Patents by Inventor Sung-Gyoo Lee
Sung-Gyoo Lee 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: 7982682Abstract: An antenna apparatus includes: a substrate; an RF ground conductor which is branched to extend in at least two directions and at least a part of which is formed on a surface of the substrate, the RF ground conductor functioning as an antenna ground plane; and an antenna portion, one end of which is connected to the RF ground conductor.Type: GrantFiled: June 29, 2007Date of Patent: July 19, 2011Assignee: Mitsubishi Materials CorporationInventors: Sung-Gyoo Lee, Masahiko Nakamura, Eiichirou Hirose, Koji Yanao
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Patent number: 7937825Abstract: A surge protector coated with an oxide layer having an excellent chemical stability at the high temperature range and excellent adherence with respect to main discharge electrodes. The surge protector includes a column-shaped ceramic member that has a conductive film divided by a discharge gap interposed therebetween; a pair of main discharge electrode members opposite to each other on both ends of the column-shaped ceramic member to come in contact with the conductive film; and a cylindrical ceramic tube which is fitted to the pair of main discharge electrode members opposite to each other to seal both the column-shaped ceramic member and sealing gas inside thereof. Oxide films are formed on main discharge surfaces of at least the protrusive supporting portions of the pair of main discharge electrode members opposite to each other, by performing an oxidation treatment, respectively.Type: GrantFiled: April 21, 2008Date of Patent: May 10, 2011Assignee: Mitsubishi Materials CorporationInventors: Yasuhiro Shato, Tsuyoshi Ogi, Miki Adachi, Sung-Gyoo Lee, Takashi Kurihara, Toshiaki Ueda
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Patent number: 7733622Abstract: This surge absorber includes an insulating part upon which is formed a conductive layer which is divided into two separate portions by a discharge gap (micro gap) around its circumferential surface; a pair of terminal electrodes which are arranged to oppose the insulating part, and contacts the conductive layer; an insulating tube at the ends of which the terminal electrodes are arranged, and which seals the insulating part in its interior along with seal gases; and a conductive portion provided at least between the terminal electrodes and the conductive layer. As a result, it becomes possible to provide a surge absorber of lower cost, and which is endowed with stabilized performance and high quality, while moreover it exhibits excellent durability.Type: GrantFiled: February 27, 2004Date of Patent: June 8, 2010Assignee: Mitsubishi Materials CorporationInventors: Toshiaki Ueda, Miki Adachi, Yasuhiro Shato, Tuyoshi Ogi, Takashi Kurihara, Sung-Gyoo Lee
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Patent number: 7660095Abstract: A surge protector coated with an oxide layer having an excellent chemical stability at the high temperature range and excellent adherence with respect to main discharge electrodes. The surge protector includes a column-shaped ceramic member that has a conductive film divided by a discharge gap interposed therebetween; a pair of main discharge electrode members opposite to each other on both ends of the column-shaped ceramic member to come in contact with the conductive film; and a cylindrical ceramic tube which is fitted to the pair of main discharge electrode members opposite to each other to seal both the column-shaped ceramic member and sealing gas inside thereof. Oxide films are formed on main discharge surfaces of at least the protrusive supporting portions of the pair of main discharge electrode members opposite to each other, by performing an oxidation treatment, respectively.Type: GrantFiled: July 13, 2004Date of Patent: February 9, 2010Assignee: Mitsubishi Materials CorporationInventors: Yasuhiro Shato, Tuyoshi Ogi, Miki Adachi, Sung-Gyoo Lee, Takashi Kurihara, Toshiaki Ueda
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Publication number: 20090273535Abstract: An antenna apparatus includes: a substrate; an RF ground conductor which is branched to extend in at least two directions and at least a part of which is formed on a surface of the substrate, the RF ground conductor functioning as an antenna ground plane; and an antenna portion, one end of which is connected to the RF ground conductor.Type: ApplicationFiled: June 29, 2007Publication date: November 5, 2009Inventors: Sung-Gyoo Lee, Masahiko Nakamura, Eiichirou Hirose, Koji Yanao
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Publication number: 20080222880Abstract: A surge protector coated with an oxide layer having an excellent chemical stability at the high temperature range and excellent adherence with respect to main discharge electrodes. The surge protector includes a column-shaped ceramic member that has a conductive film divided by a discharge gap interposed therebetween; a pair of main discharge electrode members opposite to each other on both ends of the column-shaped ceramic member to come in contact with the conductive film; and a cylindrical ceramic tube which is fitted to the pair of main discharge electrode members opposite to each other to seal both the column-shaped ceramic member and sealing gas inside thereof. Oxide films are formed on main discharge surfaces of at least the protrusive supporting portions of the pair of main discharge electrode members opposite to each other, by performing an oxidation treatment, respectively.Type: ApplicationFiled: April 21, 2008Publication date: September 18, 2008Applicant: Mitsubishi Materials CorporationInventors: Yasuhiro Shato, Tuyoshi Ogi, Miki Adachi, Sung-Gyoo Lee, Takashi Kurihara, Toshiaki Ueda
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Publication number: 20070285866Abstract: This surge absorber includes an insulating part upon which is formed a conductive layer which is divided into two separate portions by a discharge gap (micro gap) around its circumferential surface; a pair of terminal electrodes which are arranged to oppose the insulating part, and contacts the conductive layer; an insulating tube at the ends of which the terminal electrodes are arranged, and which seals the insulating part in its interior along with seal gases; and a conductive portion provided at least between the terminal electrodes and the conductive layer. As a result, it becomes possible to provide a surge absorber of lower cost, and which is endowed with stabilized performance and high quality, while moreover it exhibits excellent durability.Type: ApplicationFiled: February 27, 2004Publication date: December 13, 2007Applicant: Mitsubishi Materials CorporationInventors: Toshiaki Ueda, Miki Adachi, Yasuhiro Shato, Tuyoshi Ogi, Takashi Kurihara, Sung-Gyoo Lee
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Publication number: 20070058317Abstract: A surge protector coated with an oxide layer having an excellent chemical stability at the high temperature range and excellent adherence with respect to main discharge electrodes. The surge protector includes a column-shaped ceramic member that has a conductive film divided by a discharge gap interposed therebetween; a pair of main discharge electrode members opposite to each other on both ends of the column-shaped ceramic member to come in contact with the conductive film; and a cylindrical ceramic tube which is fitted to the pair of main discharge electrode members opposite to each other to seal both the column-shaped ceramic member and sealing gas inside thereof. Oxide films are formed on main discharge surfaces of at least the protrusive supporting portions of the pair of main discharge electrode members opposite to each other, by performing an oxidation treatment, respectively.Type: ApplicationFiled: July 13, 2004Publication date: March 15, 2007Applicant: Mitsubishi Materials CorporationInventors: Yasuhiro Shato, Tuyoshi Ogi, Miki Adachi, Sung-Gyoo Lee, Takashi Kurihara, Toshiaki Ueda