Growing community of inventors

Hong Kong, China

Man Chak Chan

Average Co-Inventor Count = 1.00

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.

Forward Citations = 49

Man Chak ChanMan Chak Chan (22 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Duraflex Hong Kong Limited (22 from 114 patents)


22 patents:

1. D1100740 - Buckle

2. D1100739 - Buckle

3. D1100738 - Buckle

4. D1080368 - Cord lock

5. 12203293 - Lock and suitcase

6. 12108846 - Belt buckle and belt

7. D1038829 - Sliding buckle

8. D1021687 - Buckle

9. D1014328 - Sliding buckle

10. D1013573 - Belt hook

11. D1008083 - Sliding buckle

12. D933456 - Sewable USB cable clip

13. D933524 - Snap button

14. D933525 - Snap button

15. D933526 - Snap button

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as of
12/12/2025
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