Average Co-Inventor Count = 2.00
ph-index = 4
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. The Lubrizol Corporation (4 from 1,305 patents)
4 patents:
1. 6881780 - Dispersant-viscosity improvers for lubricating oil compositions
2. 6294628 - Dispersant-viscosity improvers for lubricating oil compositions
3. 5969068 - Dispersant-viscosity improvers for lubricating oil compositions
4. 5534175 - Copolymers of unsaturated fatty esters, their use as viscosity improver