Average Co-Inventor Count = 1.53
ph-index = 15
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. (28 from 602 patents)
2. Daiwa Golf Co., Ltd. (10 from 43 patents)
3. Kabushiki Kaisha Zen-on Gakufu Shuppansha (1 from 4 patents)
4. David Golf Co., Ltd. (1 from 1 patent)
5. Daiwa Gold Co., Ltd. (1 from 1 patent)
6. Daiwa Deiko, Inc. (1 from 1 patent)
42 patents:
1. D368945 - Golf club head
2. D363748 - Golf club head
3. D351441 - Golf club head
4. D347254 - Golf club head
5. D345191 - Golf club head
6. D339397 - Golf club head
7. D334959 - Golf club head
8. D332984 - Golf club head
9. D327523 - Golf club head
10. D319250 - Musical tuning meter
11. D314031 - Golf club head
12. D310254 - Golf club head
13. D310115 - Golf club head
14. D307783 - Golf club head
15. D307458 - Reel for fishing