Patents by Inventor Ji Ho Kwak
Ji Ho Kwak 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: 11943985Abstract: Discussed are a light-emitting device and a light-emitting display device having improved efficiency and increased lifespan. A plurality of stacks is provided between an anode and a cathode for at least a subpixel to emit a predetermined color, and emissive layers in different stacks include the same color-based materials having different luminous properties.Type: GrantFiled: June 7, 2021Date of Patent: March 26, 2024Assignee: LG DISPLAY CO., LTD.Inventors: Jin Ho Park, Kyu Il Han, Chang Hwan Kwak, Dong Hyeok Lim, Hwa Yong Shin, Ji Hyung Lee
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Patent number: 11619333Abstract: A connecting device for piping is disclosed. The connecting device for piping includes a connecting device body having therein ball insertion holes, balls inserted into the ball insertion holes so as to come into close contact with the outer surface of a pipe, a locking cap including a locking cap body movably coupled to the connecting device body and a pressing rim portion pressing the balls, a locking cap spring pressing the locking cap toward the position at which the locking cap contacts the balls, a stopper cap movably coupled to the connecting device body so as to limit movement of the locking cap, a plunger including a plunger body, a plunger tube inserted into the pipe, and a packing disposed on the periphery of the plunger tube so as to come into contact with the pipe, and a plunger spring pressing the plunger toward the pipe.Type: GrantFiled: April 13, 2021Date of Patent: April 4, 2023Assignee: ESSEN TECH CO., LTD.Inventors: Ji Ho Kwak, Sang In Jang, Jin Myung Hong, Jung Hoon Choi, Ha Yeong Seong
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Publication number: 20220042636Abstract: A connecting device for piping is disclosed. The connecting device for piping includes a connecting device body having therein ball insertion holes, balls inserted into the ball insertion holes so as to come into close contact with the outer surface of a pipe, a locking cap including a locking cap body movably coupled to the connecting device body and a pressing rim portion pressing the balls, a locking cap spring pressing the locking cap toward the position at which the locking cap contacts the balls, a stopper cap movably coupled to the connecting device body so as to limit movement of the locking cap, a plunger including a plunger body, a plunger tube inserted into the pipe, and a packing disposed on the periphery of the plunger tube so as to come into contact with the pipe, and a plunger spring pressing the plunger toward the pipe.Type: ApplicationFiled: April 13, 2021Publication date: February 10, 2022Applicant: ESSEN TECH CO., LTD.Inventors: Ji Ho KWAK, Sang In JANG, Jin Myung HONG, Jung Hoon CHOI, Ha Yeong SEONG
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Patent number: 11060648Abstract: Disclosed is a connecting device for piping for connecting a pipe to another pipe or to another part for piping. The connecting device includes an adapter and a pipe nipple configured to be threadedly engaged with the adapter. The pipe nipple is fixed to an end of a pipe, and an end of another pipe is inserted into the adapter. The adapter includes a hollow adapter body, a cap coupled to the adapter body, a grip ring configured to fix the pipe introduced into the adapter body, a body-sealing member configured to provide a seal between the adapter body and the pipe, a sleeve disposed between the grip ring and the body-sealing member, and a metal sealing member configured to provide a seal between the adapter body and the pipe nipple.Type: GrantFiled: January 16, 2020Date of Patent: July 13, 2021Assignee: ESSEN TECH CO., LTD.Inventors: Ji Ho Kwak, Jung Hoon Choi, Ha Yeong Seong, Sang In Jang
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Publication number: 20210033233Abstract: Disclosed is a connecting device for piping for connecting a pipe to another pipe or to another part for piping. The connecting device includes an adapter and a pipe nipple configured to be threadedly engaged with the adapter. The pipe nipple is fixed to an end of a pipe, and an end of another pipe is inserted into the adapter. The adapter includes a hollow adapter body, a cap coupled to the adapter body, a grip ring configured to fix the pipe introduced into the adapter body, a body-sealing member configured to provide a seal between the adapter body and the pipe, a sleeve disposed between the grip ring and the body-sealing member, and a metal sealing member configured to provide a seal between the adapter body and the pipe nipple.Type: ApplicationFiled: January 16, 2020Publication date: February 4, 2021Applicant: ESSEN TECH CO., LTD.Inventors: Ji Ho KWAK, Jung Hoon CHOI, Ha Yeong SEONG, Sang In JANG
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Patent number: 8925176Abstract: A structure to connect a refrigerant pipe and an air conditioner having the same, the connecting structure enabling a refrigerant pipe to be easily connected to an indoor unit or an outdoor unit of an air conditioner and including a refrigerant pipe through which refrigerant flows, a socket part connected to one end of the refrigerant pipe, and a coupling nut coupled to an outer circumferential surface of the socket part, wherein, a socket part is provided with a grip-ring allowing the refrigerant pipe to move in a first direction in which the refrigerant pipe is coupled to the socket part and preventing the refrigerant pipe from moving in a second direction in which the refrigerant pipe is separated from the socket part, and at least one O-ring configured to prevent refrigerant from leaking at the socket part.Type: GrantFiled: February 10, 2012Date of Patent: January 6, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Sun Muk Choi, Ji Ho Kwak, Sang Yong Lee, Jae Soo Jeong, Seong Ho Kil, Seok Kyun Kim, Eun Soo Jeon
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Publication number: 20120211209Abstract: A structure to connect a refrigerant pipe and an air conditioner having the same, the connecting structure enabling a refrigerant pipe to be easily connected to an indoor unit or an outdoor unit of an air conditioner and including a refrigerant pipe through which refrigerant flows, a socket part connected to one end of the refrigerant pipe, and a coupling nut coupled to an outer circumferential surface of the socket part, wherein, a socket part is provided with a grip-ring allowing the refrigerant pipe to move in a first direction in which the refrigerant pipe is coupled to the socket part and preventing the refrigerant pipe from moving in a second direction in which the refrigerant pipe is separated from the socket part, and at least one O-ring configured to prevent refrigerant from leaking at the socket part.Type: ApplicationFiled: February 10, 2012Publication date: August 23, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sun Muk CHOI, Ji Ho KWAK, Sang Yong LEE, Jae Soo JEONG, Seong Ho KIL, Seok Kyun KIM, Eun Soo JEON
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Publication number: 20110214445Abstract: A pipe connection unit to connect a first pipe made of a first material and a second pipe made of a second material, and an air conditioner having the same. The pipe connection unit includes a first connection member fixed to the first pipe, a second connection member coupled with the first connection member, and a ferrule received in the second connection member so as to be closely fixed to the outer circumferential surface of the second pipe according to the coupling of the first connection member and the second connection member with each other, thereby simply connecting the first pipe and the second pipe through the coupling of the first connection member and the second connection member with each other.Type: ApplicationFiled: February 24, 2011Publication date: September 8, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae Oh Han, Seong Ho Kil, Ji Ho Kwak
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Patent number: D924376Type: GrantFiled: January 22, 2020Date of Patent: July 6, 2021Assignee: ESSEN TECH CO., LTD.Inventors: Ji Ho Kwak, Jung Hoon Choi, Ha Yeong Seong, Sang In Jang
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Patent number: D924377Type: GrantFiled: January 22, 2020Date of Patent: July 6, 2021Assignee: ESSEN TECH CO., LTD.Inventors: Ji Ho Kwak, Jung Hoon Choi, Ha Yeong Seong, Sang In Jang
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Patent number: D943715Type: GrantFiled: January 22, 2020Date of Patent: February 15, 2022Assignee: ESSEN TECH CO., LTD.Inventors: Ji Ho Kwak, Jung Hoon Choi, Ha Yeong Seong, Sang In Jang
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Patent number: D1005456Type: GrantFiled: January 13, 2021Date of Patent: November 21, 2023Assignee: ESSEN TECH CO., LTD.Inventors: Ji Ho Kwak, Sang In Jang, Jin Myung Hong
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Patent number: D1006200Type: GrantFiled: January 13, 2021Date of Patent: November 28, 2023Assignee: ESSEN TECH CO., LTD.Inventors: Ji Ho Kwak, Sang In Jang, Jin Myung Hong