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. Plough, Inc. (3 from 58 patents)
3 patents:
1. 4545983 - Method for making cosmetic pencils
2. 4537766 - Long-wearing eyeshadow compositions
3. 4383875 - Method for making cosmetic pencils