Average Co-Inventor Count = 3.60
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. Mitsubishi Denki Kabushiki Kaisha (3 from 21,351 patents)
3 patents:
1. 5155340 - Thin high temperature heater
2. 5118983 - Thermionic electron source
3. 4986214 - Thin film forming apparatus