Average Co-Inventor Count = 3.95
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 (5 from 58,129 patents)
2. Sony Optiarc Inc. (1 from 4 patents)
5 patents:
1. 8141109 - Disc drive apparatus and electronic apparatus
2. 7350220 - Disk drive unit
3. 7269834 - Disc type recording and/or reproducing apparatus
4. 7137129 - Disk drive apparatus
5. 7017167 - Disc recording and/or reproduction apparatus