Average Co-Inventor Count = 3.00
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. Merck + Co., Inc. (5 from 4,770 patents)
5 patents:
1. 6933134 - DNA molecules encoding vascular endothelial cell growth factor II subunits
2. 6180107 - Vascular endothelial cell growth factor II
3. 5726152 - Vascular endothelial cell growth factor II
4. 5532343 - Purification and characterization of a glioma-derived growth factor
5. 5338840 - DNA encoding glioma-derived growth factor having vascular endothelial