Average Co-Inventor Count = 3.43
ph-index = 2
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. Tokyo Shibaura Electric Co., Ltd. (2 from 681 patents)
2. Other (1 from 833,002 patents)
2 patents:
1. 4157610 - Method of manufacturing a field effect transistor
2. 4116722 - Method for manufacturing compound semiconductor devices