Average Co-Inventor Count = 4.74
ph-index = 3
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 (3 from 265 patents)
3 patents:
1. D674462 - Cleaning solution generator
2. 6735811 - Cleaning liquid dispensing system for a hard floor surface cleaner
3. 6192542 - Sweeper conveyor overflow and leakage recycling ramp