Average Co-Inventor Count = 2.67
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. Felica Networks, Inc. (3 from 122 patents)
2. Sony Corporation (1 from 58,132 patents)
4 patents:
1. 8143998 - Noncontact IC card communication system and communication method
2. 7780082 - Communication system, reader/writer, authentication method, and computer program
3. 7520431 - Communication system, reader/writer, authentication method, and computer program
4. 7445148 - Radio communication system, reader/writer apparatus, key managing method, and computer program