Average Co-Inventor Count = 3.79
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. Sharp Corporation (6 from 847 patents)
6 patents:
1. D277600 - Oil heater
2. D276363 - Oil heater
3. D276365 - Oil heater
4. D276366 - Oil heater
5. D268677 - Electronic computer
6. D267799 - Facsimile transceiver