Patents by Inventor Il Nam
Il Nam 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: 20030054792Abstract: An active tunable filter circuit for use as an integratable active filter in a mobile radio apparatus, comprises an active amplifier circuit (A) including a reactive feedback network including a first tunable element (L1) set to pass with amplification a wanted input signal, and a passive resonant circuit (P) coupled to the active amplifier circuit and including an inductive element (LFB, L3 or L4) and an inactive semiconductor element (FET2, FET3 or FET4) having an interelectrode capacitance which in operation resonates with the inductive element at a harmonic of the wanted signal. In one configuration (FIG. 1) the circuit comprises a band pass filter with amplification and in another configuration (FIG. 6-not shown) the circuit comprises a harmonic notch filter with amplification.Type: ApplicationFiled: September 10, 2002Publication date: March 20, 2003Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventor: Sueng-il Nam
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Publication number: 20030045252Abstract: A radio frequency power amplifier (16) for use in at least 2 frequency bands, comprises a power amplifier (32) having a passive adjustable input matching network (30), a passive variable output power matching network (34, 36) and a source (48) of tuning voltages for adjusting the input and output networks so that the power amplifier functions as a narrowband amplifier in a predetermined one of the at least 2 frequency bands. The source of tuning voltages may comprise a look-up table.Type: ApplicationFiled: August 26, 2002Publication date: March 6, 2003Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventor: Sueng-il Nam
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Publication number: 20020082438Abstract: The present invention relates to a process for preparing organochlorosilanes and more particularly, to the process for preparing organochlorosilanes of formula I by a dehydrohalogenative coupling of hydrochlorosilanes of formula II with organic halides of formula III in the presence of quaternary phosphonium salt as a catalyst to provide better economical matter and yield compared with conventional methods, because only catalytic amount of phosphonium chloride is required and the catalyst can be separated from the reaction mixture and recycled easily, 1Type: ApplicationFiled: August 1, 2001Publication date: June 27, 2002Inventors: Il-Nam Jung, Bok-Ryul Yoo, Joon-Soo Han, Seung-Hyun Kang
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Patent number: 6392077Abstract: The present invention relates to a process for preparing organochlorosilanes and more particularly, to the process for preparing organochlorosilanes of R4R3CHSiR1Cl2 (I) by a dehydrohalogenative coupling of hydrochlorosilanes of HSiR1Cl2 (II) with organic halides of R2R3 CHX (III) in the presence of quaternary phosphonium salt as a catalyst to provide better economical matter and yield compared with conventional methods, because only a catalytic amount of phosphonium chloride is required and the catalyst can be separated from the reaction mixture and recycled easily.Type: GrantFiled: August 1, 2001Date of Patent: May 21, 2002Assignee: Korea Institute of Science and TechnologyInventors: Il-Nam Jung, Bok-Ryul Yoo, Joon-Soo Han, Seung-Hyun Kang
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Patent number: 6360552Abstract: The present invention relates to a freezing system having two vaporizers for a refrigerator constructed as a single-loop cycle which is capable of using a genuine coolant as well as a mixed coolant by providing the coolant to a compressor after mixing the each coolant passed through a freezing chamber vaporizer and a chilling chamber vaporizer and heightening the pressure.Type: GrantFiled: October 19, 2000Date of Patent: March 26, 2002Assignee: LG Electronics Inc.Inventors: Won Hee Lee, Il Nam Hwang
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Publication number: 20010016014Abstract: A short range communications system in which transmitted signals are distorted by multipath effects and non-linear characteristics of circuit elements and cause constellation errors in a received signal. These errors are determined by a receiving transceiver (TR′) which transmits a control signal to a transmitting transceiver (TR). The control signal is applied to a stage (12) to adjust the magnitude of input baseband data prior to modulation in a modulator (14) to predistort the constellation of the modulated signals in such a way that the distortion is effectively eliminated in propagation.Type: ApplicationFiled: February 1, 2001Publication date: August 23, 2001Applicant: U.S. PHILIPS CORPORATIONInventor: Sueng-il Nam
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Publication number: 20010015999Abstract: A communication system comprises a wireless local area network (LAN) formed by a plurality of spacially separated transceivers (TR, TR′). Each of the transceivers has a transmitting section (10) for transmitting data by a combination of dual code spread spectrum techniques and a receiving section (12) for recovering the data. The receiving comprises a plurality of diversity antennas (ANT 1 to ANTn), an adaptive forward equal gain combiner (60) having a plurality of branches (62 to 74 and 62′ to 74′), each branch being coupled to a respective one of said diversity antennas, an in-phase splitter (92) for splitting an output from the combiner into two output channels, means (94 to 98) for demodulating the signals in the output channels, means (104 to 108) for correlating the signals in each of the output channels with respective ones of the dual spreading codes and means (110) for recovering data from the correlated signals.Type: ApplicationFiled: February 1, 2001Publication date: August 23, 2001Applicant: U.S. PHILIPS CORPORATIONInventor: Sueng-Il Nam
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Publication number: 20010015994Abstract: A communication system comprises a wireless local area network (LAN) formed by a plurality of spacially separated transceivers (TR, TR′). Each of the transceivers has a transmitting section (10) for transmitting data by a combination of dual code spread spectrum techniques with transmit diversity. More particularly an input data stream is split into quadrature related channels (I,Q). Each of the channels comprises a frequency up-converter (42, 44, 46), a spread spectrum stage (50, 52) for spreading the up-converted channel signal by a respective one of two parallel produced PN codes (PN1, PN2) and an antenna (18, 20) for propagating its respective spread spectrum signal, the antennas (18, 20) being located where convenient in the coverage area of the respective transmitting section.Type: ApplicationFiled: February 1, 2001Publication date: August 23, 2001Applicant: U.S. PHILIPS CORPORATIONInventor: Sueng-il Nam
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Patent number: 6265217Abstract: A method for producing the bulbs of Garlic with saving the cost for producing them and enhancing the work efficiency and the yield by dark-culturing and/or liquid media-culturing of the garlic tissues in vitro is provided, which comprises the steps of: a) isolation and excision of the virus-free tissues in the length of 0.2 to 0.3 mm obtained from the meristem of parent body of garlic; b) inoculating the excised tissues from the meristem tissue of garlic onto the solid-type primary media; c) culturing the tissues inoculated onto the solid-type primary media under the light condition at 25° C.Type: GrantFiled: March 1, 2000Date of Patent: July 24, 2001Assignee: Tong Yang Moolsan Company LimitedInventors: Kyung Ho Chung, Sang Il Nam
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Patent number: 6256065Abstract: Solid state image pickup device in which a horizontal charge coupled device (HCCD) region is divided into multi-channels so as to improve efficiency of charge-transferring and to widen its dynamic range is disclosed, including a plurality of photoelectric conversion regions; vertical charge coupled device (VCCD) regions for transferring in a vertical direction image charge generated in the photoelectric conversion regions; horizontal charge coupled device (HCCD) regions for dividing the image charge into one channel or two channel according to a level of the image charge transferred in a vertical direction and for transferring it in a horizontal direction; and a floating diffusion region for sensing only the image charge transferred through any one of the channels of the HCCD regions and draining the image charge transferred through the other channel without sensing it.Type: GrantFiled: January 23, 1998Date of Patent: July 3, 2001Assignee: Hyundai Electronics Industries Co., Ltd.Inventor: Il Nam Hwang
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Patent number: 6251057Abstract: The present invention relates to methods for making the compounds of formula I which is a dehydrohalogenative coupling of hydrochlorosilanes of formula II with organic halides of formula III in the presence of a Lewis base catalyst. R3CH2SiR1Cl2 (I) HSiR1Cl2 (II) R2CH2X (III) In formulas I and II, R1 represents a hydrogen, chloro, or methyl; in formula III, X represents a chloro or bromo; in formula III, R2 can be selected from the group consisting of a C1-17 alkyl, a C1-10 fluorinated alkyl with partial or full fluorination, a C1-5 alkenyl groups, a silyl group containing alkyls, (CH2)nSiMe3-mClm wherein n is 0 to 2 and m is 0 to 3, aromatic groups, Ar(R′)1 wherein Ar is C6-14 aromatic hydrocarbon, R′ is a C1-4 alkyl, halogen, alkoxy, or vinyl, and q is 0 to 5, a haloalkyl group, (CH2)pX wherein p is 1 to 9 and X is a chloro or bromo; or an aromatic hydrocarbon, Ar CH2X wherein Ar is C6-14 aromatic hydrocarbon and X is a chloro or bromo.Type: GrantFiled: April 5, 2000Date of Patent: June 26, 2001Assignee: Korea Institute of Science and TechnologyInventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Seung-Hyun Kang, Yeon Seok Cho
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Patent number: 6087521Abstract: The present invention is organosilicon compounds described by formula (1) ##STR1## and formula (2) ##STR2## were R.sup.1 is selected from the group consisting of hydrogen, dichlorosilyl, trichlorosilyl, methyldichlorosilyl, dimethylchlorosilyl, and trimethylsilyl, each R.sup.2, R.sup.3, and R.sup.4 are independently selected from the group consisting of hydrogen, chlorine, alkoxy radicals comprising 1 to about 12 carbon atoms, aryloxy radicals comprising up to about 12 carbon atoms, aryl radicals comprising up to about 12 carbon atoms, and saturated hydrocarbon radicals comprising 1 to about 12 carbon atoms, and n=2 to 6; and methods for the making of organosilicon compounds described by formulas (1) and (2).Type: GrantFiled: May 17, 1999Date of Patent: July 11, 2000Inventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Weon Cheol Lim
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Patent number: 6078069Abstract: A bidirectional horizontal charge transfer device and method includes a charge transfer area formed within a substrate, a plurality of first, second, third and fourth poly gates formed over the charge transfer area,an insulating layer formed between the first, second, third and fourth poly gates, a first clock signal applied to the first and second poly gates, a second clock signal applied to the third and fourth poly gates, and a biasing circuit for selectively applying a bias signal to the first and second clock signals so as to selectively change a charge transfer direction.Type: GrantFiled: January 14, 1998Date of Patent: June 20, 2000Assignee: LG Semicon Co, Ltd.Inventors: Jee Sung Yoon, Il Nam Hwang
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Patent number: 6022987Abstract: Aryl substituted alkylsilanes represented by the formula I and a preparation method thereof by reacting substituted benzenes represented by the formula II with aryl substituted alkylsilanes represented by the formula III in the presence of Lewis acid catalysts such as aluminum chloride: ##STR1## wherein m, p, and q are 0 or 1, respectively; n and y are 0, 1, or 2, respectively; X.sup.1, X.sup.2, X.sup.3, X.sup.4, and X.sup.5 which are same or different represent hydrogen, fluoro, chloro; R represents C.sub.1 -C.sub.12 alkyl group; provided that if n is 0, m is 0 and if n is 1 or 2, at least two of X.sup.1, X.sup.2, X.sup.3, X.sup.4, and X.sup.5 represent chloro or fluoro group.Type: GrantFiled: December 23, 1997Date of Patent: February 8, 2000Assignee: Korea Institute of Science and TechnologyInventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Yeon Seok Cho
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Patent number: 5998649Abstract: The invention is cyclic organosilicon compounds described by formula ##STR1## and by formula ##STR2## and linear organosilicon compounds by formula ##STR3## and by formula ##STR4## where R.sup.1 is selected from the group consisting of hydrogen, dichlorosilyl, trichlorosilyl, methyldichlorosilyl, dimethylchlorosilyl, and trimethylsilyl, and each R.sup.2 is independently selected from the group consisting of hydrogen, alkyls comprising one to about 6 carbon atoms, and aryls; and methods for making the described cyclic organosilicon compounds and linear organosilicon compounds.Type: GrantFiled: May 17, 1999Date of Patent: December 7, 1999Inventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Weon Cheol Lim
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Patent number: 5970809Abstract: A transmission device for farm tractors is disclosed. In the transmission device, a hollow travelling drive shaft and a PTO drive internal shaft are substituted for a typical hollow PTO drive shaft and travelling internal shaft, respectively. The transmission device also has a splined flange for directly transmitting the engine power from the flywheel to the PTO drive internal shaft. In a main change gear unit, a hub sleeve and a main gear shifting shaft are forged into a single structure. A super low-speed change gear unit is connected to a sub-change gear through two sets of shafts capable of allowing the super low-speed change gear unit to be independently operated from the sub-speed change gear unit. The transmission device is thus selectively operated without performing any super low-speed changing action.Type: GrantFiled: June 2, 1998Date of Patent: October 26, 1999Assignee: Tongyang Moolsan Co., Ltd.Inventors: Yo Sang Nam, Young Sun Kang, Gye Yong Song, Sang Il Nam, Sam Suk Jung
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Patent number: 5965762Abstract: New chlorohydrosilane derivatives having the general formula (I) and preparation method thereof. The chlorohydrosilane derivatives (I) of the present invention which have both Si--Cl and Si--H bonds are prepared by partially reducing chlorosilane of the formula (II) which have at least two Si--Cl bonds with lithiumaluminum hydride. The chlorohydrosilane derivatives (I) of the present invention, which have both Si--H and Si--Cl bonds in a molecule can be advantageously used in preparing various compounds because a Si--H bond enables the hydrosilylation with unsaturated organic compounds, while a Si--Cl bond can participate in hydrolysis or in a reaction with a nucleophilic compound such as Grignard reatent: ##STR1## wherein R.sup.1 is straight, branched, or cyclic alkyl group having 1 to 30 carbon atoms, which can include an aromatic group or heterocyclic group, and R.sup.Type: GrantFiled: July 9, 1998Date of Patent: October 12, 1999Assignee: Korea Institute of Science and TechnologyInventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Weon-Cheol Lim
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Patent number: 5862197Abstract: A charge coupled device having a CCIR/EIA mode conversion function includes: a plurality of VCCD regions formed in the direction of row, the VCCD regions having a predetermined interval from one another; a plurality of HCCD regions formed at the end of the VCCD regions in the direction of column; a plurality of photodetectors regularly arranged between the VCCD regions, the photodetectors generating signal charges according to an image signal; a plurality of vertical gate electrodes formed on the VCCD regions and the photodetectors in the direction of column, the vertical gate electrodes transmitting the signal charges of the photodetectors to the HCCD regions through the VCCD regions according to applied vertical clock signals; vertical clock signal generator for supplying a predetermined number of vertical clock signals; and a selecting portion for receiving vertical clock signals from the vertical clock signal generator, the selecting portion supplying the vertical clock signals to part of the vertical gatType: GrantFiled: June 6, 1997Date of Patent: January 19, 1999Assignee: LG Semicon Co., Ltd.Inventors: Sung Hyuk Yoon, Il Nam Hwang
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Patent number: 5847182Abstract: The present invention relates to fluorenyl substituted organosilanes represented by the formula I and preparation methods thereof by reacting substituted biphenyls represented by the formul II with (dichloroalkyl)silanes represented by the formul III in the presence of Lewis acid catalysts such as aluminum chloride: ##STR1## (wherein m is 0 or 1 and n is 0, 1, or 2. y1 and y2 represent hydrogen, bromo, phenyl and they can be same or different. R represents hydrogen or methyl group. R.sub.j.sup.- can be dichloromethyl, 2,2-dichloroethyl, 3,3-dichloropropyl, 1,2-dichloroethyl, 2,3-dichloropropyl, 2,3-dichlorobutyl).Type: GrantFiled: March 19, 1998Date of Patent: December 8, 1998Assignee: Korea Institue of Science and TechnologyInventors: Il Nam Jung, Bok Ryul Yoo, Joon Soo Han, Yeon Seok Cho
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Patent number: 5773324Abstract: A bidirectional horizontal charge transfer device and method includes a charge transfer area formed within a substrate, a plurality of first, second, third and fourth poly gates formed over the charge transfer area, an insulating layer formed between the first, second, third and fourth poly gates, a first clock signal applied to the first and second poly gates, a second clock signal applied to the third and fourth poly gates, and a biasing circuit for selectively applying a bias signal to the first and second clock signals so as to selectively change a charge transfer direction.Type: GrantFiled: July 30, 1996Date of Patent: June 30, 1998Assignee: LG Semicon Co., Ltd.Inventors: Jee Sung Yoon, Il Nam Hwang