Average Co-Inventor Count = 3.41
ph-index = 1
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 (8 from 5,451 patents)
2. Fujitsu Corporation (2 from 39,238 patents)
8 patents:
1. 11134356 - Speech providing device, speech reproducing device, speech providing method, and speech reproducing method
2. 10805710 - Acoustic device and acoustic processing method
3. 10614727 - Musical instrument practice system, playing practice implementation device, content reproduction system, and content reproduction device
4. 10403166 - Musical performance assistance device and method
5. 10354630 - Performance information processing device and method
6. 8921678 - Generating tones by combining sound materials
7. 8476520 - Sound generation control apparatus
8. 8431812 - Tone data search apparatus and method