Average Co-Inventor Count = 2.93
ph-index = 8
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 (10 from 32 patents)
10 patents:
1. D456454 - Tray
2. D455024 - Portable writing surface
3. D439279 - Rack for folders and the like
4. D437148 - Cabinet
5. D427458 - Rack for reading materials
6. D422023 - Pen
7. D421825 - Cart
8. D418694 - Rack for reading materials
9. D414811 - Ink bottle
10. D408447 - Page marking device