Average Co-Inventor Count = 2.90
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. Sanyo Electric Co., Ltd. (3 from 8,780 patents)
3 patents:
1. 7448225 - Cold storage
2. 7430876 - Cold storage
3. 7237399 - Cold storage