Average Co-Inventor Count = 2.00
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. Sony Corporation (1 from 58,131 patents)
2. Sony Nec Optiarc Inc. (1 from 12 patents)
1 patent:
1. 8259546 - Optical disc device, tracking control start method, and tracking control start program