Average Co-Inventor Count = 5.00
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 (3 from 150 patents)
2. Hitachi Metals, Ltd. (2 from 2,333 patents)
3 patents:
1. 4014089 - Method of connecting beams and columns of steel frame construction
2. 3960458 - Fittings for connecting columns and beams of steel frame construction
3. 3938297 - Fittings for connecting columns and beams of steel frame construction