Patents by Inventor Myung-jong Kwon
Myung-jong Kwon 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: 20120189489Abstract: A complex metal oxide catalyst having a composition including about 5 to about 75 wt % of manganese (Mn); about 5 to about 55 wt % of copper (Cu); and about 3 to about 60 wt % of an active compound, based on a total weight of the complex metal oxide catalyst. The complex metal oxide catalyst has excellent low-temperature activity and improved catalyst efficiency so as to be repeatedly used, and thus is effectively used in a filter module and an air cleaner.Type: ApplicationFiled: January 20, 2012Publication date: July 26, 2012Applicant: Samsung Electronics Co., Ltd.Inventors: Myung-jong Kwon, Sik-sun Choi, Duck-hee Lee, Jun-cheol Bae, Hae-ree Joo, Do-hoon Kim, Sang-woong Kim, Sang-hyun Park, Chang-ick Lee
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Patent number: 7481942Abstract: An ink-jet printhead and a method of manufacturing the same include a substrate on which a heater and a passivation layer protecting the heater are formed, a passage plate on which an ink chamber corresponding to the heater and an ink passage connected to the ink chamber are formed, and a nozzle plate in which an orifice corresponding to the ink chamber is formed. An exposure stop layer (ESL) that blocks passage of a photosensitive energy is formed inside the nozzle plate, and the nozzle plate and the passage plate are bonded with each other by the exposure stop layer (ESL).Type: GrantFiled: April 25, 2003Date of Patent: January 27, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-sik Min, Byung-ha Park, Myung-jong Kwon, Young-shik Park, Yun-gi Kim
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Patent number: 7175257Abstract: An ink-jet printhead and a manufacturing method thereof include a substrate on which an ink chamber having a predetermined volume is formed, a passage for supplying ink to the ink chamber which is formed on a bottom of the ink chamber, a nozzle plate which includes a nozzle corresponding to a center of the ink chamber and at least two insulating layers formed on the substrate, a bubble guide formed inside the nozzle plate and extending from the nozzle into the ink chamber, and a heater which surrounds the nozzle and is disposed between the two insulating layers. A hydrophobic coating layer is formed on a surface of a uppermost layer of the nozzle plate, and a droplet ejecting portion that has a diameter smaller than that of the nozzle of the nozzle plate and is disposed on the same axis as the nozzle, is formed in the hydrophobic coating layer.Type: GrantFiled: November 17, 2005Date of Patent: February 13, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Byung-ha Park, Seo-hyun Cho, Myung-jong Kwon, Yong-shik Park, Kyong-il Kim, Jae-sik Min
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Patent number: 7153633Abstract: An ink-jet printhead includes a substrate on which an ink chamber is formed, and a nozzle plate to cover the ink chamber, having a nozzle through which ink droplets are ejected from the ink chamber, and formed of a stack of a multi-layer insulating layer. The ink-jet printhead also includes a heater buried in the nozzle plate to surround the nozzle, an interconnection layer buried in the nozzle plate to electrically connect to the heater, and a coating layer formed of photoresist on the nozzle plate and having a through hole-type droplet guide connected to the nozzle of the nozzle plate. The droplet guide is formed through the coating layer, which has a sufficient thickness, and enables a meniscus of ink to be rapidly restored and stabilized, and ink droplets to be ejected at a high speed and high frequency. Also, the ink-jet printhead has improved resistance to abrasion and chemicals.Type: GrantFiled: March 24, 2005Date of Patent: December 26, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-sik Min, Seo-hyun Cho, Byung-ha Park, Myung-jong Kwon, Kyong-il Kim, Yong-shik Park
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Publication number: 20060066672Abstract: An ink-jet printhead and a manufacturing method thereof include a substrate on which an ink chamber having a predetermined volume is formed, a passage for supplying ink to the ink chamber which is formed on a bottom of the ink chamber, a nozzle plate which includes a nozzle corresponding to a center of the ink chamber and at least two insulating layers formed on the substrate, a bubble guide formed inside the nozzle plate and extending from the nozzle into the ink chamber, and a heater which surrounds the nozzle and is disposed between the two insulating layers. A hydrophobic coating layer is formed on a surface of a uppermost layer of the nozzle plate, and a droplet ejecting portion that has a diameter smaller than that of the nozzle of the nozzle plate and is disposed on the same axis as the nozzle, is formed in the hydrophobic coating layer.Type: ApplicationFiled: November 17, 2005Publication date: March 30, 2006Inventors: Byung-ha Park, Seo-Hyun Cho, Myung-jong Kwon, Yong-shik Park, Kyong-il Kim, Jag-sik Min
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Patent number: 6994422Abstract: An ink-jet printhead and a manufacturing method thereof include a substrate on which an ink chamber having a predetermined volume is formed, a passage for supplying ink to the ink chamber which is formed on a bottom of the ink chamber, a nozzle plate which includes a nozzle corresponding to a center of the ink chamber and at least two insulating layers formed on the substrate, a bubble guide formed inside the nozzle plate and extending from the nozzle into the ink chamber, and a heater which surrounds the nozzle and is disposed between the two insulating layers. A hydrophobic coating layer is formed on a surface of a uppermost layer of the nozzle plate, and a droplet ejecting portion that has a diameter smaller than that of the nozzle of the nozzle plate and is disposed on the same axis as the nozzle, is formed in the hydrophobic coating layer.Type: GrantFiled: November 20, 2002Date of Patent: February 7, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Byung-ha Park, Seo-hyun Cho, Myung-jong Kwon, Yong-shik Park, Kyong-il Kim, Jae-sik Min
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Publication number: 20050162469Abstract: An ink-jet printhead includes a substrate on which an ink chamber is formed, and a nozzle plate to cover the ink chamber, having a nozzle through which ink droplets are ejected from the ink chamber, and formed of a stack of a multi-layer insulating layer. The ink-jet printhead also includes a heater buried in the nozzle plate to surround the nozzle, an interconnection layer buried in the nozzle plate to electrically connect to the heater, and a coating layer formed of photoresist on the nozzle plate and having a through hole-type droplet guide connected to the nozzle of the nozzle plate. The droplet guide is formed through the coating layer, which has a sufficient thickness, and enables a meniscus of ink to be rapidly restored and stabilized, and ink droplets to be ejected at a high speed and high frequency. Also, the ink-jet printhead has improved resistance to abrasion and chemicals.Type: ApplicationFiled: March 24, 2005Publication date: July 28, 2005Applicant: Samsung Electronics Co., Ltd.Inventors: Jae-sik Min, Seo-hyun Cho, Byung-ha Park, Myung-jong Kwon, Kyong-il Kim, Yong-shik Park
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Patent number: 6880919Abstract: An ink-jet printhead includes a substrate on which an ink chamber is formed, and a nozzle plate to cover the ink chamber, having a nozzle through which ink droplets are ejected from the ink chamber, and formed of a stack of a multi-layer insulating layer. The ink-jet printhead also includes a heater buried in the nozzle plate to surround the nozzle, an interconnection layer buried in the nozzle plate to electrically connect to the heater, and a coating layer formed of photoresist on the nozzle plate and having a through hole-type droplet guide connected to the nozzle of the nozzle plate. The droplet guide is formed through the coating layer, which has a sufficient thickness, and enables a meniscus of ink to be rapidly restored and stabilized, and ink droplets to be ejected at a high speed and high frequency. Also, the ink-jet printhead has improved resistance to abrasion and chemicals.Type: GrantFiled: April 2, 2003Date of Patent: April 19, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-sik Min, Seo-hyun Cho, Byung-ha Park, Myung-jong Kwon, Kyong-il Kim, Yong-shik Park
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Publication number: 20040035823Abstract: An ink-jet printhead and a method of manufacturing the same include a substrate on which a heater and a passivation layer protecting the heater are formed, a passage plate on which an ink chamber corresponding to the heater and an ink passage connected to the ink chamber are formed, and a nozzle plate in which an orifice corresponding to the ink chamber is formed. An exposure stop layer (ESL) that blocks passage of a photosensitive energy is formed inside the nozzle plate, and the nozzle plate and the passage plate are bonded with each other by the exposure stop layer (ESL).Type: ApplicationFiled: April 25, 2003Publication date: February 26, 2004Applicant: SAMSUNG Electronics Co., Ltd.Inventors: Jae-Sik Min, Byung-Ha Park, Myung-Jong Kwon, Young-Shik Park, Yun-Gi Kim
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Patent number: 6676244Abstract: A bubble-jet type inkjet printhead is disclosed, wherein a manifold for supplying ink, an ink chamber having a substantially hemispherical shape and filled with ink to be ejected, and an ink channel for supplying ink from the manifold to the ink chamber, are incorporated in a substrate. A nozzle plate having a nozzle, through which ink is ejected at the center of the ink chamber, is formed on the substrate. A heater is provided on the nozzle plate and surrounding the nozzle, and electrodes are provided on the nozzle plate and electrically connected to the heater to supply pulse current to the heater. An anti-wetting coating including a perfluorinated alkene compound on at least a surface around the nozzle is formed on an exposed surface of the printhead. Preferably, the anti-wetting coating is deposited by RF glow discharge and can be removed by O2 plasma.Type: GrantFiled: August 9, 2002Date of Patent: January 13, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Myung-jong Kwon, Yong-soo Oh, Seog Soon Baek
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Publication number: 20030210299Abstract: An ink-jet printhead includes a substrate on which an ink chamber is formed, and a nozzle plate to cover the ink chamber, having a nozzle through which ink droplets are ejected from the ink chamber, and formed of a stack of a multi-layer insulating layer. The ink-jet printhead also includes a heater buried in the nozzle plate to surround the nozzle, an interconnection layer buried in the nozzle plate to electrically connect to the heater, and a coating layer formed of photoresist on the nozzle plate and having a through hole-type droplet guide connected to the nozzle of the nozzle plate. The droplet guide is formed through the coating layer, which has a sufficient thickness, and enables a meniscus of ink to be rapidly restored and stabilized, and ink droplets to be ejected at a high speed and high frequency. Also, the ink-jet printhead has improved resistance to abrasion and chemicals.Type: ApplicationFiled: April 2, 2003Publication date: November 13, 2003Inventors: Jae-sik Min, Seo-hyun Cho, Byung-ha Park, Myung-jong Kwon, Kyong-il Kim, Yong-shik Park
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Publication number: 20030197762Abstract: An ink-jet printhead and a manufacturing method thereof include a substrate on which an ink chamber having a predetermined volume is formed, a passage for supplying ink to the ink chamber which is formed on a bottom of the ink chamber, a nozzle plate which includes a nozzle corresponding to a center of the ink chamber and at least two insulating layers formed on the substrate, a bubble guide formed inside the nozzle plate and extending from the nozzle into the ink chamber, and a heater which surrounds the nozzle and is disposed between the two insulating layers. A hydrophobic coating layer is formed on a surface of a uppermost layer of the nozzle plate, and a droplet ejecting portion that has a diameter smaller than that of the nozzle of the nozzle plate and is disposed on the same axis as the nozzle, is formed in the hydrophobic coating layer.Type: ApplicationFiled: November 20, 2002Publication date: October 23, 2003Applicant: Samsung Electronics Co., Ltd.Inventors: Byung-ha Park, Seo-hyun Cho, Myung-jong Kwon, Yong-shik Park, Kyong-il Kim, Jae-sik Min
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Publication number: 20030030697Abstract: A bubble-jet type inkjet printhead is disclosed, wherein a manifold for supplying ink, an ink chamber having a substantially hemispherical shape and filled with ink to be ejected, and an ink channel for supplying ink from the manifold to the ink chamber, are incorporated in a substrate. A nozzle plate having a nozzle, through which ink is ejected at the center of the ink chamber, is formed on the substrate. A heater is provided on the nozzle plate and surrounding the nozzle, and electrodes are provided on the nozzle plate and electrically connected to the heater to supply pulse current to the heater. An anti-wetting coating including a perfluorinated alkene compound on at least a surface around the nozzle is formed on an exposed surface of the printhead. Preferably, the anti-wetting coating is deposited by RF glow discharge and can be removed by O2 plasma.Type: ApplicationFiled: August 9, 2002Publication date: February 13, 2003Inventors: Myung-jong Kwon, Yong-soo Oh, Seog Soon Baek