Average Co-Inventor Count = 3.11
ph-index = 1
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. Mitsubishi Materials Corporation (2 from 1,530 patents)
2. Other (1 from 832,718 patents)
3. Yamaha Corporation (1 from 5,450 patents)
4. Ykk Corporation (1 from 1,442 patents)
5. Teikoku Piston Ring Co., Ltd. (1 from 67 patents)
2 patents:
1. 6074497 - Highly wear-resistant aluminum-based composite alloy and wear-resistant
2. 5698800 - Mixed raw material for producing porous metal sintered product