Average Co-Inventor Count = 9.00
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. Mitsubishi Materials Corporation (1 from 1,530 patents)
2. Takenaka Corporation (1 from 61 patents)
3. Keihin Ryoko Concrete Ind. Corp. (1 from 1 patent)
4. Hitachi, Ltd. (42,485 patents)
5. Resonac Corporation (288 patents)
1 patent:
1. 5478172 - Apparatus for feeding ultrafine powder in quantitative batch operation