Average Co-Inventor Count = 2.57
ph-index = 2
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. (3 from 4,770 patents)
3 patents:
1. 6280740 - Formulations of recombinant papillomavirus vaccines
2. 5935578 - Contraceptive vaccine
3. 5693496 - DNA encoding the mouse and human PH30 beta chain protein