Average Co-Inventor Count = 1.00
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. Butler Automatic, Inc. (2 from 20 patents)
2 patents:
1. 5388775 - Method and means for preventing the lifting of the leading edge of a web
2. 5301891 - Method and means for preventing the lifting of the leading edge of a web