Average Co-Inventor Count = 4.00
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. Tsinghua University (1 from 4,316 patents)
2. National Taiwan University (1 from 1,722 patents)
2 patents:
1. 7989098 - Perpendicular magnetic recording medium
2. 7601444 - Perpendicular magnetic recording medium