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. Tdk Corporation (1 from 7,976 patents)
2. Tdk Taiwan Corporation (1 from 642 patents)
1 patent:
1. 7468851 - Optical head device and optical recording/reproducing apparatus utilizing the same