Average Co-Inventor Count = 2.54
ph-index = 4
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. Fujitsu Corporation (3 from 39,245 patents)
2. Ngk Spark Plug Company, Limited (3 from 2,606 patents)
6 patents:
1. 8549526 - Access control apparatus and access control method
2. 7864666 - Communication control apparatus, method and program thereof
3. 7600424 - Liquid condition sensing apparatus
4. 7302494 - Traffic engineering method and node apparatus using traffic engineering method
5. 7129715 - Oil deterioration sensor
6. 7064560 - Liquid state detecting element and liquid state detecting sensor