Average Co-Inventor Count = 1.75
ph-index = 4
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. Yamada Yuki Seizo Co., Ltd. (3 from 6 patents)
2. Nec Corporation (2 from 35,670 patents)
3. Yamada Corporation (1 from 17 patents)
4. 501 Yamada Yuki Seizo Co., Ltd. (1 from 1 patent)
7 patents:
1. 10338215 - Measuring point information providing device, change detection device, methods thereof, and recording medium
2. 8469680 - Valve body for pumps
3. 6208283 - Synthetic aperture radar system and platform position measuring apparatus used in the same
4. 5120202 - Switching device for reciprocating pumps
5. 5002468 - Switching device for reciprocating pumps
6. 5002469 - Switching device for reciprocating pumps
7. 4923168 - Spool type switching valve device