Average Co-Inventor Count = 1.60
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. Other (1 from 832,718 patents)
2. Nippon Telegraph and Telephone Corporation (1 from 5,290 patents)
3. Ricoh Company, Ltd. (28,546 patents)
2 patents:
1. 6272335 - Wireless access system
2. 5232244 - Front windshield impact guarding device for passengers in a vehicle