Patents by Inventor Hyung Rok Kim
Hyung Rok Kim 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).
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Patent number: 11941845Abstract: An apparatus for estimating a camera pose according to an embodiment of the present disclosure includes a similar image searcher, a clusterer, and an estimator. The similar image searcher searches for a plurality of images similar to an input image, from among a plurality of previously-stored images, based on the input image. The clusterer creates a cluster including at least some similar images meeting predetermined conditions, from among the plurality of similar images, based on viewpoint data tagged to each of the plurality of similar images. The estimator estimates a pose of a camera that has generated the input image, based on the cluster.Type: GrantFiled: September 22, 2020Date of Patent: March 26, 2024Assignee: MAXST CO., LTD.Inventors: Sang Rok Kim, Kyu Sung Cho, Jae Wan Park, Tae Yun Son, Hyung Min Lee
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Publication number: 20230024178Abstract: A body-insertion device for a body includes an adjustment unit for adjusting bevel orientation of a needle, and a moving unit for the needle. The moving unit supports a needle unit having the needle, the bevel orientation of which is adjusted by the adjustment unit; adjusts the needle unit to the orientation which is appropriate for body-insertion; and moves the needle unit for body-insertion.Type: ApplicationFiled: October 5, 2022Publication date: January 26, 2023Inventors: Seung Man KANG, Hyung Rok KIM, Hye Seong LEE, Yun Myeong KIM
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Patent number: 8530532Abstract: The present invention relates to a hydrogel contact lens having improved wettability, and particularly to a hydrogel contact lens of a complex membrane having an IPN (interpenetrating polymer network) intra structure, which is prepared by crosslinking composition for a contact lens comprising, as a main ingredient, an acryl monomer and an oligosaccharide and optionally a silicone compound. Due to the presence of an oligosaccharide in a contact lens herein, tensile strength and wettability can be maximized to provide a superior wearing feeling and maintain wettability even after a long-term storage in a care solution such as a washing solution, a storage solution and a protein-removing solution.Type: GrantFiled: April 27, 2009Date of Patent: September 10, 2013Assignees: Korea Research Institute of Chemical Technology, Interojo Inc.Inventors: Tae Sun Chang, Hyung Rok Kim, Kyoung Hee Yun
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Publication number: 20110245358Abstract: The present invention relates to a hydrogel contact lens having improved wettability, and particularly to a hydrogel contact lens of a complex membrane having an IPN (interpenetrating polymer network) intra structure, which is prepared by crosslinking composition for a contact lens comprising, as a main ingredient, an acryl monomer and an oligosaccharide and optionally a silicone compound. Due to the presence of an oligosaccharide in a contact lens herein, tensile strength and wettability can be maximized to provide a superior wearing feeling and maintain wettability even after a long-term storage in a care solution such as a washing solution, a storage solution and a protein-removing solution.Type: ApplicationFiled: April 27, 2009Publication date: October 6, 2011Applicants: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, INTEROJO INC.Inventors: Tae Sun Chang, Hyung Rok Kim, Kyoung Hee Yun
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Patent number: 7427579Abstract: The present invention relates to a hydrogenation catalyst represented by the following formula 1, a method for the preparation thereof, and a method for preparing gamma-butyrolactone using this catalyst. The method for preparing gamma-butyrolactone from maleic anhydride using the catalyst of the invention prepared by stabilizing the precursor particles of copper oxide, zinc oxide, and manganese oxide with a silica exhibits high selectivity, high yield, and high productivity under the operation conditions of a low molar ratio of hydrogen with regard to the reactants, and enables the preparation of gamma-butyrolactone from maleic anhydride with long-term stability without requiring frequent re-activation of the catalyst: Formula (I) CuO(a)ZnO(b)MnO2(c)SiO2(d) wherein a, b, c, and d are represented on the basis of weight, wherein a is 20 to 90, b is 0.01 to 10, c is 0.01 to 5, and d is 5 to 50.Type: GrantFiled: April 18, 2003Date of Patent: September 23, 2008Assignees: Ackyung Petrochemical Co., Ltd., Korea Research Institute of Chemical TechnologyInventors: Jung-Ho Lee, Hyung-Rok Kim, Yo-Han Han, Suk-Jong Jeong, Nak-Mo Choi, Hang-Soo Woo, In-Ki Kim
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Publication number: 20050240033Abstract: The present invention relates to a hydrogenation catalyst represented by the following formula 1, a method for the preparation thereof, and a method for preparing gamma-butyrolactone using this catalyst. The method for preparing gamma-butyrolactone from maleic anhydride using the catalyst of the invention prepared by stabilizing the precursor particles of copper oxide, zinc oxide, and manganese oxide with a silica exhibits high selectivity, high yield, and high productivity under the operation conditions of a low molar ratio of hydrogen with regard to the reactants, and enables the preparation of gamma-butyrolactone from maleic anhydride with long-term stability without requiring frequent re-activation of the catalyst: Formula (1) CuO(a)ZnO(b)MnO2(c)SiO2(d) wherein a, b, c, and d are represented on the basis of weight, wherein a is 20 to 90, b is 0.01 to 10, c is 0.01 to 5, and d is 5 to 50.Type: ApplicationFiled: April 18, 2003Publication date: October 27, 2005Inventors: Jung-Ho Lee, Hyung-Rok Kim, Yo-Han Han, Suk-Jong Jeong, Nak-Mo Choi, Hang-Soo Woo, In-Ki Kim
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Publication number: 20040099617Abstract: An organizer for holding dishes, pots, pans, flatware, and other kitchen ware or utensils situated over the sink. The organizer comprises of a frame which is situated over the sink and onto which dish racks, shelves, hooks, drawers, and bins to hold the aforementioned kitchen ware are either permanently or temporarily attached. The over the sink design frees up the kitchen counter space and allows direct liquid drainage into kitchen sink for drying wet utensils.Type: ApplicationFiled: November 25, 2002Publication date: May 27, 2004Inventors: Elie F. Elias, Hyung-Rok Kim
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Patent number: 6617478Abstract: A process for preparing a 1,3-alkandiol from a 3-hydroxyester, comprises preparing a catalyst by adding an alkaline precipitator to an aqueous copper salt solution to form copper hydroxide particles, and aging the particles following the addition of a colloidal silica thereto; activating the catalyst by reduction with a H2 gas or a H2-containing gas and applying a pressure of about 5 psig to about 2000 psig at a temperature of about 100° C. to about 250° C. in the presence of an activation solvent; and hydrogenating a 3-hydroxyester in a liquid phase slurry with a H2 gas or a H2-containing gas and applying a pressure of about 50 psig to about 3000 psig at a temperature of about 100° C. to about 250° C. in the presence of the activated catalyst and a reaction solvent, whereby a 1,3-alkanediol can be selectively prepared from a 3-hydroxyester with a high yield.Type: GrantFiled: August 6, 2002Date of Patent: September 9, 2003Assignees: Samsung Electronics Co., Ltd., Korea Research Institute of Chemical TechnologyInventors: Byeong No Lee, In Sun Jung, Eun Joo Jang, Jung Ho Lee, Hyung Rok Kim, Yo Han Han
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Patent number: 6617477Abstract: A process for preparing an 1,3-alkanediol from a 3-hydroxyester includes hydrogenating a 3-hydroxyester in an alcohol-containing solvent in the presence of a hydrogenation catalyst prepared by adding an alkaline precipitator to an aqueous solution containing a copper salt to form particles, and then aging the particles following addition of colloidal silica thereto. Novel hydrogenation catalysts so prepared are also disclosed.Type: GrantFiled: November 29, 2001Date of Patent: September 9, 2003Assignees: Samsung Electronics Co., Ltd., Korea Research Institute of Chemical TechnologyInventors: Byeong No Lee, Eun Joo Jang, Jung Ho Lee, Hyung Rok Kim, Yo Han Han, Hyun Kwan Shin, Ho Sun Lee
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Publication number: 20030069456Abstract: A process for preparing a 1,3-alkandiol from a 3-hydroxyester, comprises preparing a catalyst by adding an alkaline precipitator to an aqueous copper salt solution to form copper hydroxide particles, and aging the particles following the addition of a colloidal silica thereto; activating the catalyst by reduction with a H2 gas or a H2-containing gas and applying a pressure of about 5 psig to about 2000 psig at a temperature of about 100° C. to about 250° C. in the presence of an activation solvent; and hydrogenating a 3-hydroxyester in a liquid phase slurry with a H2 gas or a H2-containing gas and applying a pressure of about 50 psig to about 3000 psig at a temperature of about 100° C. to about 250° C. in the presence of the activated catalyst and a reaction solvent, whereby a 1,3-alkanediol can be selectively prepared from a 3-hydroxyester with a high yield.Type: ApplicationFiled: August 6, 2002Publication date: April 10, 2003Applicant: Samsung Electronics Co., Ltd. andInventors: Byeong No Lee, In Sun Jung, Eun Joo Jang, Jung Ho Lee, Hyung Rok Kim, Yo Han Han
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Publication number: 20020161268Abstract: A process for preparing an 1,3-alkanediol from a 3-hydroxyester includes hydrogenating a 3-hydroxyester in an alcohol-containing solvent in the presence of a hydrogenation catalyst prepared by adding an alkaline precipitator to an aqueous solution containing a copper salt to form particles, and then aging the particles following addition of colloidal silica thereto. Novel hydrogenation catalysts so prepared are also disclosed.Type: ApplicationFiled: November 29, 2001Publication date: October 31, 2002Inventors: Byeong No Lee, Eun Joo Jang, Jung Ho Lee, Hyung Rok Kim, Yo Han Han, Hyun Kwan Shin, Ho Sun Lee