Inventor
SUN HUIKAI
US22 patents
⚠️ This page may combine multiple inventors who share the name “SUN HUIKAI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TAKEDA PHARMACEUTICALS CO
15 patentsUS9670229B2Jun 6, 2017
5-HT3 receptor antagonists
TAKEDA PHARMACEUTICALS CO3 citations83
US10179783B2Jan 15, 2019
Tetrahydropyridopyrazines as modulators of GPR6
TAKEDA PHARMACEUTICALS CO2 citations72
US9770452B2Sep 26, 2017
Quinoxaline derivatives as GPR6 modulators
TAKEDA PHARMACEUTICALS CO4 citations72
US11045457B2Jun 29, 2021
Piperidinyl-3-(aryloxy)propanamides and propanoates
TAKEDA PHARMACEUTICALS CO5 citations71
US10077266B2Sep 18, 2018
Substituted pyrido[3,4-b]pyrazines as GPR6 modulators
TAKEDA PHARMACEUTICALS CO1 citations62
US12005054B2Jun 11, 2024
Piperidinyl-3-(aryloxy)propanamides and propanoates
TAKEDA PHARMACEUTICALS CO1 citations61
US11426397B2Aug 30, 2022
Piperidinyl- and piperazinyl-substituted heteroaromatic carboxamides as modulators of GPR6
TAKEDA PHARMACEUTICALS CO0 citations51
US10738046B2Aug 11, 2020
Substituted pyrido[3,4-b]pyrazines as GPR6 modulators
TAKEDA PHARMACEUTICALS CO0 citations51
US10406157B2Sep 10, 2019
Tetrahydropyridopyrazine modulators of GPR6
TAKEDA PHARMACEUTICALS CO0 citations51
US10407443B2Sep 10, 2019
5-HT3 receptor antagonists
TAKEDA PHARMACEUTICALS CO0 citations51
US10273225B2Apr 30, 2019
Pyrazines as modulators of GPR6
TAKEDA PHARMACEUTICALS CO0 citations51
US10125145B2Nov 13, 2018
5-HT3 receptor antagonists
TAKEDA PHARMACEUTICALS CO0 citations51
US10000468B2Jun 19, 2018
Pyrazines as modulators of GPR6
TAKEDA PHARMACEUTICALS CO1 citations51
US9695195B2Jul 4, 2017
5-HT3 receptor antagonists
TAKEDA PHARMACEUTICALS CO0 citations51
US12428403B2Sep 30, 2025
N-(heterocyclyl and heterocyclylalkyl)-3-benzylpyridin-2-amine derivatives as SSTR4 agonists
TAKEDA PHARMACEUTICALS CO0 citations50