Average Co-Inventor Count = 2.00
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. Nalge Company (3 from 23 patents)
3 patents:
1. 4993263 - Plastic hydrometer
2. D310264 - Cryogenic vial
3. 4902270 - Centrifuge tube