Inventor
Sun Ki Chang
Inventor
Gyeonggi-do, KR
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Dprimary
C07DHeterocyclic compounds28%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium17%
A61KPreparations for medical, dental or toiletry purposes10%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry10%
C07CAcyclic or carbocyclic compounds10%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations7%
Y02PClimate change mitigation technologies in the production or processing of goods7%
C07BGeneral methods of organic chemistry3%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds3%
C08LCompositions of macromolecular compounds3%
PatentTitleYear
11,046,661Method for producing lactam compound, and lactam compound produced thereby202110,702,859Method for preparing ligand for polyketone polymerization catalyst202010,538,504Preparation method of intermediate for oxazolidinone derivative202010,501,403Method for preparation of (S)-N1-(2-aminoethyl)-3-(4-alkoxyphenyl)propane-1,2-diamine trihydrochloride201910,428,096Polyketone polymerization catalyst201910,065,933Method for preparing gadobutrol20189,822,084'Method for preparing calcobutrol'20179,790,170'Method for preparing lacosamide'20179,249,109'Method for preparing dipeptidyl peptidase-IV inhibitor and intermediate'20169,006,436'Preparation method of intermediate of sitagliptin'20157,049,447'Aziridine derivatives and their preparation methods'2006Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2006Based in Yongin-si, KR· patent location history
2015–2020Patents assigned to ST PHARM CO LTD (8)· patent assignee history
2015Patents assigned to BYEON CHANG HO (1)· patent assignee history
2015Patents assigned to CHANG SUN KI (1)· patent assignee history
2015–2020Based in Gyeonggi-do, KR· patent location history
2016Patents assigned to DONG A PHARM CO LTD (1)· patent assignee history
2016–2019Based in Gunpo-si, KR· patent location history
2019Patents assigned to HYOSUNG CHEMICAL CORP (1)· patent assignee history
2021Based in Daejeon, KR· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ST PHARM CO LTD | 8 | 2015–2020 |
| BYEON CHANG HO | 1 | 2015 |
| CHANG SUN KIself | 1 | 2015 |
| DONG A PHARM CO LTD | 1 | 2016 |
| HYOSUNG CHEMICAL CORP | 1 | 2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Gyeonggi-do, KR | 7 | 2015–2020 |
| Gunpo-si, KR | 2 | 2016–2019 |
| Daejeon, KR | 1 | 2021 |
| Yongin-si, KR | 1 | 2006 |