Average Co-Inventor Count = 6.43
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. Other (2 from 832,812 patents)
2 patents:
1. 4173878 - Method of manufacturing tangential expanders for oil control piston rings
2. 4136718 - Apparatus for making serpentiform springs