Average Co-Inventor Count = 4.00
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. (2 from 42,496 patents)
2. Hiatchi, Ltd. (1 from 17 patents)
3 patents:
1. D451505 - Portable computer
2. D449307 - Combined touch pad and buttons for a portable computer
3. D444464 - Portable computer