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. Environmental Design, Inc. (2 from 2 patents)
2. Ecological Professional Industries, Inc. (1 from 1 patent)
3 patents:
1. 4624604 - Groundwater protection system
2. 4543013 - Groundwater protection system
3. 4430021 - Secure chemical waste landfill