Average Co-Inventor Count = 3.21
ph-index = 6
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. R. D. Werner Co., Inc. (4 from 21 patents)
2. Werner Co. (2 from 217 patents)
6 patents:
1. 5573081 - Ladder top with bail recess
2. 5358070 - Ladder top
3. 5297889 - Packaging clip
4. 5259480 - Ladder top
5. D340773 - Ladder top
6. 5161909 - Packaging clip