Average Co-Inventor Count = 4.00
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. Hiraoka & Co., Ltd. (3 from 13 patents)
3 patents:
1. 4749625 - Amorphous metal laminate sheet
2. 4714650 - Stainproof, flame-resistant composite sheet material
3. 4686135 - Composite sheet material