Average Co-Inventor Count = 1.82
ph-index = 3
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 (5 from 5,452 patents)
5 patents:
1. 7482526 - Technique for supplying unique ID to electronic musical apparatus
2. 7428534 - Information retrieval system and information retrieval method using network
3. 7346544 - Method for selling items using a network
4. 6226697 - Network system with substitute channel assignment instead of allotted default channel for transferring data to automatically prevent conflicting among primary nodes
5. 6088364 - Interface apparatus connecting between multimedia network and music