Average Co-Inventor Count = 7.11
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. Sony Corporation (1 from 58,129 patents)
2. Sony Optiarc Inc. (1 from 4 patents)
3 patents:
1. 8141109 - Disc drive apparatus and electronic apparatus
2. D494981 - Transparent disc cartridge
3. D494600 - Disc cartridge