Average Co-Inventor Count = 5.00
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. Tonen Corporation (1 from 141 patents)
2. Mitsui Shipbuilding & Engineering Co., Ltd. (1 from 27 patents)
1 patent:
1. 5094196 - System for operating two-cycle spark ignition engine