Average Co-Inventor Count = 2.40
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. Merck + Co., Inc. (5 from 4,770 patents)
5 patents:
1. 4215107 - Parainfluenza virus vaccine and its preparation
2. 4145252 - Respiratory syncytial vaccine
3. 4122167 - Respiratory synctial vaccine
4. 4017360 - Method for purifying hepatitis B antigen
5. 4000256 - Varicella vaccine and process for its preparation