Average Co-Inventor Count = 5.39
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 (4 from 265 patents)
4 patents:
1. 11154175 - Surface maintenance machine with removable storage
2. 10765286 - Surface maintenance machine
3. 10456003 - Surface maintenance machine
4. 10405723 - Surface maintenance machine