Average Co-Inventor Count = 2.00
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. International Vibration Engineering (2 from 3 patents)
2 patents:
1. 4271935 - Inertial device to prevent and permit motion between two members
2. 4094387 - Inertia dependent device for preventing and permitting relative rotation