baber/WOPTO huggingface dataset:
Patent KR-860000714-B1 (KR)
Title: Protection circuit for integrated circuit devices
Inventor: AVERY LESLIE R
IPC: H01L27/07
Filed: 1982-01-30
Granted: 1986-06-07
Abstract: A protection circuit is disclosed to protect circuitry inside an integrated circuit from damage due to high voltage transients. The protection circuit comprises a PNPN structure forming a silicon controlled rectifier (SCR) and a resistive element integral to the SCR structure. The SCR and the resistive element are arranged to form a two terminal protection circuit which is rendered conductive when the potential difference across the two terminals is greater than one forward biased PN junction voltage drop. In one embodiment the resistive element is a linear resistor and in another embodiment is a non-linear resistor in the form of a diode connected transistor.
Patent KR-880002296-B1 (KR)
Title: Hydrocyanation of olefins
Inventor: RAPOPORT MORRIS
IPC: B01J/
Filed: 1982-02-24
Granted: 1988-10-22
Abstract: Dinitriles, esp. adiponitriles are propd. by the continuous hydrocyanation of 3- or 4-pentenenitrile in the presence of a zero- nickel catalyst promoted with an arganoborane.  In the process, the reaction temp. is pref. 30-65↿C, and the mole ratio of HCN to 3- or 4-pentenenitrile, catalyst and promoter is each 0.18:1-0.7:1, 10:1- 116:1 and 30:1-400:1.  The catalyst is NiL4 [L=P(OAr)3, Ar=m- or P- tolryl  and the promoter is triarylborane.
Patent KR-860001224-B1 (KR)
Title: Wall-mounted fan
Inventor: IWAKI HIROSHI
IPC: F04D25/10
Filed: 1982-05-31
Granted: 1986-08-27
Abstract: The wall-mounted electric fan receives a beam control signal from the transmitter(7) which is located by remote or adhered to the stand(4). A beam receiver plate(29) in the bottom of the stand has a joint(31) to insert the transmitter and a beam detector(18) to receive control a signal from the transmitter. When the transmitter(7) is adhered to the stand, the beam receiver detector(18) can take the control signal through the beam receiver plate(29).
Patent KR-890003260-B1 (KR)
Title: Vinyl halide polymer composition with improved weather resistance and workability
Inventor: STOLOFF ALFRED
IPC: C08L101/00
Filed: 1982-11-19
Granted: 1989-08-30
Abstract: Vinyl halide polymer composition having weather-resistance and workability comprises of hydrated alumina of 0.4-0.6 micron av. particle size and impact-modifier filler.
Patent KR-880002104-B1 (KR)
Title: Telephonic communication
Inventor: BERGMANN YAN RENART
IPC: H04M/
Filed: 1983-01-31
Granted: 1988-10-15
Abstract: In order to give indentity to, and select one of a number of function units, included in a stored program controlled telecommunication system, a control unit during its control period, generates and sends to an information bus an indentification number assigned to the function unit.  The function unit uses an access signal from an addressing unit, if the control period occurs during starting the system, for actuating a register connected to the information bus and arranged in the function unit for storing the indentification number.  The function unit converts the access signal, if the control period occurs during operation of the system, to a selection signal only if the indentification number obtained from the bus agrees with that stored in the register.
Patent KR-870000375-B1 (KR)
Title: Vending machine
Inventor: TAKAKI TOSHIO
IPC: G07F13/10
Filed: 1983-02-12
Granted: 1987-03-06
Abstract: The device comprises a rotary type cup storage drum having a number of cup storage chambersd aroun its periphery for receiving different kinds of drinking cups stacked in columns. A cup takeout stage has at least two cup take-out mechanisms for supplying specific cups one by one to a vending stage according to a selection signal. A switch detects when a cup take-out stage becomes empty of cups and then rotates the cup storage drum. A cup selecting mechanism detects when a full cup storage chamber storing a certain cup type reaches a position adjacent to the empty cup take-out stage for the same type of cup, during rotation of the cut storage drum. It then stops rotation of th e drum when the position is reached.
Patent KR-920008733-B1 (KR)
Inventor: SIMMONDS JR ROBERT C
IPC: A43D11/00
Filed: 1983-12-28
Granted: 1992-10-08
Abstract: 내용 없음.
Patent KR-860000975-B1 (KR)
Title: Method of producing for polyester-polyether bock copolymer compositions
Inventor: PARK HUI-DONG
IPC: C08L67/02
Filed: 1984-02-10
Granted: 1986-07-24
Abstract: A thermal oxidn. stabilizer consisting of the phenothiazine or quinolines compds. of formula(I), sulphurous compd. having a formula of R3-S-R4, and phenolic compd. of formula(II) was mixed with polyester-polyether copolymers to produce polyesterpolyether block copolymers. The said block copolymers have a thermal oxidn. resistivity. Where R1 is 0 - 15C alkyl or aryl; R' is the same as R1 or 1 - 18C hydrocarbon contg. a radical of -COO-, -CO-, or -CONH-; m is 1 - 3 integer; R3 is 2 - 25C hydrocarbons; R4 is H or R3 ; R2 is 1 - 11C hydrocarbon which is cycloalkyl or contains -S- or -CONH- ; n is 1 - 3 integer.
Patent KR-840001540-B1 (KR)
Title: Apparatus for preliminary formation of cushion material
Inventor: DAKAGI SADAKI
IPC: D04H13/00
Filed: 1984-07-09
Granted: 1984-10-04
Abstract: Appts. consists of a filament fiber(F) supplying device(11), a filament fiber(F) transporting device(12), and a scrapping device(13). A pre-formed cushion is produced from an aggregate of short synthetic fiber filaments, which have been curled or looped in three dimensions. The cshion may adopt a complex shape and varying stiffness, but maintains an uniform visible density.
Patent KR-840001786-B1 (KR)
Title: Method of producing for ethylene copolymer
Inventor: LEE KUI-HEE
IPC: C08F210/16
Filed: 1984-08-30
Granted: 1984-10-20
Abstract: Ethylene copolymers having good mech. and optical properties are prepd. using an Al-Mg-Ti catalyst system impregnated on fine particles of porous SiO2. Thus, 27.7g TiCl4 was added over 0.5hr to 41.8g MgCl2 in 2.5L THF. Then 500g SiO2, dehydrated at 600-800oC and treated with 1-8% AlEt3, was added to the above soln. The compn. was dried to a freeflowing powder. The catalyst was partially activated with trihexylaluminum and completely activated with AlEt3. 1-Bute-ne-ethylene copolymer film prepd. using the catalyst was free og gels and foreign particles.
Patent KR-870001571-B1 (KR)
Title: Process for crystalisation of sodium 5-gualynate
Inventor: KIM SONG-BAE
IPC: C07H1/02
Filed: 1984-11-09
Granted: 1987-09-04
Abstract: 5'-guanylic acid disodium (GMP2Na). 7H2O is crystallized by using a Na-phosphate salt and a hydrophillic organic solvent. Thus, a soln. of 5g Na2H2PO4 in 500ml of 25% GMP2Na soln. is adjusted with NaOH to pH8.2 and mixed with 500ml MeOH(99%) and a small amt. of GMP2Na.7H2O as crystall nucleus to give 162 g columnar crystal of GMP2Na.7H2O.
Patent KR-890003345-B1 (KR)
Title: Amorphous ni alloy for electric resistance
Inventor: PARK TAE-SOK
IPC: C22C19/05
Filed: 1984-11-26
Granted: 1989-09-18
Abstract: An electrical resistor of high electrical resistivity and low temperature coefficient of resistivity has a composition comprising an amorphous Ni-Cr-B-Si alloy consisting essentially of, by atomic %, (a) 81-x% Ni, x% Cr, 6% B and 13% Si wherein x=0-25, or (b) 70% Ni, 11% Cr, 19-y% b and y% Si wherein y=0-19 except 13, or (c) 100-z% 0.864 Ni and 0.136 Cr, and z% of 0.316 B and 0.684 Si wherein z=15-25 except 19.
Patent KR-910000721-B1 (KR)
Inventor: MICHAEL GRANT SCOTT
IPC: G02B6/44
Filed: 1984-12-05
Granted: 1991-01-31
Abstract: 내용 없음.
Patent KR-920001043-B1 (KR)
Title: Citric acid esters as blowing agents for working up plastics
Inventor: KRETZSCHMANN GUNTHER
IPC: C08J9/08
Filed: 1985-03-27
Granted: 1992-02-01
Abstract: The invention relates to new blowing and nucleating agents for the processing of plastics, which are based on mono- and diesters of citric acid.
Patent KR-870001980-B1 (KR)
Title: Textile goods for weather proof
Inventor: SHIN YONG-HWAN
IPC: C08K3/14
Filed: 1985-04-04
Granted: 1987-10-24
Abstract: An luterlining foam sheet for leisure or military clothes having the property of buoyancy, waterproof and coldproof is made by following processes; 1) first foaming process by mixing and heating low density polyethylene, foaming agent, surface active agent, and parting compound, 2) secondary foaming process by injecting pressurised free gas, 3) forming this material to sheet shape by a pressing roller.
Patent KR-930001000-B1 (KR)
Inventor: GOLUB GREGORY J
IPC: H01H21/40
Filed: 1985-04-30
Granted: 1993-02-12
Abstract: 내용 없음.
Patent KR-880002020-B1 (KR)
Title: Jointing method and means for biared pipes
Inventor: CHOE HUN
IPC: F16L27/00
Filed: 1985-07-26
Granted: 1988-10-12
Abstract: A pair of flanges (3) with an intermediate member (9) may be bolted for use in an eccentric pipe fitting.  Each flange has a joining head (5) with a through-hole (7) for pipe-lines.  This through-hole is eccentrically formed from the center point of the flange at a distance of one half (D/2) of eccentric distance (D) of two pipes.  A counter-seat (8) with a radius of the distance from the center point of the flange to the farthest outer surface of the eccentric pipe is formed around the through-hole on the inside surface of each flange. The intermediate member has a through-hole (10) with a diameter of the distance from the farthest outer surface of the pipe to that of the other eccentric pipe.
Patent KR-900000937-B1 (KR)
Title: Preparation of urethane resins containing hydrolyzable moieties from organosilnae compounds
Inventor: CHANG WEN-SHYAN
IPC: C08G18/83
Filed: 1986-04-30
Granted: 1990-02-19
Abstract: Ungelled urethane resins useful in low temp. coating compsns., comprise a urethane compd. having at least one Si-contg. group of formular (I), (II) or (III; Q=residue from a urethane polyol; R(independently)=H, C1-10 joined to Si through an Si-C linkage; Y= an easily hydrolyzable group.  The ratio of number of g of ungelled urethane compsn. to equivs. of easily hydrolyzable Y groups is from 40-667.  Non-aq. compsns. comprises ungelled urethane resin compsn.
Patent KR-890002151-B1 (KR)
Title: Preparation method of synthetic zeolite from halloysite and bentonite
Inventor: JONG PIL-JO
IPC: B01J20/16
Filed: 1986-05-28
Granted: 1989-06-21
Abstract: A method for prepg. high purity and high quality synthetic zeolite (below 200 ppm of Fe content, above 90 of the deg. of whiteness (Hunter color Test) and below 3 micrometer of av. particle size) comprises (i) acid-treating halloysite and bentonite with 10-80 wt.% HCl or HNO3, (ii) removing dissolved-matter and (iii) alk.-treating with 8-40 wt.% KOH, NaOH or NH4OH.
Patent KR-950013905-B1 (KR)
Inventor: KATO YASABURO
IPC: H04N5/365
Filed: 1986-10-31
Granted: 1995-11-17
Abstract: 내용 없음.
Patent KR-940009046-B1 (KR)
Inventor: DORER CASPER J JR
IPC: C10L1/222
Filed: 1986-11-07
Granted: 1994-09-29
Abstract: 내용 없음.
Patent KR-900003824-B1 (KR)
Title: Method of producing composition boards laminate
Inventor: KLEBSH WILHELM
IPC: B29C48/08
Filed: 1986-11-07
Granted: 1990-05-31
Abstract: A process for the production of composite plates from which bath tub inserts can be made by deep drawing, wherein a support of acrylonitrile-butadiene-styrene (ABS) and a coating directly adjoining the same of polymethylmethacrylate (PMMA, acrylic glass) are co-extruded through a wide slot nozzle, characterised in that the acrylic glass forming the coating has a melting index MFI 230≰C 3.8 in accordance with DIN 53735 of a most 2.0 (Pref. 1) and that the acrylic glass and ABS forming the support are brought together directly before the intake of the wide-slot nozzle through different passages, the width of which approximately corresponds to that of the wide-slot nozzle.
Patent KR-900009178-B1 (KR)
Inventor: SATTO TOSHIFUMI
IPC: H04W52/02
Filed: 1987-01-10
Granted: 1990-12-24
Abstract: 내용 없음.
Patent KR-900006256-B1 (KR)
Title: Optical disk revival units
Inventor: YAMADA JIRO
IPC: G11B27/10
Filed: 1987-05-21
Granted: 1990-08-27
Abstract: The optical disc player comprises an input unit (11) for entering a desired reproduction time during which music on an optical disc is to be reproduced. A memory unit (13) stores data corresponding to the desired user selected reproduction time. A disc play-back unit (15) controls the position of a pick-up device for reproduction of the music on the disc. A timer unit (14) counts the time elapsed from the start of the reproduction of the optical disc. A logic processing unit (12) compares the desired reproduction time stored in the memory unit with the time counted by the timer unit, and issues a control signal to the disc reproduction unit for stopping the reproduction of the optical disc when the elapsed time coincides with the desired reproduction time.
Patent KR-900003417-B1 (KR)
Title: Polyurethanes prepared from liquid crystalcoontaining polyols
Inventor: THOMAS OOMMAN P
IPC: C08L75/02
Filed: 1987-06-25
Granted: 1990-05-18
Abstract: A soln. or colloidal dispersion is claimed of a liq. crystalline polymer in an active hydrogen-contg. cpd. having an average of at least two active H-contg. moieties. Also claimed is a polyurethane and or polyurea polymer prepd. by reacting a polyisocyacate with the soln. or colloidal dispersion. The active H-contg. cpd. pref. contains at least two OH gps. or prim. or sec. amine gps., and pref. comprises (i) a polyether polyol of ave. equiv. wt. 800-3000 and ave. functionality 2-4 and a glycol or aromatic amine chain extender; or (ii) a cpd. of ave. equiv. wt. of 31-400 and ave. functionality 3-8. The polymer soln. or dispersion is useful for polyurethane and or polyurea foams, esp flexible foams.
Patent KR-930010301-B1 (KR)
Inventor: ABE MASAAKI
IPC: B05C19/00
Filed: 1987-07-27
Granted: 1993-10-16
Abstract: 내용 없음.
Patent KR-930001699-B1 (KR)
Inventor: SAKASHITA TAKESHI
IPC: C08F20/28
Filed: 1987-12-29
Granted: 1993-03-11
Abstract: 내용 없음.
Patent KR-920006988-B1 (KR)
Inventor: SHIBATA RYOICHI
IPC: G03G15/20
Filed: 1988-04-22
Granted: 1992-08-24
Abstract: 내용 없음.
Patent KR-910003749-B1 (KR)
Title: Building method of retaining wall
Inventor: PARK NO-CHEOL
IPC: E02D29/02
Filed: 1988-05-11
Granted: 1991-06-10
Abstract: The retaining wall is  constructed  by  piling  up  synthetic resin bags filled with cement mortar through openings (2)  into  a wall slructure.  This  method  is  advantageous  for  a  pressing construction of the retaining wall in a short construction time.
Patent KR-900007650-B1 (KR)
Title: Highly shrinkable acrylic filament yarn and process for producing the same
Inventor: NISHIMURA MAGOTO
IPC: D02G1/02
Filed: 1988-08-24
Granted: 1990-10-17
Abstract: Highly shrinkable acrylic filament yarn exhibits (a) a deg. of shrinking 20% or more in boiling water; (b) max. heat shrinking stress of 0.15 g per d or more in a dry heating atmos. and (c) Young's modulus of 280 Kg per sq. mm or more after free shrinking treatment in boiling water. Pref. temp. in (b) is 90-130 deg.C. Opt. yarn is coloured and can have crimps and false twists. The obtd. filament yarn can be blended with other yarns or fabrics to form twisted yarns, combined filament yarns, union woven fabrics or union knitted fabrics.
Patent KR-940000556-B1 (KR)
Inventor: TAKAYAMA MUNEHIRO
IPC: C02F1/20
Filed: 1988-10-13
Granted: 1994-01-24
Abstract: 내용 없음.
Patent KR-920000889-B1 (KR)
Title: Preparation method of beta-sialon sintered body
Inventor: PARK YONG-GAB
IPC: C04B35/58
Filed: 1989-02-18
Granted: 1992-01-30
Abstract: High  strength  sintered  beta  sialon  containing  aluminum nitride poly type 21R or 15R is produced by nitriding with  AlN  1 mol,  SiO2  0.2-4  mol,  and  Al2O3  0.05  mol  in  the   nitrogen atmosphere; beta sialon  is  pressurelessly  sintered  with  Si3N4 61-88 wt.%, Al2O3 2.5-9 wt.%,  and  Y2O3  6-15  wt.%,  adding  AlN polytype 21R 3.5-10 wt.%  in  the  same  atmosphere  at  1750-1850 deg.C; By thermal treatment of  the  sintered  body  at  1200-1400 deg.C, the crystalline phase of Yttrium aluminum oxide Y4Al2O9  is deposited.
Patent KR-920003803-B1 (KR)
Inventor: CLIFORD TERECK W
IPC: C07D211/88
Filed: 1989-03-22
Granted: 1992-05-15
Abstract: 내용 없음.
Patent KR-0133924-B1 (KR)
Inventor: SCHURTER WALTER
IPC: A01N63/00
Filed: 1989-05-19
Granted: 1998-04-20
Abstract: 내용 없음.
Patent KR-920001392-B1 (KR)
Title: A road boundary block and method for making it
Inventor: LEE KEUN-HUI
IPC: E01C11/22
Filed: 1989-05-30
Granted: 1992-02-13
Abstract: The invention provides a road boundary block which has a high strength and a high deformation resistance. The  material  of  the block is composed of: 30-90 weight % of clay (A); and 10-70 weight % of sand (B) having a particle diameter of 0.1-2 mm. The  mixture of the two ingredients is molded into the shape of the  block  and subjected to a natural drying starting from  a  water  content  of 80-90%, and then, a surface agent is glazed on the naturally dried block surface. Then the blocks  are  baked  at  a  temperature  of 800-1500 degree C,  thereby completing the manufacture of the road boundary block.
Patent KR-970001030-B1 (KR)
Inventor: WATANABE SYUJI
IPC: A47L5/36
Filed: 1989-10-05
Granted: 1997-01-25
Abstract: 내용없음.
Patent KR-920001206-B1 (KR)
Title: Method of seasoninged tangle
Inventor: CHOI YOUNG-JA
IPC: A23L17/60
Filed: 1989-10-13
Granted: 1992-02-06
Abstract: A process for preparing seasoned brown seaweed comprises: (a) cutting stem of brown seaweed (I) into the size of 1-10  mm  width and 2-10 mm length; (b) mixing 70 wt.% cut (I) with 3  %  agar,  3 wt.% silium, 8 wt.% sea tangle and 2 wt.%  deumbug,  and  washing; (c) steaming it at 80 deg.C  for  50  sec.  and  dehydrating;  (d) mixing the dehydrated (I) with pigment to obtain  the  green  (I); (e) washing, dehydrating, and mixing with 0.92  wt.%  sesame  oil, 1.2 wt.% sesame, 0.192 wt.% red pepper, 0.834  wt.%  sugar,  0.192 wt.% chemical condiment, 3.193 wt.% edible oil,  1.538  wt.%  salt and 1.92 wt.% vinegar to  obtain  the  final  product.  The  obtd. product has a good taste.
Patent KR-940000052-B1 (KR)
Inventor: MANUSCH CHRISTOPH
IPC: B65H37/00
Filed: 1989-11-04
Granted: 1994-01-05
Abstract: 내용 없음.
Patent KR-0157610-B1 (KR)
Inventor: COSSEMENT ERIC
IPC: C07D207/27
Filed: 1989-11-23
Granted: 1998-11-16
Abstract: 내용 없음.
Patent KR-950012350-B1 (KR)
Title: Blasting-speed-detecting apparatus
Inventor: JON CHAN-OK
IPC: F42C21/00
Filed: 1990-04-24
Granted: 1995-10-17
Abstract: a start switch to which a 5V is applied, connected to an ignition signal generator and a first flip-flop, the output terminal of the first flip-flop connected to one terminal of the a first AND gate; an offset adjusting circuit for applying an output signal to an inverse terminal of a comparison amplifier as a voltage converting circuit and a photodiode, respectively, the output terminal of the photodiode connected to non-inverse terminal of the comparison amplifier and simultaneously the output terminal of the voltage converting circuit connected to a comparison circuit; the comparison circuit for applying the output signal to the other terminal of the first AND gate through a second flip-flop; a second AND gate whose input terminal is connected to an oscillating circuit and the first AND gate and whose output terminal is connected to a counter; a display device for displaying a counter signal from the counter by the operation of a display drive circuit; and a reset switch which is connected to reset terminals of the first and second flip-flops.
Patent KR-930002076-B1 (KR)
Title: Paper binder making process
Inventor: KIM CHANG-KYU
IPC: D21H17/28
Filed: 1990-05-25
Granted: 1993-03-26
Abstract: The polymeric paper-strengthening agent is  produced  by  (a) adding an alkali solution or an organic acid to  250  parts  of  a formalin to regulate pH at 4-10, (b)  adding  15-100  parts  of  a water- soluble starch to the regulated solution, and  reacting  the mixture at 50-100 deg.C to  regulate  pH  at  8-10.5,  (c)  adding 50-100 parts of an urea or a melamine to the  regulated  solution, and reacting the mixture at  50-100  deg.C  for  20-90  min.,  (d) adding an organic acid to the reactant  to  regulate  pH  at  3-6, reacting the mixture for 5-60 min., and then neutralizing it  with an alkali solution, and (e) removing  a  non-reactant.  The  agent provides a compressive and bursting strength for papers.
Patent KR-940005007-B1 (KR)
Inventor: UENO MASAJI
IPC: H03K5/26
Filed: 1990-09-14
Granted: 1994-06-09
Abstract: 내용 없음.
Patent KR-930009771-B1 (KR)
Inventor: COOKE KEVIN K
IPC: G06F1/16
Filed: 1990-10-19
Granted: 1993-10-11
Abstract: 내용 없음.
Patent KR-930009849-B1 (KR)
Title: Memorized phone number displaying and automatic dialing method
Inventor: LEE JONG-U
IPC: H04M1/27
Filed: 1990-11-20
Granted: 1993-10-12
Abstract: The  multifunctional  telephone  for  storing  received  dial digits during absence  includes  a  communication  controller  for connecting a station to a communication circuit, a  DTMF  receiver for converting a DTMF dial signal into binary data, a voice mixing circuit for voice-mixing an input vocal instruction message  data, a display for displaying telephone numbers, and  a  microprocessor having a built-in memory so that a control signal is generated for every ring detection signal. The  voice  mixing  circuit  operates whenever the communication circuit is connected  to  the  station, dialing  signals  are  sequentially  stored,  the  stored  dialing signals are sequentially displayed on  the  display,  the  control signal is output in response to  a  service  key,  and  a  dialing signal  selected  is   transmitted   to   the   station,   thereby automatically storing and dialing telephone numbers.
Patent KR-930011560-B1 (KR)
Inventor: TAKAHASHI AKIRA
IPC: F02D41/14
Filed: 1989-10-31
Granted: 1993-12-11
Abstract: 내용 없음.
Patent KR-970009490-B1 (KR)
Inventor: AKATSUKA MINORU
IPC: G02F1/139
Filed: 1990-03-26
Granted: 1997-06-13
Abstract: 내용 없음.
Patent KR-960004960-B1 (KR)
Title: Multi-ported and multi-directional loud speaker system
Inventor: JUNG JIN-KON
IPC: H04R1/28
Filed: 1991-04-29
Granted: 1996-04-18
Abstract: The speaker has at least one horn(10) on its back to collect sound and modify the direction of sound so as to reproduce Hi-Fi sound effectively without pressure at the backside of the speaker and sound reflection in the speaker box. The horn which conveys sound to the front or the side is made to be attachable to the support. The performance of the speaker with the horns is equivalent to the performance of 2 - 6 units of speakers without horns.
Patent KR-940005728-B1 (KR)
Title: Compound semiconductor device and making method thereof
Inventor: IN YANG-HO
IPC: H01L27/06
Filed: 1991-06-08
Granted: 1994-06-23
Abstract: The compound semiconductor includes a field effect transistor (FET) and a light emitting diode (LED) in one chip. The method for manufacturing the compound semiconductor comprises the steps of: (a) forming a first to a fourth semiconductor layers on a substrate; (b) forming grooves except on a FET and a LED regions; (c) forming a second conduction type diffusion region on a LED region; (d) forming a first and a second conduction type electrode on a fourth semiconductor layer and a second type diffusion region respectively; (e) forming a source and a drain on a FET region; (f) exposing a third semiconductor layer by etching a fourth semiconductor layer between a source and a drain; and (g) forming a gate on the exposed third semiconductor layer.
Patent KR-940008605-B1 (KR)
Inventor: LOMET DAVID B
IPC: G06F12/00
Filed: 1991-06-14
Granted: 1994-09-24
Abstract: 내용 없음.
Patent KR-960009117-B1 (KR)
Title: Process for the preparation of symmetric form n,n'-substitute aromatic urea
Inventor: LEE SANG-MOO
IPC: C07C275/30
Filed: 1991-06-24
Granted: 1996-07-13
Abstract: Aromatic urea of formula (I) is prepared by reacting aromatic mono nitro compound, aromatic primary amine and synthetic gas of H2/CO with a ratio of 0.2-2 atms and at 5-100 in the presence of a palladium catalyst and halogen-containing ammonium salt or phosphonium salt in a nonpolar solvent 50-200deg.C.