Average Co-Inventor Count = 1.57
ph-index = 7
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Yamaha Corporation (18 from 5,450 patents)
2. Fujitsu Corporation (3 from 39,228 patents)
18 patents:
1. 11693621 - Sound reproduction system and sound quality control method
2. 11322129 - Sound reproducing apparatus, sound reproducing method, and sound reproducing system
3. 11252526 - Acoustic device and head-related transfer function selecting method
4. 11200879 - Sound control device, wearable sound device and control method
5. 11134356 - Speech providing device, speech reproducing device, speech providing method, and speech reproducing method
6. 10820132 - Voice providing device and voice providing method
7. 10805710 - Acoustic device and acoustic processing method
8. 8630405 - Echo removing apparatus
9. 7396993 - Transmission of MIDI using TCP and UDP
10. 7188005 - Vehicle capable of auditorily informing its state and method for auditorily informing state of vehicle
11. 7164075 - Music session support method, musical instrument for music session, and music session support program
12. 7110838 - Method and apparatus for downloading data to portable devices
13. 7102071 - Apparatus and method for processing tone reproducing digital data against unauthorized use
14. 6056555 - Karaoke apparatus using background video with variable reproduction
15. 5982980 - Karaoke apparatus