Average Co-Inventor Count = 1.76
ph-index = 5
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. The W. B. Marvin Manufacturing Company (5 from 21 patents)
5 patents:
1. 6351602 - Upright radiant electric heating appliance
2. 6167196 - Radiant electric heating appliance
3. 5652826 - Radiant electric space heater with capillary tube thermostat
4. 5437001 - Upright radiant electric heating appliance
5. 5381509 - Radiant electric space heater