Average Co-Inventor Count = 2.40
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. Kewanee Industries (1 from 21 patents)
2. Millmaster Onyx Group, Inc. (1 from 15 patents)
2 patents:
1. 4425243 - Foaming agents for use in drilling for oil and gas
2. 4077990 - Surface-active agent