Average Co-Inventor Count = 3.07
ph-index = 10
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. Werner Co. (31 from 217 patents)
2. R. D. Werner Co., Inc. (5 from 21 patents)
37 patents:
1. 12492596 - Three section extension ladder
2. 12398597 - Ladder and ladder top
3. 12392197 - Ladder, top and method
4. 12110742 - Ladder with wide rung
5. 12084918 - Tri-foot, ladder and method
6. 11933106 - Ladder, foot and method
7. 11885181 - Box rail backup and method
8. 11834907 - End cap with grip and rag holder
9. 11486199 - Ladder, end cap and method
10. 11286716 - Three section extension ladder and method
11. D935053 - Ladder
12. 10876355 - Ladder, wide rung and method
13. D905869 - Ladder top
14. 10689908 - End cap with grip and rag holder
15. 10612303 - Ladder leveler and method