Average Co-Inventor Count = 3.00
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. Harper Brush Works, Inc. (4 from 15 patents)
4 patents:
1. D586519 - Lobby dust pan
2. D560482 - Handle clip
3. D546012 - Double bucket
4. D544669 - Household bucket