Patents by Inventor Won-jae Choi

Won-jae Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9464642
    Abstract: A soft robotic device includes a flexible body having a width, a length and a thickness, wherein the thickness is at least 1 mm, the flexible body having at least one channel disposed within the flexible body, the channel defined by upper, lower and side walls, wherein at least one wall is strain limiting; and a pressurizing inlet in fluid communication with the at least one channel, the at least one channel positioned and arranged such that the wall opposite the strain limiting wall preferentially expands when the soft robotic device is pressurized through the inlet.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: October 11, 2016
    Assignee: President and Fellows of Harvard College
    Inventors: Filip Ilievski, Xin Chen, Aaron D. Mazzeo, George M. Whitesides, Robert F. Shepherd, Ramses V. Martinez, Won Jae Choi, Sen W. Kwok, Stephen Morin, Adam Stokes, Zhihong Nie
  • Publication number: 20160216027
    Abstract: A refrigerator in which a storage box can be sufficiently drawn by placing a sliding shelf at the bottom of the storage box, and the storage box is easily inserted when it is inserted into inside the storage chamber, and less noise is generated, is provided.
    Type: Application
    Filed: September 1, 2014
    Publication date: July 28, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyoung Min GO, Sung Cheul PARK, Won Jae CHOI
  • Patent number: 9206449
    Abstract: A method of biologically producing p-hydroxybenzoic acid, and a method for producing p-hydroxybenzoic acid from lignin through chemical and biological conversion.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: December 8, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Won Jae Choi, Jong Won Byun, Jin Ho Ahn, Young Wan Ha, Joo-Hyun Seo
  • Patent number: 9155715
    Abstract: A transdermal composition comprising tolterodine having improved storage stability is disclosed. The transdermal composition comprising tolterodine contains an antioxidant to stabilize tolterodine and can be stored for a long period of time.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: October 13, 2015
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Yong Youn Hwang, Won Jae Choi, Yeo-Jin Park, Joon-gyo Oh
  • Publication number: 20150250758
    Abstract: The present invention provides a rivastigmine medicine having improved stability. The invention also provides a method, for packing pharmaceutical medicines containing rivastigmine, capable of improving stability.
    Type: Application
    Filed: September 17, 2013
    Publication date: September 10, 2015
    Applicant: SK CHEMICAL CO., LTD.
    Inventors: Yong-Youn Hwang, Won-No Youn, Won-Jae Choi, Yeo-Jin Park, Joon-Gyo Oh, Sung-Hyuk Kim, Hye-Min Kim, Sae byeok Shin, Hun-Taek Kim, Jin H. Sung
  • Patent number: 8809401
    Abstract: Disclosed is a composition for transdermal administration containing tolterodine. The composition comprises lidocaine or a pharmaceutically acceptable salt thereof to achieve enhanced skin penetration. The composition enhances the skin penetration of tolterodine. Therefore, a successful commercial application of a tolterodine-containing transdermal preparation based on the composition can be expected.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: August 19, 2014
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Yong Youn Hwang, Won-Jae Choi, Jae-Sun Kim, Yeo-Jin Park, Joon-Gyo Oh, Bong-Yong Lee, Hae-In Rhee, Jong-Seob Im
  • Publication number: 20140220104
    Abstract: The present invention relates to a rivastigmine-containing patch having improved storage stability and proper release property.
    Type: Application
    Filed: May 21, 2012
    Publication date: August 7, 2014
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Yong-youn Hwang, Won-Jae Choi, Jae-Sun Kim, Won-No Youn, Yeo-Jin Park, Joon-gyo Oh, JongSeob Im
  • Publication number: 20140154761
    Abstract: A method of biologically producing an aromatic carboxylic acid by contacting a substrate containing an aromatic carboxylic acid having a para-hydroxy group with a biocatalyst that removes the para-hydroxy group.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Won Jae CHOI, Jin Ho AHN, Jong Won BYUN, Young Wan HA
  • Publication number: 20140155570
    Abstract: A method of biologically producing an terephthalic acid or a derivative thereof by contacting a substrate containing an aromatic carboxylic acid with a biocatalyst that adds a carboxyl group at the para-position of the aromatic carboxylic acid.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Won Jae CHOI, Jin Ho AHN, Jong Won BYUN, Young Wan HA
  • Publication number: 20140109560
    Abstract: A soft robotic device includes a flexible body having a width, a length and a thickness, wherein the thickness is at least 1 mm, the flexible body having at least one channel disposed within the flexible body, the channel defined by upper, lower and side walls, wherein at least one wall is strain limiting; and a pressurizing inlet in fluid communication with the at least one channel, the at least one channel positioned and arranged such that the wall opposite the strain limiting wall preferentially expands when the soft robotic device is pressurized through the inlet.
    Type: Application
    Filed: November 21, 2011
    Publication date: April 24, 2014
    Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Filip Ilievski, Xin Chen, Aaron D. Mazzeo, George M. Whitesides, Robert F. Shepherd, Ramses V. Martinez, Won Jae Choi, Sen W. Kwok, Stephen A. Morin, Adam Stokes, Zhihong Nie
  • Publication number: 20140051140
    Abstract: A method of biologically producing p-hydroxybenzoic acid, and a method for producing p-hydroxybenzoic acid from lignin through chemical and biological conversion.
    Type: Application
    Filed: August 14, 2013
    Publication date: February 20, 2014
    Inventors: Won Jae CHOI, Jong Won BYUN, Jin Ho AHN, Young Wan HA, Joo-Hyun SEO
  • Publication number: 20130046025
    Abstract: Disclosed is a composition for transdermal administration containing tolterodine. The composition comprises at least one essential oil as an abirritant to minimize skin irritation caused by tolterodine. The composition relieves skin irritation caused by tolterodine. Therefore, a successful commercial application of a tolterodine-containing transdermal preparation based on the composition can be expected.
    Type: Application
    Filed: February 17, 2011
    Publication date: February 21, 2013
    Applicant: SK Chemicals Co., Ltd.
    Inventors: Yong Youn Hwang, Won-Jae Choi, Jae-Sun Kim, Yeo-Jin Park, Joon-Gyo Oh, Bong-Yong Lee, Hae-In Rhee, Jong-Seob Im
  • Publication number: 20130046026
    Abstract: Disclosed is a composition for transdermal administration containing tolterodine. The composition comprises lidocaine or a pharmaceutically acceptable salt thereof to achieve enhanced skin penetration. The composition enhances the skin penetration of tolterodine. Therefore, a successful commercial application of a tolterodine-containing transdermal preparation based on the composition can be expected.
    Type: Application
    Filed: February 17, 2011
    Publication date: February 21, 2013
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Yong Youn Hwang, Won-Jae Choi, Jae-Sun Kim, Yeo-Jin Park, Joon-Gyo Oh, Bong-Yong Lee, Hae-In Rhee, Jong-Seob Im
  • Patent number: 8367726
    Abstract: The present invention relates to an acid salt of tolterodine with superior stabililty and useful as a transdermal drug delivery system. More specifically, the present invention relates to a novel acid salt of tolterodine with superior stabililty to the conventional acid salts of tolterodine, which is useful as a pharmaceutical composition for the treatment of overactive bladder and can be formulated into a transdermal drug delivery system.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: February 5, 2013
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Yong Youn Hwang, Nam Ho Kim, Won Jae Choi, Yong Han Kim
  • Publication number: 20120123162
    Abstract: A transdermal composition comprising tolterodine having improved storage stability is disclosed. The transdermal composition comprising tolterodine contains an antioxidant to stabilize tolterodine and can be stored for a long period of time.
    Type: Application
    Filed: May 27, 2010
    Publication date: May 17, 2012
    Applicant: SK CHEMICALS CO., LTD
    Inventors: Yong Youn Hwang, Won Jae Choi, Yeo Jin Park, Joon-gyo Oh
  • Publication number: 20100331552
    Abstract: The present invention relates to an acid salt of tolterodine with superior stabililty and useful as a transdermal drug delivery system. More specifically, the present invention relates to a novel acid salt of tolterodine with superior stabililty to the conventional acid salts of tolterodine, which is useful as a pharmaceutical composition for the treatment of overactive bladder and can be formulated into a transdermal drug delivery system.
    Type: Application
    Filed: February 20, 2009
    Publication date: December 30, 2010
    Applicant: SK Chemicals Co., Ltd.
    Inventors: Yong Youn Hwang, Nam Ho Kim, Won Jae Choi, Yong Han Kim
  • Publication number: 20100267817
    Abstract: The present invention relates to a lyophilized composition with an improved reconstitution time comprising a taxoid and a method thereof. More specifically, the present invention relates to a lyophilized composition with an improved reconstitution time prepared by mixing and dissolving a taxoid; cyclodextrin (CD); a hydrophilic polymer selected from the group consisting of hydroxypropylmethyl CeIIuIoSe (HPMC), polyethylene glycol (PEG), and polyvinylpyrrolidone (PVP); and a bulking agent of saccharides in water for injection; and lyophilizing the mixture, and a method thereof.
    Type: Application
    Filed: November 21, 2008
    Publication date: October 21, 2010
    Inventors: Woo Jae Jang, Joon-Gyo Oh, Young Youn Hwang, Won Jae Choi, Key An Um
  • Publication number: 20100261251
    Abstract: Two novel microorganisms, Acinetobacter baumanni ATCC PTA-8303 and Cryptoeoecus albiduz ATCC PTA 8302 having epoxide hydrolase activity are described. The epoxide hydrolases from these microorganisms can be used to selectively hydrolyze (via epoxide opening) one enantiomer of ethyl-3,4-epoxybutyrate in a racemic mixture by a kinetic resolution process to result in the accumulation of the other enantiomer. Methods of preparing the microorganisms and their use in a kinetic resolution process of racemic ethyl-3,4-epoxybutyrate are also disclosed.
    Type: Application
    Filed: July 12, 2007
    Publication date: October 14, 2010
    Applicant: Agency for Science, Technology and Research
    Inventor: Won Jae Choi
  • Patent number: 7600695
    Abstract: A cogeneration system and a method for controlling the cogeneration system in which waste heat of an engine is mainly used to prevent an outdoor heat exchanger from being frosted, or is used not only to prevent the outdoor heat exchanger from being frosted, but also to enhance the heating performance of an indoor heat exchanger, in accordance with ambient temperature conditions, so that the cogeneration system can positively cope with ambient temperature conditions, and can exhibit a high energy efficiency.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: October 13, 2009
    Assignee: LG Electronics Inc.
    Inventors: Seung Tak Kang, Chang Min Choi, Won Jae Choi, Hyung Soo Lim, Yoon Jei Hwang
  • Patent number: 7587894
    Abstract: An exhaust structure for an engine is disclosed. The exhaust structure includes an exhaust line, through which the exhaust gas discharged from the engine passes. The exhaust line has a double pipe structure capable of preventing the condensed water formed in the exhaust line from entering the engine, so that it is possible to prevent engine failure, and thus, to achieve an enhancement in the durability and reliability of the engine.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: September 15, 2009
    Assignee: LG Electronics Inc.
    Inventors: Seung Tak Kang, Chang Min Choi, Won Jae Choi, Hyung Soo Lim, Yoon Jei Hwang