Average Co-Inventor Count = 2.57
ph-index = 7
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. Yokogawa Electric Corporation (8 from 1,325 patents)
2. Nippon Kogaku K.k. (8 from 849 patents)
3. Kabushiki Kaisha Toshiba (1 from 52,711 patents)
16 patents:
1. 11959851 - Pipeline thickness measurement sensor device
2. 11434724 - Apparatus, method, and program for estimating a state of a natural resource to be extracted
3. 10305793 - Communication device for switching stacks and method of controlling execution of stacks
4. 10110685 - Position information authoring system, position information authoring apparatus, and position information authoring method
5. 9864908 - Slow change detection system
6. 9733979 - Communication device
7. 9632062 - Ultrasonic pipe measurement apparatus
8. 8566587 - Network system and method for operating network system
9. 4540264 - Photographing lens focusing device
10. 4515453 - Camera having a flash unit built therein
11. 4482234 - Automatic focusing device
12. 4464037 - Motor-driven camera capable of automatic focus control
13. 4456356 - Focus adjusting device of a camera
14. 4451729 - Automatic focusing device and lens motor control
15. 4422746 - Auto focus camera