Average Co-Inventor Count = 1.80
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. Minnesota Mining and Manufacturing Company (2 from 7,865 patents)
2. Bethesda Research Laboratories, Inc. (1 from 1 patent)
3 patents:
1. D303430 - Transcutaneous electrical nerve stimulator
2. 4803986 - Ergonometric transcutaneous electrical nerve stimulator
3. D270277 - Autoradiogram reader