Average Co-Inventor Count = 3.33
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. Hitachi Kiden Kogyo Kabushiki Kaisha (3 from 9 patents)
2. Hitachi Kiden Kogyo, Ltd. (2 from 6 patents)
3. Yagiantena Kabushiki Kaisha (2 from 2 patents)
5 patents:
1. 4644870 - Conveying system utilizing a linear pulse motor
2. 4570060 - Follow-up guidance and information transfer system for a moving object
3. 4570062 - System for optically transferring information between a moving object
4. 4436026 - Empty can crusher
5. 4373433 - Method and apparatus for dewatering screenings