Average Co-Inventor Count = 2.40
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. Other (1 from 832,843 patents)
2. Saddle Vent, Inc. (1 from 3 patents)
2 patents:
1. 7293759 - Access space cover lifting device
2. 4991893 - Manhole cover lifting device