Patents by Inventor Hyung-jin Ahn
Hyung-jin Ahn 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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Publication number: 20240082263Abstract: The present invention relates to a pharmaceutical composition for combined administration of melatonin and prostaglandin E2 (PGE2) for the treatment of intestinal epithelial injury diseases, and it is confirmed that when intestinal epithelial organoids are treated in combination with melatonin and PGE2, the expression of revival stem cell markers increases more than when the two substances are treated alone, and therefore it can be usefully used as a composition for preventing, treating or improving intestinal epithelial injury diseases.Type: ApplicationFiled: May 7, 2023Publication date: March 14, 2024Applicant: PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATIONInventors: Hyung-Sik KIM, Yoo Jin SEO, Ji-Su AHN
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Patent number: 8237592Abstract: Disclosed is a system and method for providing a policy based radio frequency identification service. The system for providing the policy based radio frequency identification service includes a policy vocabulary managing device for generating and managing policy vocabulary based on a policy vocabulary writer's control input, a policy performing resource managing device for generating and managing resource information for performing a radio frequency identification service policy based on a resource designator's control input, a policy rule managing device for generating and managing a policy rule sentence based on a policy user's control input, and a policy rule performing device for performing a radio frequency identification service policy by using a policy rule sentence input based on a policy user's control input.Type: GrantFiled: July 23, 2009Date of Patent: August 7, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Hyochan Bang, Jae Gak Hwang, Cheol Sig Pyo, Hyung Jin Ahn, Kwang Hoon Kim
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Publication number: 20110099271Abstract: Provided are a system and method for enforcing a radio frequency identification (RFID) event management policy. The system includes a policy definer for defining an RFID event management policy to be used by a client to manage an apparatus on the basis of an RFID event, a policy storage for storing the RFID event management policy, a policy determiner for selecting the RFID event management policy stored in the policy storage using a profile of the client included in an RFID event management policy request when the RFID event management policy request is received from the client, and a policy enforcer converting the selected RFID event management policy according to a standard executable by the client.Type: ApplicationFiled: May 28, 2010Publication date: April 28, 2011Inventors: Joo Sang PARK, Hyo Chan Bang, Hee Sook Mo, Jee Sook Eun, Se Won Oh, Jae Gak Hwang, Jong Suk Chae, Kwang Hoon Kim, Ji Hye Song, Sun Jin Kim, Hyung Jin Ahn
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Patent number: 7874030Abstract: Embodiments of the present invention may provide a cradle transferring device, which moves and withdraws a cradle to and from an examination table of an MRI apparatus in a PET-MRI hybrid system. The cradle transferring device includes: a cradle, on which a subject lies; a shuttle table supporting the cradle and moving and withdrawing the cradle to and from the examination table of the MRI apparatus; and a cradle receiving member provided on the examination table of the MRI apparatus. The shuttle table is provided with a transfer member for holding and transferring the cradle and a transfer member driving means for reciprocating the transfer member along the shuttle table. The cradle transferring device is further provided with a cradle locking means, which locks the cradle to the examination table after the cradle is moved to the examination table.Type: GrantFiled: August 17, 2007Date of Patent: January 25, 2011Assignee: Gachon University of Medicine & Science Industry—Academic Cooperation FoundationInventors: Zang Hee Cho, Cheol Ok Lee, Young Bo Kim, Ja Weon Yun, Hyung Jin Ahn, Dong Sung Kim, Hong Shim
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Patent number: 7822459Abstract: Embodiments of the present invention may provide a PET-MRI hybrid system capable of arranging a PET apparatus and an MRI apparatus in a line. An MRI room containing the MRI apparatus and a PET room containing the PET apparatus are provided at either side of a central waiting room as opposed to each other about the waiting room. A rail portion linearly extends from the PET room to the waiting room on their bottoms. Another rail portion linearly extends on the bottom of the MRI room. A transfer unit, which supports a subject lying thereon, travels along the rail portions of the waiting room, the MRI room and the PET room. A bridge unit is provided between the rail portion of the waiting room and the rail portion of the MRI room. The bridge unit provides a space for opening and closing a shield door of the MRI room and allows the transfer unit to be reciprocated between the waiting room and the MRI room by selectively connecting the rail portion of the waiting room and the rail portion of the MRI room.Type: GrantFiled: August 17, 2007Date of Patent: October 26, 2010Assignee: Gachon University Of Medicine & Science Industry-Academic Cooperation FoundationInventors: Zang Hee Cho, Cheol Ok Lee, Young Bo Kim, Ja Weon Yun, Hyung Jin Ahn, Dong Sung Kim, Hong Shim
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Publication number: 20100097242Abstract: Disclosed is a system and method for providing a policy based radio frequency identification service The system for providing the policy based radio frequency identification service includes a policy vocabulary managing device for generating and managing policy vocabulary based on a policy vocabulary writer's control input, a policy performing resource managing device for generating and managing resource information for performing a radio frequency identification service policy based on a resource designator's control input, a policy rule managing device for generating and managing a policy rule sentence based on a policy user's control input, and a policy rule performing device for performing a radio frequency identification service policy by using a policy rule sentence input based on a policy user's control input.Type: ApplicationFiled: July 23, 2009Publication date: April 22, 2010Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyochan BANG, Jae Gak Hwang, Cheol Sig Pyo, Hyung Jin Ahn, Kwang Hoon Kim
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Publication number: 20090140843Abstract: The present invention relates to an RFID application interface method and a system thereof. In the present invention, an RFID middleware system changes a control request input from a user or an RFID application system according to a communication protocol of an RFID device to be controlled, and sends it to the RFID device. Also, when the user or the RFID application system inputs a data process policy that is common to various RFID devices of a logical RFID device group, the RFID middleware system generates data process rules that are suitable for communication capability and data processing capability of each RFID device based on the data process policy and provides an interface that allows processing of data by a corresponding RFID device.Type: ApplicationFiled: October 22, 2008Publication date: June 4, 2009Applicant: Electronics and Telecommunications Research InstituteInventors: Hyo Chan BANG, Jee Sook EUN, Se Won OH, Jae Heum LEE, Jong-Hyun PARK, Hyung-Jin AHN, Kwang-Hoon KIM
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Publication number: 20080045831Abstract: Embodiments of the present invention may provide a cradle transferring device, which moves and withdraws a cradle to and from an examination table of an MRI apparatus in a PET-MRI hybrid system. The cradle transferring device includes: a cradle, on which a subject lies; a shuttle table supporting the cradle and moving and withdrawing the cradle to and from the examination table of the MRI apparatus; and a cradle receiving member provided on the examination table of the MRI apparatus. The shuttle table is provided with a transfer member for holding and transferring the cradle and a transfer member driving means for reciprocating the transfer member along the shuttle table. The cradle transferring device is further provided with a cradle locking means, which locks the cradle to the examination table after the cradle is moved to the examination table.Type: ApplicationFiled: August 17, 2007Publication date: February 21, 2008Applicant: Gachon University of Medicine & Science Industry-Academic Cooperation FoundationInventors: Zang Hee Cho, Cheol Ok Lee, Young Bo Kim, Ja Weon Yun, Hyung Jin Ahn, Dong Sung Kim, Hong Shim
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Patent number: 6763213Abstract: An apparatus for forming a color image using electrophotography includes a photosensitive drum on which a predetermined electrostatic latent image is formed, a plurality of developing units including a developing roller supplying toner to a surface of the photosensitive drum to develop the electrostatic latent image, and pressure cams sequentially or selectively pressing corresponding ones of the developing units toward the photosensitive drum when the electrostatic latent image is developed. A bracket slide disposed in the apparatus uses tension springs to generate the same normal force in a predetermined range regardless of relative positions of the developing units, and the same normal force are applied to the photosensitive drum from the respective developing rollers while reducing a shock occurring when the developing roller contacts the photosensitive drum.Type: GrantFiled: October 16, 2002Date of Patent: July 13, 2004Assignee: Samsung Electronics Co., Ltd.Inventor: Hyung-jin Ahn
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Publication number: 20030147672Abstract: An apparatus for forming a color image using electrophotography includes a photosensitive drum on which a predetermined electrostatic latent image is formed, a plurality of developing units including a developing roller supplying toner to a surface of the photosensitive drum to develop the electrostatic latent image, and pressure cams sequentially or selectively pressing corresponding ones of the developing units toward the photosensitive drum when the electrostatic latent image is developed. A bracket slide disposed in the apparatus uses tension springs to generate the same normal force in a predetermined range regardless of relative positions of the developing units, and the same normal force are applied to the photosensitive drum from the respective developing rollers while reducing a shock occurring when the developing roller contacts the photosensitive drum. Jitter and bending of an image can be removed or minimized, and the deterioration of a image quality due to a pressure difference can be prevented.Type: ApplicationFiled: October 16, 2002Publication date: August 7, 2003Applicant: Samsung Electronics Co., Ltd.Inventor: Hyung-Jin Ahn
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Patent number: 6385424Abstract: An electrophotographic printing apparatus having a structure so that differences between surface energies of components of the electrophotographic printing apparatus contributing to image transfer are maintained within predetermined ranges, and an image transferring method thereof. The electrophotographic printing apparatus includes a photosensitive medium, developing units, a drying roller and a transfer unit having a transfer roller, whereby the peeling force (PFD) of the drying roller is in a range of 0 gram force per inch (gf/inch)≦PFD≦300 gram force per inch (gf/inch), the peeling force (PFO) of the photosensitive medium is in a range of 0 gram force per inch (gf/inch)≦PFO≦80 gram force per inch (gf/inch), and the peeling force (PFT) of the transfer roller is in a range of 200 gram force per inch (gf/inch)≦PFT≦500 gram force per inch (gf/inch), respectively, when the peeling forces are measured.Type: GrantFiled: September 21, 2000Date of Patent: May 7, 2002Assignee: Samsung Electronics Co., Ltd.Inventors: Won-hyung Lee, Kyu-cheol Shin, Hyung-jin Ahn