Average Co-Inventor Count = 4.29
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. Matsushita Electric Industrial Co., Ltd. (3 from 27,375 patents)
3 patents:
1. 7083107 - Memory card
2. 6994263 - IC card
3. 6970066 - Memory card reading/writing apparatus, access method, program and storage medium thereof