Average Co-Inventor Count = 2.00
ph-index = 1
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. Hewlett-Packard Development, L.p. (1 from 89 patents)
2. Belledonne Communications (0 patent)
1 patent:
1. 7184542 - DTMF tone detection