Average Co-Inventor Count = 1.41
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. Chevron Research Company (4 from 1,860 patents)
4 patents:
1. 4102861 - Extrusion stabilization of polypyrrolidone by hydroquinones
2. 4101479 - Polyolefin photostabilizer composition
3. 4077940 - Thermal stabilization of polypyrrolidone against reversion to monomer
4. 3987001 - Ultraviolet protectorant composition