Average Co-Inventor Count = 3.00
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. Hello Direct, Inc. (4 from 32 patents)
4 patents:
1. D449598 - Automatic answering machine pick-up device
2. 6285759 - Automatic answering pick-up device
3. 6081596 - Automatic answering pick-up device
4. 5930354 - Automatic answering pick-up device