Average Co-Inventor Count = 2.00
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. Sumitomo Heavy Industries, Ltd. (3 from 1,177 patents)
3 patents:
1. 6969820 - Marking method and marking apparatus using multiple photon absorption, marked optical element manufactured by using the marking method and the marking apparatus
2. 6869749 - Marking method and marking apparatus using multiple photon absorption, marked optical element manufactured by using the marking method and the marking apparatus
3. 6621041 - Marking method and marking apparatus using multiple photon absorption, marked optical element manufactured by using the marking method and the marking apparatus