Average Co-Inventor Count = 2.73
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. 6704309 - Internet telephone apparatus and internet telephone gateway system
2. 6381318 - Internet telephone system, access point apparatus, and communication system using access point apparatus and broad-range data communication network
3. 6094477 - Electronic mail terminal and system for automatically downloading