Average Co-Inventor Count = 4.00
ph-index = 1
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 (2 from 33,418 patents)
2. Omron Corporation (2 from 4,116 patents)
2 patents:
1. 7809468 - Transportation state notification system and method, program, and information storage medium
2. 7277774 - Transportation state notification system and method, and information storage medium