Average Co-Inventor Count = 3.84
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. At+t Corp. (4 from 4,208 patents)
4 patents:
1. 5537472 - Portable telephone with flip stand or hinged doors and having speaker
2. D369358 - Portable telephone handset
3. D365824 - Cradle for a telephone handset
4. D364621 - Telephone stand