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San Clemente, CA, United States of America

Sum Chan

Average Co-Inventor Count = 2.42

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 = 44

Sum ChanQibo Jiang (16 patents)Sum ChanRichard E Reitz (12 patents)Sum ChanChangming Yang (7 patents)Sum ChanSum Chan (23 patents)Qibo JiangQibo Jiang (16 patents)Richard E ReitzRichard E Reitz (89 patents)Changming YangChangming Yang (7 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Quest Diagnostics Investments, Inc. (22 from 479 patents)

2. Quest Diagnostics Investment Incoporated (1 from 1 patent)


23 patents:

1. 12196742 - Vitamin B2 detection by mass spectrometry

2. 12174203 - Detection of vitamins a and e by tandem mass spectrometry

3. 12165861 - Mass spectrometry method for measuring vitamin B6 in body fluid

4. 12116617 - Mass spectrometry method for measuring thiamine in body fluid

5. 11821889 - Vitamin B2 detection by mass spectrometry

6. 11798794 - Mass spectrometry method for measuring vitamin B6 in body fluid

7. 11513130 - Detection of vitamins A and E by tandem mass spectrometry

8. 11300559 - Vitamin B2 detection by mass spectrometry

9. 10859584 - Detection of vitamins A and E by tandem mass spectrometry

10. 10738344 - Mass spectrometry method for measuring thiamine in body fluid

11. 10571455 - Vitamin B2 detection by mass spectrometry

12. 10215765 - Detection of vitamins A and E by tandem mass spectrometry

13. 9645158 - Methods for detecting vitamin C by mass spectrometry

14. 9234901 - Mass spectrometry method for measuring vitamin B6 in body fluids

15. 9063119 - Methods for detecting vitamin C by mass spectrometry

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12/12/2025
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