Average Co-Inventor Count = 7.37
ph-index = 4
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. Hitachi Metals, Ltd. (3 from 2,333 patents)
2. Kajima Corporation (3 from 150 patents)
5 patents:
1. 6745528 - Stainless-steel floor and method of constructing the stainless-steel floor
2. 5063719 - Column base structure
3. 4905436 - Column/beam joint structure
4. 4014089 - Method of connecting beams and columns of steel frame construction
5. 3938297 - Fittings for connecting columns and beams of steel frame construction