Average Co-Inventor Count = 3.00
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. Toshiba Heating Appliances Co., Ltd. (5 from 21 patents)
5 patents:
1. D291726 - Grid-like guard for the front of a portable heater
2. 4653464 - Portable heating unit
3. D287752 - Heating chamber for a portable heater
4. D285335 - Oilstove
5. D283727 - Oilstove