Average Co-Inventor Count = 4.50
ph-index = 4
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. (8 from 42,517 patents)
2. Htachi, Ltd. (1 from 3 patents)
9 patents:
1. D571387 - Video camera with recorder and player
2. D570386 - Video camera with recorder and player
3. D565071 - Video camera with recorder and player
4. D565072 - Video camera with recorder and player
5. D561802 - Video camera with recorder and player
6. D561803 - Video camera with recorder and player
7. D557302 - Video camera with digital video disc player
8. D552143 - Video camera with digital video disc player
9. D549260 - Video camera with digital video disc player