Average Co-Inventor Count = 5.40
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. Sharp Kabushiki Kaisha Corporation (3 from 25,560 patents)
3 patents:
1. 6742220 - Nozzle unit for vacuum cleaner
2. 6345408 - Electric vacuum cleaner and nozzle unit therefor
3. 5557822 - Electric vacuum cleaner