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. Merry Electronics Co., Ltd. (2 from 57 patents)
2 patents:
1. 8027501 - Headphone
2. 7971338 - Fabricating method for earphone