Average Co-Inventor Count = 3.38
ph-index = 7
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. Levenger Company (8 from 32 patents)
8 patents:
1. D437148 - Cabinet
2. D423572 - Portfolio
3. D422023 - Pen
4. D418997 - Adjustable table
5. D418544 - Bookstand
6. D414811 - Ink bottle
7. D410493 - Eraser
8. D408447 - Page marking device