Average Co-Inventor Count = 3.75
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. 7185394 - Dirt cup assembly with attachable and detachable external filter holder
2. 7181804 - Removable dirt cup assembly with external filter