Average Co-Inventor Count = 2.29
ph-index = 3
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. Ichikawa Co., Ltd. (2 from 97 patents)
2. Fujitsu Corporation (1 from 39,230 patents)
3. Unitika Ltd. (1 from 390 patents)
4. Nippon Chemical Industrial Co., Ltd. (1 from 163 patents)
5. Kondoh Industries, Ltd. (1 from 6 patents)
6. Cambridge Filter Japan, Ltd. (1 from 5 patents)
7. Kabushiki Kaisha Toshiba (52,722 patents)
8. Toshiba Materials Co., Ltd. (265 patents)
4 patents:
1. 6325897 - Shoe press belt with chemically bonded inner oil layer
2. 6296738 - Shoe press belt
3. D419277 - Cashless automatic teller machine
4. 5830414 - Air cleaning filter