Average Co-Inventor Count = 6.00
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. Ihi Corporation (1 from 1,144 patents)
2. Mitsui E&s Du Co., Ltd. (2 patents)
1 patent:
1. 11053865 - Compression ratio control device and engine