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. Graham Engineering Corporation (2 from 58 patents)
2 patents:
1. 4861542 - Rotary blow molding method
2. 4801260 - Rotary blow molding machine