Average Co-Inventor Count = 1.36
ph-index = 7
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. Classco Inc. (6 from 6 patents)
2. Other (3 from 832,843 patents)
3. Summa Four, Inc. (1 from 3 patents)
10 patents:
1. 8005195 - Telephone network messaging
2. 7602890 - Telephone network messaging
3. 7418087 - Telephone network messaging
4. 7206572 - Calling party announcement apparatus
5. 7194077 - System and method for acquiring information relating to geographic location
6. 7099439 - Loop test apparatus and method
7. 6970695 - Calling party announcement apparatus
8. 6038443 - Calling party announcement apparatus
9. 5526406 - Calling party announcement apparatus
10. 5426634 - Flexible call-processing apparatus for ISDN telephone channels