Average Co-Inventor Count = 2.22
ph-index = 4
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. Other (3 from 832,912 patents)
2. Philips Electronics North America Corporation (1 from 838 patents)
3. The Regina Company (1 from 20 patents)
5 patents:
1. 7066020 - Personal severe weather warning microchip and pressure sensor
2. 6497627 - Golf swing instructional device and method
3. 5584095 - Vacuum cleaner having improved steering features
4. D370321 - Upright vacuum cleaner
5. 5323510 - Vacuum cleaner having improved steering features