Average Co-Inventor Count = 1.26
ph-index = 6
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. Sugatsune Kogyo Co., Ltd. (18 from 228 patents)
2. Other (2 from 832,912 patents)
3. Noritake Co., Ltd. (1 from 198 patents)
4. Koushi Yamaguchi (1 from 1 patent)
5. Yamaguchi, Koushi (0 patent)
21 patents:
1. 11541040 - Medicine for improving state of pregnancy, and use thereof
2. 10837210 - Hinge and hinge bracket
3. 10494845 - Door hinge for a door and a door frame
4. D852608 - Hinge
5. 10143682 - Medicine for improving state of pregnancy, and use thereof
6. 10113344 - Stay
7. D818791 - Hinge
8. 9222291 - Toggle type fastener
9. D743772 - Hinge for building
10. 8960387 - Damper position adjusting device
11. 8739468 - Door opening and closing device
12. 8584402 - Door opening/closing system and catch therefor
13. D639136 - Door closer
14. D635435 - Door closer
15. D628458 - Catcher for a door closer