Average Co-Inventor Count = 1.00
ph-index = 2
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. Panasonic Corporation of North America (2 from 105 patents)
2 patents:
1. 8898856 - Dirt cup with secondary cyclonic cleaning chambers
2. 7887613 - Vacuum cleaner having dirt collection vessel with toroidal cyclone