Average Co-Inventor Count = 11.00
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. Nippon Oil Company (1 from 690 patents)
2. Tokyo Tatsuno Co., Ltd. (1 from 22 patents)
1 patent:
1. 3995769 - Fuel dispensing and measuring device arranged on ground surface