Average Co-Inventor Count = 2.40
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. Ssd Company Limited (2 from 47 patents)
2 patents:
1. 7682237 - Music game with strike sounds changing in quality in the progress of music and entertainment music system
2. 7156742 - Memory cartridge system