Average Co-Inventor Count = 5.92
ph-index = 5
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. (5 from 42,517 patents)
5 patents:
1. 6188388 - Information presentation apparatus and information display apparatus
2. 5835078 - Information presentation apparatus and information display apparatus
3. 5712658 - Information presentation apparatus and information display apparatus
4. 5677993 - Information processing apparatus using pointing input and speech input
5. 5581242 - Automatic alarm display processing system in plant