Average Co-Inventor Count = 10.00
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. Other (2 from 832,912 patents)
2. Ngk Insulators, Inc. (2 from 4,924 patents)
3. Nkk Corporation (2 from 614 patents)
2 patents:
1. 5294419 - Method for removing nitrogen oxides and organic chlorine compounds from
2. 5260044 - Method for removing organic chlorine compounds from combustion waste gas