Average Co-Inventor Count = 7.47
ph-index = 2
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. (2 from 8,776 patents)
2 patents:
1. 7111478 - Drum washing machine
2. 7073356 - Drum type washing machine