Average Co-Inventor Count = 3.43
ph-index = 4
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. Hitachi Electronics Engineering Co., Ltd. (4 from 88 patents)
4 patents:
1. 6631726 - Apparatus and method for processing a substrate
2. 6421932 - Method and apparatus for drying substrate plates
3. 6418640 - Drying apparatus for a substrate and drying method thereof
4. 5092011 - Disk washing apparatus