Average Co-Inventor Count = 2.29
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. Sumitomo Electric Industries, Limited (4 from 10,239 patents)
4 patents:
1. 4854153 - Automatic calibration apparatus for a partial gas pressure measuring
2. D299435 - Thermal recorder
3. 4779199 - Patient monitor
4. D296823 - Percutaneous gas monitor