Average Co-Inventor Count = 2.00
ph-index = 2
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. Ionics, Inc. (2 from 125 patents)
2 patents:
1. 4977094 - Process for monitoring the quality of water
2. 4940667 - Apparatus for monitoring the quality of water