Patents Assigned to Samyang Corporation
  • Patent number: 12060485
    Abstract: The present invention relates to a non-coating thermoplastic resin composition, a method for manufacturing a molded article by using the same, and a molded article manufactured by the same. More specifically, the present invention is characterized by providing the thermoplastic resin composition which contains polycarbonate, polysiloxane-polycarbonate copolymer, polyester, master-batched carbon black, and additives in specific contents and the molded article, which has excellent chemical resistance, mechanical properties, light resistance, hydrolysis resistance, and low glossiness, manufactured by using the same.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: August 13, 2024
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Samyang Corporation
    Inventors: Seul Yi, Boo Youn An, Dae Sik Kim, Kyeong Hoon Jang, Min Woo Kwon, In Soo Han, Jin Gi Ahn, Do Young Bae, Hyung Jin Roh, Tae Jin An, Jung Kyu Han, Chul Jin Jo, Si Uk Cheon, Suk Woo Kang
  • Patent number: 11578203
    Abstract: Disclosed are a composition for a radar penetration cover of a vehicle which may improve dielectric properties while maintaining excellent mechanical physical properties, and the radar penetration cover including the same. The composition for a radar penetration cover includes: an amount of about 60 to 70 wt % of polybutylene terephthalate (PBT), an amount of about 10 to 20 wt % of polycarbonate (PC), and an amount of about 11.5 to 27.8 wt % of an additive including polypropylene (PP) having maleic anhydride (MAH) grafted to an end group and a glass fiber (GF), wt % based on the total weight of the composition.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: February 14, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Samyang Corporation
    Inventors: Byung Kyu Cho, Seung Chan Hong, Ho Bin Shon, Ki Yong Kim, Nung Hyun Kim
  • Patent number: 9873663
    Abstract: The present invention relates to a novel ?-oximester fluorene derivative compound, a photopolymerization initiator comprising the same, and a photoresist composition.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: January 23, 2018
    Assignees: Samyang Corporation, Korea Research Institute of Chemical Technology
    Inventors: Chun-Rim Oh, Min-Sun Lee, Won-Jung Lee, Yong-Il Cho, Seung-Rim Shin, Jong-Il Shin, Sang-Oh Lee, Kun Jun
  • Patent number: 8802804
    Abstract: Provided are a hydroxy-terminated siloxane, a polysiloxane-polycarbonate copolymer including same as a repeating unit, and a preparation method thereof. The hydroxyl-terminated siloxane has the structure of chemical formula 1.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: August 12, 2014
    Assignee: Samyang Corporation
    Inventors: Sun Mi Kim, Jae Hyun Kim, Kyung Moo Shin, Sung Hwan Cho, Whan Gi Kim, Dong Wan Seo
  • Patent number: 8461288
    Abstract: The present invention relates to a polyester resin prepared by adding an anti-hydrolysis agent to a reactant comprising an acid selected from an alkylester of aromatic dibasic acid or a mixture of an alkylester of aromatic dibasic acid and an alkylester of aliphatic dibasic acid, an aromatic diol and an aliphatic diol; and a toner produced by using the same as a binder resin.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: June 11, 2013
    Assignee: Samyang Corporation
    Inventors: Ui Gab Joung, Hyung Jin Roh, Yun Ju Chang, Sung Hwan Cho, Byung Ho Lim
  • Patent number: 8324365
    Abstract: Disclosed is a conjugate for gene transfer, which is capable of being used for treatment of incurable diseases, comprising an oligonucleotide intended to be transferred into target cells and a hydrophilic polymer, wherein an end of the oligonucleotide is covalently conjugated to the hydrophilic polymer. Also, the present invention discloses polyelectrolyte complex micelles formed from such a conjugate and a cationic polymer or cationic peptide. Such polyelectrolyte complex micelles can effectively transfer oligonucleotides as therapeutic agents into target cells, making it possible to obtain desired activities of the delivered oligonucleotides in target cells even when the micelles are clinically applied at a relatively low concentration. Therefore, the conjugate and the polyelectrolyte complex micelle are very useful in basic life science research and the medical field.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: December 4, 2012
    Assignees: Korea Advanced Institute of Science and Technology, Bioneer Corporation, Samyang Corporation
    Inventors: Ji Hoon Jeong, Tae Gwan Park
  • Patent number: 8021652
    Abstract: The present invention relates to a biodegradable branched polylactic acid derivative of formula 1, and preparation method and use thereof: <formula 1> 1-(R—X)n wherein each of X, R, I and n is defined as in the detailed description.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: September 20, 2011
    Assignee: Samyang Corporation
    Inventors: Min-Hyo Seo, Bong-Oh Kim, In-Ja Choi, Myung-Seob Shim
  • Patent number: 7959752
    Abstract: A geogrid using fiber-reinforced polymeric strips and its producing method are disclosed. The geogrid of a lattice shape includes plural longitudinal fiber-reinforced polymeric strips longitudinally arranged in parallel at regular intervals and formed by reinforcing fiber in a thermoplastic polymer resin, and plural lateral fiber-reinforced polymer strip laterally arranged in parallel at regular intervals and formed by reinforcing fiber in a thermoplastic polymer resin. Each longitudinal fiber-reinforced polymer strip has at lease one first contact point crossed with the lateral fiber-reinforced polymer strip on the upper surface and at least one second contact point crossed with the lateral fiber-reinforced polymer strips on the lower surface. The contact points are fixed by welding the longitudinal and lateral fiber-reinforced polymer strips.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: June 14, 2011
    Assignee: Samyang Corporation
    Inventors: Kwang-Jung Yun, Seong-Ho Cho, Dong-Hwan Cha, Se-Whan Choi
  • Patent number: 7879317
    Abstract: Polymeric compositions capable of forming stable micelles in an aqueous solution, comprising an amphiphilic block copolymer of a hydrophilic block and a hydrophobic block, and a polylactic acid derivative wherein one end of the polylactic acid is covalently bound to at least one carboxyl group. The carboxyl group of the polylactic acid derivative may be fixed with a di- or tri-valent metal ion, obtained by adding the di- or tri-valent metal ion to the polymeric composition.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: February 1, 2011
    Assignee: Samyang Corporation
    Inventors: Min-Hyo Seo, Sa-Won Lee, Hee-Jo Kim, Jeong-Kyung Kim, Myung-Han Huyn, Jeong-il Yu, Bong-Oh Kim
  • Publication number: 20100280214
    Abstract: Disclosed are a highly pure amphiphilic block copolymer including a hydrophobic polymer block of a poly(?-hydroxy acid), and a method for preparing the same. The method for preparing a highly pure amphiphilic block copolymer including a hydrophobic polymer block of a poly(?-hydroxy acid) includes removing ?-hydroxy acid, lactone monomers thereof, oligomers thereof and an organometal catalyst in polymerizing the amphiphilic block copolymer.
    Type: Application
    Filed: December 31, 2008
    Publication date: November 4, 2010
    Applicant: Samyang Corporation
    Inventors: Bong Oh Kim, Myung Seob Shim, Min-Hyo Seo
  • Patent number: 7691404
    Abstract: An active agent containing adhesive composition suitable for transdermal drug delivery having excellent water absorbability which comprises an effective amount of an active agent, an acrylate adhesive, a polyvinylpyrrolidone having a molecular weight of 1,000,000-5,000,000; a polyvinylpyrrolidone having a molecular weight of 2,000-50,000; a non-ionic surfactant; a terpene; and a dissolution assistant.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: April 6, 2010
    Assignee: Samyang Corporation
    Inventors: Jin Deog Song, Dong-Won Kim
  • Patent number: 7674767
    Abstract: The present invention relates to an orally administrable composition containing nanoparticles with the particle size of 500 nm or less, comprising 0.1-30 weight % of a complex of a water-soluble drug and a counter-ion substance in which the charged water-soluble drug is bonded with the counter-ion substance, 0.5-80 weight % of a lipid, 0.5-80 weight % of a polymer, and 1-80 weight % of an emulsifier, wherein the weight ratio of said lipid and said polymer is in the range of 1:0.05-3, and a preparation method thereof. The composition of the present invention has high gastrointestinal absorption rate upon oral administration, and has high drug entrapping rate in the nanoparticle, and is also stable against lipases.
    Type: Grant
    Filed: December 24, 2004
    Date of Patent: March 9, 2010
    Assignee: Samyang Corporation
    Inventors: Chaul Min Pai, Mi Hong Min, Jun Seok Hwang, Kyung Mi Cho
  • Patent number: 7655735
    Abstract: The present invention relates to an ionic multi-block copolymer composition comprising tri-block copolymers having a polypropyleneoxide or polybutyleneoxide block positioned between two polyethyleneoxide blocks and the tri-block copolymers are connected through dicarboxylic acid linkages forming a multi-block copolymer having a weight average molecular weight of more than 40,000 Dalton. The higher weight average molecular weight enables the hydrolgel formed from the multi-block copolymer of the present invention to maintain its gel status for more than several days.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: February 2, 2010
    Assignee: Samyang Corporation
    Inventors: Min-Hyo Seo, Bong-Oh Kim, Myung-Seob Shim, Sang-Jun Lee
  • Patent number: 7550157
    Abstract: A method for preparing a biodegradable polymeric micellar composition using liquid polyethylene glycol as a phase separation medium. The present invention also provides an efficient method to effectively incorporate a hydrophobic drug into a polymeric micelle in a polyethylene glycol separating medium.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: June 23, 2009
    Assignee: Samyang Corporation
    Inventors: Min-Hyo Seo, Yil-Woong Yi, Jae-Won Yu
  • Patent number: 7311901
    Abstract: The present invention relates to an amphiphilic block copolymer of a hydrophilic block and a hydrophobic block with a terminal hydroxyl group wherein the terminal hydroxyl group of the hydrophobic bock is substituted with a tocopherol or cholesterol group. It also relates to polymeric compositions capable of forming stable micelles in an aqueous solution, comprising the amphiphilic block copolymer and a polylactic acid derivative wherein one or more ends of the polylactic acid are covalently bound to at least one carboxyl group.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: December 25, 2007
    Assignee: Samyang Corporation
    Inventors: Min Hyo Seo, Bong Oh Kim, In Ja Choi, Myung Seob Shim
  • Publication number: 20070287681
    Abstract: The present invention is related to hybrid conjugates formed by covalently bonding siRNA (small interfering RNA) molecules to hydrophilic polymers for improving stability of the siRNA molecules effective for delivering the siRNA in vivo, and polyelectrolyte complex micelles formed by ionic interactions between the conjugates and multifunctional cationic compounds. The siRNA-hydrophilic polymer conjugates and polyelectrolyte complex micelles derived therefrom can be used for improving stability of the siRNA molecules in vivo. Consequently, the delivery of siRNA molecules for therapeutic applications into cells can be facilitated, and the siRNA is still active even though a small dose of the siRNA is used.
    Type: Application
    Filed: January 9, 2007
    Publication date: December 13, 2007
    Applicants: Bioneer Corporation, Samyang Corporation, Korea Advanced Institute of Science and Technology
    Inventors: Ji Jeong, Tae Park, Sun-Hwa Kim
  • Patent number: 7273619
    Abstract: The present invention relates to a transdermal composition of an antivomiting agent, and more particularly to a transdermal composition of an antivomiting agent which can minimize skin irritation by employing tropisetron as the antivomiting agent as well as by adjusting its pH to be in the range of 8 to 9 thus enhancing its rate of skin penetration thereby reducing the amount of a skin penetration enhancer used.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: September 25, 2007
    Assignee: Samyang Corporation
    Inventors: Chaul Min Pai, Jin Deog Song, Joong Woong Cho
  • Patent number: 7226616
    Abstract: The present invention provides a cationic group-containing amphiphilic block copolymer that is biocompatible and biodegradable, and when used as a drug carrier for an anionic drug, provides several advantages, such as increased blood concentration and improved stability of the drug.
    Type: Grant
    Filed: July 13, 2002
    Date of Patent: June 5, 2007
    Assignee: Samyang Corporation
    Inventors: Min-Hyo Seo, In-Ja Choi, Young-Hoon Cho
  • Patent number: 7217770
    Abstract: A biocompatible stable composition containing a hydrophobic drug, such as paclitaxel. The composition, which forms a syringeable polymeric micellar solution in aqueous or body fluids, is a freeze-dried product comprising a hydrophobic drug, i.e. paclitaxel, and an amphiphilic block copolymer wherein a hydrophobic group having affinity or attraction with the hydrophobic drug, such as paclitaxel, is incorporated on its end.
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: May 15, 2007
    Assignee: Samyang Corporation
    Inventors: Min-Hyo Seo, Yil-Woong Yi, Jae-Won Yu
  • Patent number: 7168453
    Abstract: A multi-wefts inserting weaving machine, comprising a block arraying device comprising an upper plate and a lower plate which face each other and are movable upward and downward; and a plural number of unit blocks attached to the internal facing sides of the upper plate and the lower plate of the block arraying device through combining grooves, wherein the unit blocks include two grooves. Accordingly, a lattice woven structure can be easily woven from heavy-duty materials by the present multi-wefts inserting weaving machine.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: January 30, 2007
    Assignees: T-FOR-L Co., Ltd., Samyang Corporation
    Inventors: Jin Sung Chon, Chang Kwon Lee, Seong Ho Cho, Dong Hwan Cha