Average Co-Inventor Count = 2.57
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. Special Products Company (3 from 9 patents)
3 patents:
1. D595559 - Spinner knob
2. D570257 - Locking hitch pin
3. D544505 - Log splitter beam