Average Co-Inventor Count = 4.48
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. The United States of America As Represented by the Department of Health (3 from 1,217 patents)
2. The United States of America As Represented by the Secretary of (1 from 2,202 patents)
4 patents:
1. 4894228 - Vaccine against hepatitis A virus
2. 4636469 - Isolation of hepatitis A virus strain HM-175
3. 4620978 - Hepatitis A virus purified and triply cloned
4. 4532215 - Isolation of hepatitis A virus strain HM-175