Average Co-Inventor Count = 1.23
ph-index = 5
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. Ehwa Diamond Industrial Co., Ltd. (6 from 38 patents)
2. Ehwa Diamond Ind. Co., Ltd. (2 from 24 patents)
8 patents:
1. D1004393 - Grinding pad
2. D852601 - Polishing pad
3. D563186 - Tip for a grinding wheel
4. D563440 - Tip for a grinding wheel
5. D559649 - Grinding wheel shank
6. D554671 - Grinding wheel shank
7. D481045 - Tip for core drill
8. D460767 - Saw blade