Average Co-Inventor Count = 4.78
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. Sumitomo Osaka Cement Co., Ltd. (4 from 478 patents)
2. Tokyo Electron Limited (1 from 10,317 patents)
4 patents:
1. 9837296 - Electrostatic chuck apparatus
2. 9412635 - Electrostatic chuck device
3. 9343346 - Electrostatic chuck apparatus
4. 9330953 - Electrostatic chuck device