Average Co-Inventor Count = 1.89
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. Fujitsu Corporation (3 from 39,244 patents)
3 patents:
1. 7688957 - Information service system, information service method, and information service program
2. 7193531 - Method for providing security
3. 7107217 - Voice interactive system and voice interactive method