Average Co-Inventor Count = 4.17
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. Kajima Corporation (5 from 150 patents)
2. Kabushiki Kaisha F R C (4 from 4 patents)
3. Hitachi-high-technologies Corporation (3 from 2,874 patents)
8 patents:
1. D828576 - Column
2. D827151 - Column end cap
3. D827150 - Column pipe
4. 5798011 - Method of making window frame for concrete wall panel
5. 5591286 - Method of making window frame for concrete wall panel
6. 5575870 - Method of making window frame for concrete wall panel
7. 5356687 - Window frame for concrete wall panel
8. 5010705 - Curtain wall