Average Co-Inventor Count = 2.37
ph-index = 3
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. Seiko Epson Corporation (3 from 33,464 patents)
3 patents:
1. 6719197 - System, apparatus, and method for issuing receipts and providing advertising
2. 5428714 - Status and command function extension for industry standard printer
3. 5398305 - Printer control device to enable printing on selected multiple types of