Average Co-Inventor Count = 4.06
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. Hitachi, Ltd. (4 from 42,485 patents)
4 patents:
1. 8218945 - Motion picture recording/reproducing apparatus
2. 7796857 - Video playback apparatus
3. 7716604 - Apparatus with thumbnail display
4. 7681217 - Video system and video selection method thereof