Average Co-Inventor Count = 6.95
ph-index = 3
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. (3 from 42,508 patents)
3 patents:
1. 5805125 - Portable information processing apparatus and liquid crystal display
2. 5483253 - Portable information processing apparatus and liquid crystal display
3. 4123851 - Clothes drier