Average Co-Inventor Count = 3.33
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. Basf Corporation (3 from 2,036 patents)
3 patents:
1. 5258072 - Additive composition for oil well cementing formulations
2. 4933378 - Fluid loss control additives for oil well cementing compositions
3. 4931489 - Fluid loss control additives for oil well cementing compositions