Average Co-Inventor Count = 7.76
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. Sanyo Electric Co., Ltd. (2 from 8,777 patents)
2 patents:
1. 5768072 - Magnetic head for magnetic recording and reproduction
2. 5305166 - Magnetic head slider