Average Co-Inventor Count = 3.75
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. Unisys Corporation (1 from 2,439 patents)
2. Digital Sound Corporation (1 from 6 patents)
2 patents:
1. 6442245 - System and method for providing voice messaging services utilizing a network connection
2. 6088428 - Voice controlled messaging system and processing method