Won Suk Choi

US Patent:

7405214, Jul 29, 2008

Filed:

Apr 1, 2005

Appl. No.:

11/095686

Inventors:

Young Bok Lee - Rockville MD, US
Chang Ho Ahn - Potomac MD, US
Won Jun Choi - Frederick MD, US
Lak Shin Jeong - Seoul, KR
Sang Kook Lee - Seoul, KR

Assignee:

Rexahn Corporation - Rockville MD

International Classification:

A01N 43/04
A01N 43/54
A61K 31/70
A61K 31/505
C07D 239/00

US Classification:

514247, 514 42, 514 49, 514 50, 514256, 514269, 536 187, 536 221, 536 281, 544242

Abstract:

The present invention relates to nucleoside derivatives represented by general formulas I and II, their synthetic methods and their pharmacologically acceptable salts thereof, and compositions containing such compounds. Methods for treating hyperproliferative disorders by administering the compounds are also included.

US Patent:

20210376469, Dec 2, 2021

Filed:

Aug 12, 2021

Appl. No.:

17/444986

Inventors:

- Suwon-si, KR
Gary Xu - Allen TX, US
Won Suk Choi - Plano TX, US
Jianzhong Zhang - Plano TX, US

International Classification:

H01Q 5/35
H01Q 21/06
H01Q 5/50
H01Q 9/04

Abstract:

An antenna and a base station including the antenna. The antenna includes a sub-array that includes first and second unit cells and a feed network. The first and second unit cells comprise first and second patches, respectively, having quadrilateral shapes. The feed network comprises a first transmission line terminating below first corners of the first and second patches, respectively; a second transmission line terminating below third corners of the first and second patches, respectively; a third transmission line terminating below a second corner of the first patch and a fourth corner of the second patch; and a fourth transmission line terminating below a fourth corner of the first patch and a second corner of the second patch. The first corners are opposite the third corners on the respective first and second patches and the second corners are opposite the fourth corners on the respective first and second patches.

US Patent:

20210075107, Mar 11, 2021

Filed:

Nov 18, 2020

Appl. No.:

16/949878

Inventors:

- Suwon-si, KR
Gary Xu - Allen TX, US
Won Suk Choi - Plano TX, US
Jianzhong Zhang - Plano TX, US

International Classification:

H01Q 5/35
H01Q 21/06
H01Q 5/50
H01Q 9/04

Abstract:

An antenna and a base station including the antenna. The antenna includes a sub-array that includes first and second unit cells and a feed network. The first and second unit cells comprise first and second patches, respectively, having quadrilateral shapes. The feed network comprises a first transmission line terminating below first corners of the first and second patches, respectively; a second transmission line terminating below third corners of the first and second patches, respectively; a third transmission line terminating below a second corner of the first patch and a fourth corner of the second patch; and a fourth transmission line terminating below a fourth corner of the first patch and a second corner of the second patch. The first corners are opposite the third corners on the respective first and second patches and the second corners are opposite the fourth corners on the respective first and second patches.

US Patent:

20200076078, Mar 5, 2020

Filed:

May 13, 2019

Appl. No.:

16/410981

Inventors:

- Suwon-si, KR
Gary Xu - Allen TX, US
Won Suk Choi - Plano TX, US
Jianzhong Zhang - Plano TX, US

International Classification:

H01Q 5/35
H01Q 9/04
H01Q 5/50
H01Q 21/06

Abstract:

An antenna and a base station including the antenna. The antenna includes a sub-array that includes first and second unit cells and a feed network. The first and second unit cells comprise first and second patches, respectively, having quadrilateral shapes. The feed network comprises a first transmission line terminating below first corners of the first and second patches, respectively; a second transmission line terminating below third corners of the first and second patches, respectively; a third transmission line terminating below a second corner of the first patch and a fourth corner of the second patch; and a fourth transmission line terminating below a fourth corner of the first patch and a second corner of the second patch. The first corners are opposite the third corners on the respective first and second patches and the second corners are opposite the fourth corners on the respective first and second patches.

US Patent:

20190260115, Aug 22, 2019

Filed:

Feb 13, 2019

Appl. No.:

16/275215

Inventors:

- Suwon-si, KR
Gary Xu - Allen TX, US
Won Suk Choi - Plano TX, US

International Classification:

H01Q 1/24
H01Q 21/06
H01Q 9/04
H01Q 21/00

Abstract:

The present disclosure includes an antenna and a base station including an antenna. The antenna includes at least one unit cell that includes a flap layer, a feed network, and a patch. The flap layer includes a plurality of flaps. The feed network is positioned below the flap layer and includes a plurality of feed lines. Each of the plurality of feed lines includes an excitation port and a transmission line. The patch has a quadrilateral shape and is positioned above the flap layer such that an air gap is present between the patch and the flap layer.