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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 patents
US9670229B2Jun 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

TAKEDA PHARMACEUTICAL

2 patents

ENVOY THERAPEUTICS INC

2 patents

HITCHCOCK STEPHEN

1 patent

BROWN JASON W

1 patent

TAKEDA PHARMACEUTICAL CORPORATION LTD

1 patent