Average Co-Inventor Count = 2.60
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. Pitney Bowes Inc. (6 from 2,979 patents)
6 patents:
1. 6035043 - Cellular telephone manifest system
2. 5949879 - Auditable security system for the generation of cryptographically
3. 5812945 - Metered payment cellular telephone communication system
4. 5768383 - Authorized cellular voice messaging and/or analog or digital data
5. 5765106 - Authorized cellular telephone communication access and verification
6. 5740247 - Authorized cellular telephone communication payment refill system