Average Co-Inventor Count = 2.40
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. Matsushita Electric Industrial Co., Ltd. (3 from 27,375 patents)
2. Kyokuto Electric Company, Limited (3 from 3 patents)
3 patents:
1. 4286399 - Card or book involving luminescence
2. 4114009 - Switching and heat control mechanism for induction heating cooking
3. 3987268 - Power switching and control mechanism for induction heating apparatus