Average Co-Inventor Count = 3.00
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. (1 from 4,770 patents)
2. Merch & Co., Inc. (1 from 2 patents)
2 patents:
1. 5607852 - Process for attenuated varicella zoster virus vaccine production
2. 5360736 - Process for attenuated varicella zoster virus vaccine production