Inventor
CHAN SUM
US23 patents
⚠️ This page may combine multiple inventors who share the name “CHAN SUM”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
QUEST DIAGNOSTICS INVEST INC
18 patentsUS9063119B2Jun 23, 2015
Methods for detecting vitamin C by mass spectrometry
QUEST DIAGNOSTICS INVEST INC4 citations84
US8759754B2Jun 24, 2014
Methods for detecting vitamin C by mass spectrometry
QUEST DIAGNOSTICS INVEST INC5 citations84
US8569689B2Oct 29, 2013
Methods for detecting vitamin C by mass spectrometry
QUEST DIAGNOSTICS INVEST INC7 citations84
US11300559B2Apr 12, 2022
Vitamin B2 detection by mass spectrometry
QUEST DIAGNOSTICS INVEST INC3 citations83
US10571455B2Feb 25, 2020
Vitamin B2 detection by mass spectrometry
QUEST DIAGNOSTICS INVEST INC8 citations83
US8916817B2Dec 23, 2014
Vitamin B2 detection by mass spectrometry
QUEST DIAGNOSTICS INVEST INC7 citations83
US8748810B2Jun 10, 2014
Vitamin B2 detection by mass spectrometry
QUEST DIAGNOSTICS INVEST INC8 citations83
US7952067B2May 31, 2011
Methods for detecting vitamin C by mass spectrometry
QUEST DIAGNOSTICS INVEST INC9 citations83
US9645158B2May 9, 2017
Methods for detecting vitamin C by mass spectrometry
QUEST DIAGNOSTICS INVEST INC2 citations73
US11513130B2Nov 29, 2022
Detection of vitamins A and E by tandem mass spectrometry
QUEST DIAGNOSTICS INVEST INC2 citations72
US10859584B2Dec 8, 2020
Detection of vitamins A and E by tandem mass spectrometry
QUEST DIAGNOSTICS INVEST INC2 citations72
US12174203B2Dec 24, 2024
Detection of vitamins a and e by tandem mass spectrometry
QUEST DIAGNOSTICS INVEST INC0 citations62
US12165861B2Dec 10, 2024
Mass spectrometry method for measuring vitamin B6 in body fluid
QUEST DIAGNOSTICS INVEST INC0 citations62
US12116617B2Oct 15, 2024
Mass spectrometry method for measuring thiamine in body fluid
QUEST DIAGNOSTICS INVEST INC0 citations62
US11821889B2Nov 21, 2023
Vitamin B2 detection by mass spectrometry
QUEST DIAGNOSTICS INVEST INC0 citations62
US11798794B2Oct 24, 2023
Mass spectrometry method for measuring vitamin B6 in body fluid
QUEST DIAGNOSTICS INVEST INC0 citations62
US8017403B2Sep 13, 2011
Mass spectrometry method for measuring vitamin B6 in body fluid
QUEST DIAGNOSTICS INVEST INC2 citations62
US10738344B2Aug 11, 2020
Mass spectrometry method for measuring thiamine in body fluid
QUEST DIAGNOSTICS INVEST INC0 citations52