Average Co-Inventor Count = 3.43
ph-index = 1
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 Heavy Industries Limited (1 from 4,633 patents)
2. Mitsubishi Jukogyo Kabushiki Kaisha (1 from 1,326 patents)
3. Matsushita Communication Industrial Co., Ltd. (1 from 10 patents)
4. Matsushita Tsushin Kogyo Kabushiki Kaisha (1 from 1 patent)
2 patents:
1. 4288688 - Toll road terminal machine
2. 4262312 - Magnetic recording and printing device for card mediums