Average Co-Inventor Count = 2.25
ph-index = 3
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. Qwest Communications International Inc. (2 from 435 patents)
2. Qwest Communications Int'l., Inc. (1 from 16 patents)
3 patents:
1. 6721408 - Method and apparatus for recording or forwarding messages
2. 6606648 - Method for handling accesses to a mailbox
3. 6288715 - Screensaver messaging system