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 Dadc US Inc (2 from 11 patents)
2 patents:
1. 9472232 - Dual-sided optical discs with normally oriented and inverted text patterns
2. 8850981 - Single-sided printing providing dual-sided reading of print on optical discs