Average Co-Inventor Count = 1.20
ph-index = 3
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. Ftm Corporation (2 from 3 patents)
2. Ektelon (1 from 12 patents)
3 patents:
1. D299672 - Tennis racquet
2. D299042 - Tennis racquet frame
3. 4546977 - Racquet stringing machine with improved racquet retaining standard