Average Co-Inventor Count = 2.18
ph-index = 2
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. Duplo Seiko Corporation (4 from 46 patents)
2. Seiko Epson Corporation (3 from 33,418 patents)
4 patents:
1. 8210527 - Paper ejecting device with swinging protruding members
2. 8167302 - Paper inverting device
3. 8052143 - Paper inverting device
4. 7686295 - Paper ejecting device