Average Co-Inventor Count = 2.18
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. Koppers Company, Inc. (4 from 297 patents)
4 patents:
1. 4083753 - One-spot coke quencher car
2. 4004985 - System for quenching hot coke
3. 3984289 - Coke quencher car apparatus
4. 3930961 - Hooded quenching wharf for coke side emission control