Average Co-Inventor Count = 1.86
ph-index = 8
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 (13 from 5,451 patents)
13 patents:
1. 10028015 - Signal processing apparatus and signal processing method
2. 8064614 - Audio signal delivery management system, audio signal acquiring and transmitting apparatus, audio signal identifying and outputting apparatus, and audio signal delivering apparatus
3. 5997308 - Apparatus for displaying words in a karaoke system
4. 5974387 - Audio recompression from higher rates for karaoke, video games, and
5. 5931680 - Score information display apparatus
6. 5929359 - Karaoke apparatus with concurrent start of audio and video upon request
7. 5890910 - Method of managing information files in a communication karaoke
8. 5824934 - Karaoke system including host apparatus that downloads information file
9. 5810603 - Karaoke network system with broadcasting of background pictures
10. 5654516 - Karaoke system having a playback source with pre-stored data and a music
11. 5542000 - Karaoke apparatus having automatic effector control
12. 5410097 - Karaoke apparatus with skip and repeat operation of orchestra
13. 5229756 - Image control apparatus