Average Co-Inventor Count = 2.00
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. Kellogg Brush Manufacturing Co. (2 from 6 patents)
2 patents:
1. D374750 - Sponge mop head
2. D373904 - Handle for a household utensil