Average Co-Inventor Count = 2.00
ph-index = 6
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. Estech Systems, Inc. (12 from 15 patents)
2. Estoch System, Inc. (1 from 1 patent)
13 patents:
1. 8391298 - Phone directory in a voice over IP telephone system
2. 8194845 - Telephone system
3. 7826440 - Quality of service in a remote telephone
4. 7564834 - Shared knowledge in a telephone system
5. 7421066 - Telephone call/voice processing system
6. RE39722 - Telephone call/voice processing system
7. 7221741 - Dialing using caller ID
8. 7123699 - Voice mail in a voice over IP telephone system
9. 7068684 - Quality of service in a voice over IP telephone system
10. 6940962 - Dial on-hold
11. 6925167 - Service observing in a voice over IP telephone system
12. 6842505 - Communications system enhanced with human presence sensing capabilities
13. 6252944 - Telephone call/voice processing system