Average Co-Inventor Count = 2.06
ph-index = 8
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. Daiwa Seiko, Inc. (16 from 602 patents)
2. Sanyo Electric Co., Ltd. (6 from 8,782 patents)
3. Tonen Corporation (6 from 141 patents)
4. Tonen Chemical Corporation (6 from 47 patents)
5. Osaka Organic Chemical Industry Co., Ltd. (6 from 9 patents)
6. Miura Dolphins Co., Ltd. (6 from 6 patents)
7. Other (2 from 832,912 patents)
8. Maruman-Optical Kabushiki Kaisha (1 from 1 patent)
9. Ohtsuka; Masahisa (1 from 1 patent)
10. Ohtsuka, Masahisa, Ohizumimachi (1 from 1 patent)
11. Masahisa Ohtsuka (1 from 1 patent)
23 patents:
1. 6247810 - Hinge for eyeglasses
2. 6113018 - Reversal preventive device
3. 5918825 - Reversal preventive device
4. 5865387 - Fishing reel brake device providing adjustable brake force through
5. 5813620 - Spinning reel for fishing comprising rotational balancing weights
6. 5678781 - Reversal preventive device
7. 5662286 - Reversal preventive device
8. 5632152 - Artificial snow in an aggregate form of snow granules
9. 5570851 - Reverse rotation preventing mechanism in spinning reel for fishing
10. 5556671 - Artificial snow in an aggregate form of snow granules
11. 5538198 - Handle for fishing reel
12. 5503343 - Reverse rotation preventive device for fishing reel
13. 5494232 - Reversal preventive device
14. 5443570 - Handle folding device for fishing reel
15. 5436039 - Artificial snow in an aggregate form of snow granules