Average Co-Inventor Count = 2.00
ph-index = 1
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. Double E Company, Inc. (2 from 19 patents)
2 patents:
1. D1053989 - Pneumatic safety valve
2. 12103810 - Shaft safety valve system