Average Co-Inventor Count = 3.00
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. Ashland, Inc. (2 from 240 patents)
2. Ashland Oil, Inc. (1 from 632 patents)
3 patents:
1. 5746321 - Combination magnetic separation, classification and attrition process
2. 5636747 - Combination magnetic separation, classification and attrition process
3. 4687492 - Cyclone for lessening formation of carbonaceous deposits