Average Co-Inventor Count = 3.00
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. Hoya Corporation (2 from 2,530 patents)
2 patents:
1. 6548139 - Glass substrate for magnetic recording medium, magnetic recording medium, and method of manufacturing the same
2. 6383404 - Glass substrate for magnetic recording medium, magnetic recording medium, and method of manufacturing the same