Average Co-Inventor Count = 1.65
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. Shimadzu Corporation (5 from 3,532 patents)
2. Hitachi, Ltd. (1 from 42,535 patents)
3. Osaka Research Institute of Industrial Science and Technology (1 from 21 patents)
4. Akita Prefecture (1 from 12 patents)
5. City of Nagoya (1 from 6 patents)
5 patents:
1. 11143580 - Material testing machine
2. 10969312 - Striking device and natural frequency measuring device
3. 10816447 - High-speed tension testing machine
4. 9423329 - Testing apparatus
5. 7267800 - Drainage system