Average Co-Inventor Count = 2.40
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. Acf Industries, Incorporated (1 from 400 patents)
2. Sunnen Products Company (1 from 61 patents)
2 patents:
1. 4630377 - Valve seat runout gage
2. 4267129 - Carburetor bowl vent