Average Co-Inventor Count = 2.27
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. The Singer Company (4 from 1,246 patents)
2. Bissell Inc. (1 from 417 patents)
5 patents:
1. 5735017 - Compact wet/dry vacuum cleaner with flexible bladder
2. 4660246 - Versatile vacuum cleaning appliance
3. 4512057 - Floor care appliance
4. 4397057 - Apparatus for cleaning carpets and the like
5. 4334336 - Surface cleaning vacuum nozzle