kumagai. Retrieved from https://idiyas.com/inventor/tomoyuki-kumagai

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 1.2

ph-index = 4

Forward Citations = 36(Granted Patents)


Company Filing History:

goldMedal6 out of 5,509 
 
Yamaha Corporation
 patents

Years Active: 1993-2001

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6 patents (USPTO):Explore Patents
1. 6232541 - Data sending apparatus and data receiving apparatus communicating data storage control command in MIDI protocol, and method therefor (2001-05-15),
2. 6103965 - Musical tone synthesizing apparatus, musical tone synthesizing method (2000-08-15),
3. 5864081 - Musical tone generating apparatus, musical tone generating method and (1999-01-26),
4. 5623112 - Automatic performance device (1997-04-22),
5. 5340939 - Instrument having multiple data storing tracks for playing back musical (1994-08-23),
6. 5274192 - Instrument for recording and playing back musical playing data (1993-12-28),

Title: Tomoyuki Kumagai: Innovator in Musical Technology

Introduction

Tomoyuki Kumagai is a notable inventor based in Hamamatsu, Japan. He has made significant contributions to the field of musical technology, particularly in the development of data communication systems for electronic musical instruments. With a total of 6 patents to his name, Kumagai's work has had a lasting impact on how music is created and managed digitally.

Latest Patents

Kumagai's latest patents include a data sending apparatus and a data receiving apparatus that communicate data storage control commands in the MIDI protocol. This innovative system allows a personal computer and an electronic musical instrument to connect via MIDI cables. The personal computer stores music performance data and provides control commands for managing data storage operations in the electronic musical instrument. It converts this data and commands into MIDI exclusive data, which is then sent to the electronic musical instrument. The instrument receives this data and converts it back to the original local protocol, enabling remote management of data storage operations.

Another significant patent is for a musical tone synthesizing apparatus and method. This apparatus includes a tone color selecting device that classifies various tone colors into categories. It selects tone colors based on these classifications and incorporates an expanded tone color supplying device that enhances the range of available tones. This innovation allows for a more versatile and rich musical experience.

Career Highlights

Kumagai is currently employed at Yamaha Corporation, a leading company in the musical instrument industry. His work at Yamaha has allowed him to push the boundaries of musical technology and contribute to the development of advanced electronic instruments.

Collaborations

Throughout his career, Kumagai has collaborated with talented individuals such as Yoshihisa Ito and Tadasu Kakizaki. These collaborations have fostered innovation and creativity in the projects they have undertaken together.

Conclusion

Tomoyuki Kumagai's contributions to musical technology through his patents and work at Yamaha Corporation highlight his role as a key innovator in the field. His inventions continue to influence the way music is created and experienced today.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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