Average Co-Inventor Count = 2.40
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. Seiko Epson Corporation (3 from 33,464 patents)
3 patents:
1. 8406500 - Simultaneously scanning multiple checks
2. 7913097 - Fiscal data recorder programmed to write only non-blank values to memory
3. 7523320 - Fiscal data recorder with protection circuit and tamper-proof seal