Average Co-Inventor Count = 4.36
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. A.l.m.t. Corporation (2 from 80 patents)
2. Sumitomo Electric Industries, Limited (1 from 10,264 patents)
3. Sumitomo Electric Hardmetal Corp. (1 from 553 patents)
4. Nagoya University (1 from 371 patents)
2 patents:
1. 10011890 - Sodium tungstate production method
2. 8974674 - Method for producing ammonium tungstate aqueous solution