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. Shin Caterpillar Mitsubishi Ltd. (2 from 128 patents)
2. Nippon Cable System Inc. (1 from 99 patents)
2 patents:
1. 5535712 - Device for controlling an engine
2. 5345157 - Actuator for an accelerator for engine control valve control and the like