Average Co-Inventor Count = 1.00
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. Empire Level Mfg. Co. (2 from 10 patents)
2. Empire Level Mfg. Corp. (1 from 33 patents)
3 patents:
1. 7908753 - Hands-free level
2. 7797847 - Hands-free level
3. 7739804 - Hands-free long level