Average Co-Inventor Count = 10.95
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. Hitachi, Ltd. (2 from 42,496 patents)
2 patents:
1. 5245493 - Magnetic information storage apparatus including magnetic head and
2. 5241440 - Thin film magnetic head and manufacturing method therefor