Average Co-Inventor Count = 6.86
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. Tennant Company (2 from 265 patents)
2 patents:
1. 11154175 - Surface maintenance machine with removable storage
2. 10456003 - Surface maintenance machine