Average Co-Inventor Count = 2.00
ph-index = 5
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. Matsushita Electric Corporation of America (3 from 139 patents)
2. Panasonic Corporation of North America (3 from 105 patents)
6 patents:
1. 7340798 - Upright vacuum cleaner with spring loaded nozzle
2. 6957473 - Upright vacuum cleaner with spring loaded nozzle
3. 6915544 - Agitator drive system with bare floor shifter
4. 6772474 - Upright vacuum cleaner with spring loaded nozzle
5. D485953 - Bagless canister vacuum
6. D481844 - Filter canister for vacuum cleaner