Average Co-Inventor Count = 3.75
ph-index = 4
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 42,485 patents)
5 patents:
1. 5748715 - Method of communications between telephone and facsimile apparatus and
2. 5592189 - Apparatus for use in offices etc.
3. 5377257 - Facsimile receiving method and facsimile apparatus carrying out the
4. 5341413 - Communication equipment with a destination area on-line display function
5. D274190 - Television receiver