Average Co-Inventor Count = 3.27
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. (1 from 42,485 patents)
2. Hitachi Maxell, Limited (1 from 1,112 patents)
3. Hitachi Consumer Electronics Co., Ltd. (1 from 365 patents)
3 patents:
1. 8989555 - Information processor
2. 8319848 - Imaging apparatus
3. 8040410 - Imaging apparatus