Patents Assigned to R. F. Tech Co., Ltd
  • Patent number: 10551873
    Abstract: According to various embodiments of the present disclosure, a docking station includes a base housing comprising a first surface having a recessed portion, a second surface directed in an opposite direction to the first surface, and a side surface at least partially surrounding a space between the first surface and the second surface, a slide housing slidably mounted on the recessed portion to open and close at least a part of the recessed portion, and a connection member disposed on the recessed portion, in which as the slide housing slides, the connection member is hidden or exposed, and in a state where the at least the part of the recessed portion is opened, the slide housing is positioned inclined with respect to the first surface or the second surface. The docking station described above may be implemented variously depending on embodiments.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: February 4, 2020
    Assignees: Samsung Electronics Co., Ltd., R.F. Tech Co., Ltd.
    Inventors: Yong-Hwa Han, Sang-Jun Ahn, Chung-Keun Yoo, Ui-Jin Lee, Sang-Hyun Lee
  • Patent number: 10048433
    Abstract: A flat panel lighting apparatus, which makes it easy to replace a circuit board with LEDs thereon, is provided. The flat panel lighting apparatus includes a backplate, a driving unit, a light guide plate, a frame, a bracket, a circuit board, a connector and a cable connecting the driving unit and the circuit board. The frame with an opening portion is disposed at an outer periphery of the backplate and the light guide plate. The bracket is detachably coupled to the opening portion of the frame. The circuit board with light sources, is disposed in a space between the frame and the light guide plate, and is replaceable in a sliding type through the opening portion of the frame when the bracket is decoupled from the frame. The connector has a female terminal attached to the circuit board and a male terminal detachably coupled to the female terminal.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: August 14, 2018
    Assignee: R.F.TECH CO., LTD
    Inventors: Min Chul Kim, Jung Hoon Kim, Dong Pil Choi, Min Wook Kwon, Hyun Joong Kim, Jun Jea Park, Jun Young Ko
  • Patent number: 9581319
    Abstract: The present invention provides an LED bulb using heat dissipating LED driver capable of reducing heat influence by disposing an electrolytic capacitor in an output part at a low temperature region through disposing a section receiving an external power close to a light generating module and disposing a section controlling a light emitting diode dose to a power source base.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 28, 2017
    Assignee: R.F. TECH CO., LTD
    Inventors: Won Kim, Min-Chul Kim, Min-Wook Kwon, Jun-Young Ko, Kyoung-Min Park, Jung-Hoon Kim
  • Publication number: 20150377471
    Abstract: The present invention provides an LED bulb using heat dissipating LED driver capable of reducing heat influence by disposing an electrolytic capacitor in an output part at a low temperature region through disposing a section receiving an external power close to a light generating module and disposing a section controlling a light emitting diode dose to a power source base.
    Type: Application
    Filed: March 14, 2013
    Publication date: December 31, 2015
    Applicant: R.F.TECH CO., LTD.
    Inventors: Won KIM, Min-Chul KIM, Min-Wook KWON, Jun-Young KO, Kyoung-Min PARK, Jung-Hoon KIM
  • Patent number: 9037200
    Abstract: Various embodiments of an antenna device for a wireless terminal are disclosed. The antenna device includes a radiator configured to be extracted from/retracted into the wireless terminal, a L-C lumped circuit, and a noise removing coil coupled between the radiator and the L-C lumped circuit, to attenuate noise introduced through the radiator. The radiator may be configured as a helical coil or at least one meandering printed pattern so as to reduce its overall length while maintaining a desired electrical length. In embodiments, the antenna device is useful for UHF/VHF frequency bands. Multi-band configurations are disclosed. In one embodiment, a stainless steel tube member substantially surrounds a helical coil, and the tube member operates at a lower frequency band than the helical coil.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: May 19, 2015
    Assignees: Samsung Electronics Co., Ltd., R.F. Tech Co., Ltd.
    Inventors: Jun Yoon, Jong-Un Park
  • Publication number: 20130252678
    Abstract: Various embodiments of an antenna device for a wireless terminal are disclosed. The antenna device includes a radiator configured to be extracted from/retracted into the wireless terminal, a L-C lumped circuit, and a noise removing coil coupled between the radiator and the L-C lumped circuit, to attenuate noise introduced through the radiator. The radiator may be configured as a helical coil or at least one meandering printed pattern so as to reduce its overall length while maintaining a desired electrical length. In embodiments, the antenna device is useful for UHF/VHF frequency bands. Multi-band configurations are disclosed. In one embodiment, a stainless steel tube member substantially surrounds a helical coil, and the tube member operates at a lower frequency band than the helical coil.
    Type: Application
    Filed: March 20, 2013
    Publication date: September 26, 2013
    Applicants: R.F. TECH CO., LTD., Samsung Electronics Co., Ltd.
    Inventors: Jun YOON, Jong-Un PARK
  • Patent number: 7166987
    Abstract: Disclosed herein is a portable charger for a mobile phone. The portable charger includes a front housing, a rear housing, a belt clip, a fastening unit, a pair of clamps, a release button, an interface connector, a secondary battery and a charge control unit. The portable charger is easy to carry, can easily charge the battery of the mobile phone with direct current power charged in a secondary battery, and can simultaneously charge the secondary battery and the battery of the mobile phone using a travel adaptor.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: January 23, 2007
    Assignee: R. F. Tech Co., Ltd
    Inventors: Kyung-Sang Lee, Jung-Woo Lee, Moon-Young Chai