Average Co-Inventor Count = 1.24
ph-index = 4
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 (6 from 5,450 patents)
6 patents:
1. 6232541 - Data sending apparatus and data receiving apparatus communicating data storage control command in MIDI protocol, and method therefor
2. 6103965 - Musical tone synthesizing apparatus, musical tone synthesizing method
3. 5864081 - Musical tone generating apparatus, musical tone generating method and
4. 5623112 - Automatic performance device
5. 5340939 - Instrument having multiple data storing tracks for playing back musical
6. 5274192 - Instrument for recording and playing back musical playing data