Average Co-Inventor Count = 5.36
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. Perftech, Inc. (36 from 60 patents)
36 patents:
1. 12438889 - System, method and computer readable medium for message authentication to subscribers of an internet service provider
2. 12192213 - System, method and computer readable medium for processing unsolicited electronic mail
3. 11956251 - System, method and computer readable medium for determining users of an internet service
4. 11743205 - Internet provider subscriber communications system
5. 11736543 - Internet provider subscriber communications system
6. 11563750 - System, method and computer readable medium for determining users of an internet service
7. 11552961 - System, method and computer readable medium for processing unsolicited electronic mail
8. 11509665 - System, method and computer readable medium for message authentication to subscribers of an internet service provider
9. 11336586 - Internet provider subscriber communications system
10. 10992686 - System, method and computer readable medium for determining users of an internet service
11. 10986102 - System, method and computer readable medium for processing unsolicited electronic mail
12. 10904265 - System, method and computer readable medium for message authentication to subscribers of an internet service provider
13. 10834157 - Internet provider subscriber communications system
14. 10616131 - Internet provider subscriber communications system
15. 10601841 - System, method and computer readable medium for determining users of an internet service