Average Co-Inventor Count = 4.00
ph-index = 2
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. Guangzhou Rantion Technology Co., Ltd. (2 from 15 patents)
2 patents:
1. D940786 - Electronic keyboard
2. D940785 - Electronic piano