Average Co-Inventor Count = 3.00
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. (2 from 42,496 patents)
2. Hitachi Video Engineering, Incorporated (1 from 66 patents)
3. Hitachi Video and Information Systems, Inc. (1 from 13 patents)
2 patents:
1. 5432532 - Video printer for printing plurality of kinds of images of different
2. 5146323 - Signal processing circuit including a white balance adjusting circuit in