Average Co-Inventor Count = 2.31
ph-index = 4
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. Ellison Educational Equipment, Inc. (7 from 34 patents)
7 patents:
1. D869524 - Fold-up roller press
2. D736278 - Hand-operated die cutting machine
3. D632317 - Portable motorized roller press
4. 7856912 - Manually operated portable die cutting machine
5. D620044 - Hand-operated embossing machine
6. D585081 - Motorized roller die cutting machine
7. D534932 - Hand operated die cutting machine