Average Co-Inventor Count = 2.67
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. Other (2 from 832,843 patents)
2. U.S. Department of Energy (1 from 279 patents)
3. Crown Coal & Coke Co. (1 from 1 patent)
4 patents:
1. 8951311 - Method and system for controlling a gasification or partial oxidation process
2. 6484651 - Method for operating a slag tap combustion apparatus
3. 6085911 - Method and apparatus for extracting metallic contaminants from substrates
4. 5695642 - Method for purifying contaminated water