Average Co-Inventor Count = 2.58
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. Lucent Technologies Inc. (2 from 9,364 patents)
2. At&t Bell Laboratories (2 from 3,345 patents)
3. Avaya Technology LLC (1 from 696 patents)
5 patents:
1. 6452937 - Card-based voice messaging system
2. 6134308 - Caller ID logging: entry storage on a per line basis
3. 6101249 - Automatic call screening telecommunication device
4. 5243437 - Fax machine having automated maintenance features
5. 5127047 - Facsimile machine having user notification capability