Patents by Inventor Hai-min Lee
Hai-min 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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Publication number: 20240139669Abstract: A method for preparing hydrogen from ammonia by using pressure swing adsorption (PSA) is provided. The method for preparing hydrogen from ammonia, of the present invention, comprises the steps of: generating hydrogen and nitrogen from ammonia gas through a high-temperature reaction by using a catalyst; performing purification by selectively adsorbing unreacted ammonia gas from a gas containing unreacted ammonia and low-purity hydrogen and nitrogen, which are supplied through the high-temperature reaction and cooled; and performing purification by separating high-purity hydrogen from the gas consisting of low-purity hydrogen and nitrogen, wherein purification is carried out by using a carbon molecular sieve (CMS) adsorbent so as to desorb the unreacted ammonia gas through PSA.Type: ApplicationFiled: November 10, 2022Publication date: May 2, 2024Applicants: POSCO CO., LTD, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGYInventors: Chi-Kyu Ahn, Chang-Houn Rhee, Gook-Hee Kim, Man-Su Lee, Hai-Woong Park, Beom-Sik Kim, Seong-Min Son
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Patent number: 9544854Abstract: An apparatus and method for reducing current consumption in a portable terminal are provided, in which upon generation of a task, a controller transitions to a Virtual Maximum Clock (VMC) level and changes a clock level from the VMC level according to a load state of the controller, to process the task. Moreover, the controller changes the clock level by at least one of transition from the VMC level to an RMC level, a stepwise increase from the VMC level, a stepwise decrease from the VMC level, and a hold at the VMC level, according to the load state of the controller.Type: GrantFiled: November 28, 2011Date of Patent: January 10, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Soo-Hyung Kim, Dae-Chul Kang, Jae-Ho Hwang, Hai-Min Lee
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Patent number: 9379491Abstract: An electrical connecting device is provided, which includes a plate part fixed a first structure, and a leg extending from the plate part. When the first structure is mounted on a second structure, the leg is electrically connected to a housing part provided in the second structure.Type: GrantFiled: February 10, 2015Date of Patent: June 28, 2016Assignee: Samsung Electronics Co. Ltd.Inventor: Hai-Min Lee
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Patent number: 9140964Abstract: A projection device capable of automatically controlling on/off of a projection module for projecting display data onto an exterior surface according to an open/closed state of a cover of the projection module, and an operation method thereof are provided. The method for operating a projection module in a projection device includes turning-on the projection module when a first detection signal is detected, wherein the first detection signal is generated when a cover of the projection module is open, and after the projection module is turned on, turning-off the projection module when a second detection signal is detected, wherein the second detection signal is generated when a cover of the projection module is closed.Type: GrantFiled: April 8, 2011Date of Patent: September 22, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Young Ho Kim, Hai Min Lee
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Publication number: 20150229076Abstract: An electrical connecting device is provided, which includes a plate part fixed a first structure, and a leg extending from the plate part. When the first structure is mounted on a second structure, the leg is electrically connected to a housing part provided in the second structure.Type: ApplicationFiled: February 10, 2015Publication date: August 13, 2015Inventor: Hai-Min LEE
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Publication number: 20120239954Abstract: An apparatus and method for reducing current consumption in a portable terminal are provided, in which upon generation of a task, a controller transitions to a Virtual Maximum Clock (VMC) level and changes a clock level from the VMC level according to a load state of the controller, to process the task. Moreover, the controller changes the clock level by at least one of transition from the VMC level to an RMC level, a stepwise increase from the VMC level, a stepwise decrease from the VMC level, and a hold at the VMC level, according to the load state of the controller.Type: ApplicationFiled: November 28, 2011Publication date: September 20, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Soo-Hyung KIM, Dae-Chul KANG, Jae-Ho HWANG, Hai-Min LEE
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Publication number: 20110248983Abstract: A projection device capable of automatically controlling on/off of a projection module for projecting display data onto an exterior surface according to an open/closed state of a cover of the projection module, and an operation method thereof are provided. The method for operating a projection module in a projection device includes turning-on the projection module when a first detection signal is detected, wherein the first detection signal is generated when a cover of the projection module is open, and after the projection module is turned on, turning-off the projection module when a second detection signal is detected, wherein the second detection signal is generated when a cover of the projection module is closed.Type: ApplicationFiled: April 8, 2011Publication date: October 13, 2011Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: Young Ho KIM, Hai Min LEE
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Publication number: 20080098434Abstract: Provided are a digital broadcasting receiving device and method for audibly informing a user of a channel change. The method includes searching for channel information and channel audio guide signal premapped to the channel information, upon sensing a channel change, selecting a channel audio guide signal corresponding to the channel information, if channel information about a changed channel exists, and outputting the selected channel audio guide signal through an audio output unit. Thus, the method is capable of informing a user of a channel change by outputting a channel audio guide signal, allowing the user to audibly check a changed channel.Type: ApplicationFiled: October 12, 2007Publication date: April 24, 2008Applicant: SAMSUNG ELECTRONICS CO., LTDInventor: Hai Min LEE
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Patent number: 5931004Abstract: A refrigerator having freezing and refrigerating compartments and a refrigerating H.M. cycle and a control method therefor, comprises a compressor for compressing refrigerant, a condenser for condensing refrigerant, a capillary tube for expanding refrigerant, a first evaporator mounted in the refrigerating compartment and a second evaporator mounted in series to the first evaporator in the freezing compartment; the freezing and refrigerating compartments divided from each other to be cooled, separately, a first fan mounted in the refrigerating compartment to circulate air passing through the first evaporator, a second fan mounted in the freezing compartment to circulate air passing through the second evaporator, and a control portion for controlling the operation of the compressor and the freezing and refrigerating fans, thereby performing both compartments to be maintained at the constant temperature.Type: GrantFiled: January 17, 1997Date of Patent: August 3, 1999Assignee: Samsung Electronics Co., Ltd.Inventors: Han Joo Yoo, Jae Seung Lee, Kook Jung Suh, Hai Min Lee, Jae Hoon Lim
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Patent number: 5793023Abstract: A microwave oven includes a cooking chamber, a magnetron for performing microwave cooking, and an electric heater element disposed in the cooking chamber for performing convection heat cooking. The heating element is rotatable between vertical and horizontal positions. A heater handling device is connected to the heating element and includes a handle situated outside of the oven for enabling a user to rotate the heating element from outside of the oven.Type: GrantFiled: January 24, 1997Date of Patent: August 11, 1998Assignee: Samsung Electronics Co., Ltd.Inventors: Seok-Weon Hong, Hai-Min Lee
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Patent number: 5778688Abstract: A temperature controlling method is provided for a separate cooling refrigerator having a rotary blade in which a freezer compartment and a refrigeration compartment having the rotary blade at the rear wall thereof are separately cooled by installing an evaporator and a ventilation fan in each compartment, and a refrigerant is properly provided to each ventilation fan for the freezer and refrigeration compartments by a compressor. According to the method, a stationary angle of the rotary blade is controlled to discharge cool air into the highest-temperature portion within the refrigeration compartment, inferred by a fuzzy inference, and a cool air discharging cycle is also controlled by the compressor and the ventilation fan for the refrigeration compartment, maintaining the temperature equilibrium within the refrigeration compartment.Type: GrantFiled: April 23, 1997Date of Patent: July 14, 1998Assignee: Samsung Electronics Co., Ltd.Inventors: Hae-jin Park, Hai-min Lee, Juong-ho Kim, Soo-chul Shin, Jae-in Kim, Yun-seok Kang