79 patents
Utility
Modified Polyphenylene Oxide Resin Composition
18 Jan 24
In an embodiment, a polyphenylene oxide resin composition includes 24% by weight to 52% by weight of polyphenylene oxide (PPO), 13% by weight to 39% by weight of high Impact polystyrene (HIPS), 20% by weight to 25% by weight of inorganic filler, 5% by weight to 10% by weight of inorganic reinforcing material and 5% by weight to 10% by weight of impact modifier.
Jae Hwan Ha, Si Yeol Yang, Young Rock Kwon, Nung Hyun Kim, Sang Hyun Park
Filed: 10 Mar 23
Utility
Functional Crystalline Sweetener
7 Dec 23
The present invention relates to functional saccharides having specific crystallinity, a method for preparing thereof, and a functional sweetener comprising the crystalline saccharides.
Go-Eun KIM, Ji Won PARK, Sung Won PARK, Kyung-Hun RYU, Chong Jin PARK
Filed: 22 Aug 23
Utility
Allulose Syrup and Method for Manufacturing Same
7 Dec 23
The present invention relates to an allulose syrup and method of preparing the same, and more specifically, an allulose syrup with proper viscosity ranges, including viscosity-regulating agent and a dispersant and method of preparing the same.
Kyung Ho JOO, Kwang Soo KIM
Filed: 11 Aug 23
Utility
Camera Lens Assembly Having User-designated Functions
23 Nov 23
Provided are a camera lens assembly capable of communicating with a camera body and having a controller and a memory therein.
Hyun Hee LEE, Ji Hoon LEE
Filed: 24 Mar 20
Utility
Novel Naphthalimide Sulfonate Derivative, and Photoacid Generator and Photoresist Composition Which Comprise Same
19 Oct 23
The present invention relates to a naphthalimide sulfonate derivative, and a photoacid generator and a photoresist composition which comprise same, and, more specifically, to a naphthalimide sulfonate derivative compound, and a photoacid generator and a photoresist composition which comprise same, the compound having an excellent absorbance of light with an i-line wavelength (365 nm), having a high solubility in an organic solvent, having excellent thermal stability, and exhibiting a good acid generation rate.
Chun Rim OH, Dae Hyuk CHOI, Min Jung KIM, Deuk Rak LEE, Won Jung LEE, Yu Na CHOI, Ji Eun CHOI
Filed: 29 Sep 21
Utility
Polysiloxane-polycarbonate Copolymer Using Hydroxy-terminated Polysiloxane Mixture, and Method for Producing Same
21 Sep 23
The present invention relates to a polysiloxane-polycarbonate copolymer using a hydroxyl terminated polysiloxane mixture, and a method for producing same, and more specifically, to: a polysiloxane-polycarbonate copolymer which includes hydroxy-terminated polysiloxanes of chemical formulae 1 and 2 in a specific weight ratio as repeating units, and thus exhibits excellent transmittance and low-temperature impact strength compared to the case of using either of the hydroxy-terminated polysiloxanes by itself, and in which the overall production yield of the raw material polysiloxane is improved, such that the polysiloxane-polycarbonate copolymer is excellent in terms of economics; and a method for producing same.
Yun Ju CHANG, Kyung Moo SHIN, Ki Tae KANG, Mi Ran KIM, Seung Pil JUNG, Jin Sik CHOI, Seong Hyen HEO
Filed: 22 Apr 21
Utility
Composition for Hydrogel Formation, Hydrogel Formed by Photo-crosslinking Same, and Method for Preparing Hydrogel
21 Sep 23
The present invention relates to a composition for hydrogel formation, a hydrogel formed by photo-crosslinking same, and a method for preparing the hydrogel and, more specifically, to a composition which comprises a photo-initiator and a polyglutamic acid polymer having a photo-crosslinkable functional group introduced thereto and is capable of forming a hydrogel in real time through photo-crosslinking, to a hydrogel which is formed by photo-crosslinking the composition and can be utilized as a tissue adhesive, a surgical sealant, anti-adhesive agent, or the like due to excellent biocompatibility, superior adhesive strength in wet environments, flexibility, and ease of use, and to a method for preparing the hydrogel.
Ji Hyun CHANG, Hyung Hwan KIM, Hye Sung YOON
Filed: 5 Aug 21
Utility
Polyol Composition Using Glucose-containing Saccharide Composition, and Polyurethane Foam Including Same
10 Aug 23
The present invention pertains to: a polyol composition containing a polysaccharide alcohol, a polysaccharide alcohol-derived anhydrosugar alcohol, and an anhydrosugar alcohol polymer; and a polyurethane foam including same.
Jun Seop IM, Hoon RYU
Filed: 5 Jul 21
Utility
Alkylene-oxide-added Polyol Composition, Polyurethane Using Same, and Hot-melt Adhesive Comprising Same
10 Aug 23
The present invention relates to an alkylene-oxide-added polyol composition, a polyurethane using same, and a hot-melt adhesive comprising same, and, more specifically, to an alkylene oxide-added polyol composition, a polyurethane using same, and a hot-melt adhesive comprising same, the composition being prepared by performing, in a specific content ratio, an addition reaction between an alkylene oxide and an anhydrosugar alcohol composition comprising a) a monoanhydrosugar alcohol, b) a dianhydrosugar alcohol, c) a polysaccharide alcohol, d) an anhydrosugar alcohol derived from a polysaccharide alcohol, and e) a polymer of at least one of a) to d), and thus can increase the amount of bio components, improves adhesive strength, and enables a polyurethane to be prepared at a cost lower than that of when using petroleum polyols and other biopolyols.
Gwang Seok SONG, Hoon RYU, Jae Guk NOH, Seung Hyun YOO, Min Jung CHANG
Filed: 7 Jul 21
Utility
Hydrophilic Acrylic-modified Polyurethane and Method for Preparing Same, and Water-based Paint Composition Prepared Therefrom and Manufacturing Method Thereof
27 Jul 23
The present invention relates to a hydrophilic acrylic-modified polyurethane and a method for preparing same, and a water-based paint composition using same and a manufacturing method thereof and, more specifically, to a hydrophilic acrylic-modified polyurethane and a method for preparing same, and a water-based paint composition using same and a manufacturing method thereof, the hydrophilic acrylic-modified polyurethane comprising: a polymerization unit derived from an anhydrosugar alcohol-alkylene oxide adduct; a polymerization unit derived from polyisocyanate; and a polymerization unit derived from hydroxyalkyl (meth)acrylate, and capable of providing a water-based paint composition in which eco-friendliness, adhesiveness (adhesion), crack resistance and water resistance are all improved.
Jae Hoon LEE, Seong Ye SEO, Hoon RYU, Jun Seop IM
Filed: 16 Jun 21
Utility
Thermoplastic Resin Composition for Low Gloss Non-painting, Method for Manufacturing Molded Article Using Same, and Molded Article
6 Jul 23
Provided herein are a thermoplastic resin composition for a low gloss non-painting, a method for manufacturing a molded article using the same, and a molded article.
Kyeong Hoon Jang, In Soo Han, Seul Yi, Do Young Bae, Suk Woo Kang, Tae Jin An, Jung Kyu Han
Filed: 22 Dec 22
Utility
Lens Optical System
11 May 23
A lens optical system includes a first lens group in which a first lens of an object side is composed of a meniscus lens having a negative refractive power, and having a positive refractive power as a whole, a second lens group arranged at an image side I than the first lens group, the second lens group being a focusing group for correcting a change in image distance depending on a change in object distance, being composed of two or less lenses, and having a positive refractive power as a whole, and a third lens group arranged at the image side I than the second lens group, the third lens group having a negative refractive power as a whole, in which a first lens of the image side I is composed of a concave or meniscus lens.
Jung Du LEE, Ju Yeon JO
Filed: 3 Jun 20
Utility
Thermoplastic Resin Composition for High-brightness Unpainted Metallic Material and a Molded Article Including the Same
13 Apr 23
Seul Yi, Boo Youn An, Dae Sik Kim, Kyeong Hoon Jang, In Soo Han, Jin Gi Ahn, Jung Kyu Han, Suk Woo Kang, Do Young Bae, Tae Jin An
Filed: 3 Oct 22
Utility
Polybutylene Terephthalate Resin Composition Having Excellent Flame Retardancy and Hydrolysis Resistance and Molded Article Produced Therefrom
6 Apr 23
The present invention relates to a polybutylene terephthalate resin composition having excellent flame retardancy and hydrolysis resistance and a molded article produced therefrom and, more specifically, to a polybutylene terephthalate resin composition and a molded article produced therefrom, the polybutylene terephthalate resin composition having hydrolysis resistance and heat resistance that are improved by melt-processing a polybutylene terephthalate resin by using polycyclohexylenedimethylene terephthalate resin, and simultaneously having flame retardancy and impact resistance that are improved by using a phosphorus-based flame retardant and a compatibilizer.
Yong Jei SOHN, Tae Geon KIM, Sang Hyun PARK, Oh Gun SON, Seok Bin OH, Chul Jin JO
Filed: 5 Mar 20
Utility
Method for Producing Psicose
16 Feb 23
The present invention relates to a method for effectively utilizing fructose raffinate obtained in the process for separating psicose conversion product with a high purity chromatography in the process for preparing psicose, and more specifically, it is utilized for preparation of fructose-containing raw material solution for preparing psicose by supplying the fructose raffinate obtained in the separation step of psicose preparation into the psicose conversion reaction.
Ji Won PARK, Sung Won PARK, Hye Jung KIM, Chong Jin PARK, Kang Pyo LEE
Filed: 24 Nov 17
Utility
Kit for Preparing Nanoparticle Composition for Drug Delivery, Comprising Polylactic Acid Salt
9 Feb 23
The present invention relates to a kit for preparing a nanoparticle composition for drug delivery and, more specifically, to a kit for preparing a nanoparticle composition for drug delivery, which is designed to easily form a nanoparticle in which a drug is encapsulated by simply mixing an amphiphilic block copolymer, a cationic compound, a polylactic acid salt, and the drug that are the components of the kit.
So Jin LEE, Sang Hoon KIM, Joon Young PARK, Hye Yeong NAM, Ji Yeon SON
Filed: 16 Dec 20
Utility
Kit for Preparing Nanoparticle Composition for Drug Delivery
19 Jan 23
The present invention relates to a kit for preparing a nanoparticle composition for drug delivery and, more specifically, to a kit for preparing a nanoparticle composition for drug wherein the kit is designed such that the kit does not comprise a polylactic acid salt and nanoparticles containing a drug encapsulated therein can be easily formed just by simply mixing an amphiphilic block copolymer, a cationic compound, and a drug as components of the kit.
So Jin LEE, Sang Hoon KIM, Joon Young PARK, Hye Yeong NAM, Ji Yeon SON
Filed: 19 Nov 20
Utility
Polyester-polycarbonate Copolymer and Method for Producing Same
5 Jan 23
Kyung Moo SHIN, Jin Sik CHOI, Young Do KWON
Filed: 17 Aug 22
Utility
Telephoto Lens Optical System with Large Aperture and Inner-focus Type
5 Jan 23
A lens optical system includes a first lens group in which a first lens of an object side is composed of a meniscus lens having a positive refractive power, and having a positive refractive power as a whole, a second lens group arranged closer to an image side I than the first lens group, the second lens group being a focusing group for correcting a change in image distance depending on a change in object distance, being composed of a single lens, and having a negative refractive power as a whole, and a third lens group arranged closer to the image side I than the second lens group, the third lens group including a plurality of lenses and having a positive refractive power as a whole.
Moon Kyung KIM
Filed: 30 Jun 21
Utility
Polymer Nanoparticle Composition for Inducing Immunity and Preparation Method Therefor
29 Dec 22
Disclosed are a composition for inducing immunity against an active ingredient and a method for preparing same, the composition comprising: a nucleic acid, a polypeptide, or a combination thereof as the active ingredient; a cationic compound; an amphiphilic block copolymer; and a polylactate, wherein the active ingredient is encapsulated in a nanoparticle structure formed by the amphiphilic block copolymer and the polylactate.
So Jin LEE, Joon Young PARK, Hye Yeong NAM, He Len CHO, Goo Young KIM
Filed: 5 Nov 20