Average Co-Inventor Count = 4.00
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. American Home Products Corporation (1 from 1,567 patents)
2. American Home Products Corporation (del.) (1 from 41 patents)
3. Brattle Instrument Corporation (1 from 3 patents)
3 patents:
1. 4519396 - Fetal heart rate monitor apparatus and method for combining electrically
2. 4489726 - Apparatus and method for qualitatively selecting between signals
3. 4299234 - Fetal heart rate monitor apparatus and method for combining electrically