Average Co-Inventor Count = 7.11
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 25,577 patents)
3 patents:
1. 6742220 - Nozzle unit for vacuum cleaner
2. 6553613 - Electric vacuum cleaner
3. 6345408 - Electric vacuum cleaner and nozzle unit therefor