Average Co-Inventor Count = 1.33
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. Ball Corporation (1 from 651 patents)
2. Princeton Industries Corporation (1 from 10 patents)
2 patents:
1. D257991 - Combined desk pen set and plaque
2. D246843 - Plaque