baber/WOPTO huggingface dataset:
Patent KR-820000133-B1 (KR)
Title: Removal iron for silica sand
Inventor: KO J
IPC: C01B33/158
Filed: 1979-08-06
Granted: 1982-02-20
Abstract: This invention is a method for efficiently removing iron content in silica sand for glass-making.  Silica sand is dropped on a conveyor belt having thick standing fur on its surface.  A part of the iron in the silica sand is absorbed into the standing fur by the force of a magnet installed on the reverse side of the ascending belt.  By brushing the surface of the descending belt, iron content absorbed in the standing fur is eliminated.
Patent KR-830001157-B1 (KR)
Title: 전기작동식 응축액 배출밸브
IPC: F16T1/00
Filed: 1979-11-24
Granted: 1983-06-16
Abstract: 내용 없음.
Patent KR-810000614-B1 (KR)
Title: Process for preparing antidote
Inventor: KIM YONG EUN
Filed: 1980-06-23
Granted: 1981-06-07
Abstract: An antidote for detoxication of pesticidal poison was prepd. from herb medicines.  Thus, mixt. A contg. oak leaf powder 70, juniper leaf or root powder 20, orange peel powder 50, arrowroot powder 2.5, liquorice powder 2.5 wt.% and water was stirred on the water bath at 40-60≰C for 5-6 hrs. to give extracted soln. composition of extracted soln. 3 and mixt.  A 1 was extracted by vacuum boiling and decomposition to give extract. glycerine 0.5 wt. % was suspended in the extract to give an antidote.
Patent KR-850001208-B1 (KR)
Title: Process for preparing 17 -acyloxy-5 -corticoids and 17 -acyloxy-5 -corticoids
Inventor: AYER DONALD EMORY
IPC: C07J5/00
Filed: 1981-01-30
Granted: 1985-08-20
Abstract: The title compds. (I; R2 = H, F, Cl or Me; R6 = H, F, Cl or Me; R7 = H, F or Cl; R9 = H, F or Cl; R11 = Cl, O or OH; R16α  = H, F, Cl, or Me; R17 = C1-6 alkyl, Ph, P-methylphenyl, Pcarboxyphenyl or P- carboalkoxyphenyl; R21 = H, F, Cl, Br, -OR21 , or -OSO2CH3; R21  = H, -COR21b or -PO(OH)2; R21b = C1-6 alkyl, ph, p-methylphenyl or p- carboxyphenyl, p-carboalkoxy phenyl, or -CH2CH2COOH), useful as antiinflammatory agents with good sepn. between topical and systemic activity, were prepd. by the hydrogenation of II in the presence of a hydrogenating catalyst.
Patent KR-870001377-B1 (KR)
Title: Phosphoanhydrite process
Inventor: PALMER JAY WARD
IPC: C01B25/16
Filed: 1982-12-14
Granted: 1987-07-24
Abstract: An improved wet process for the prepn. of phosphoric acid and CaSO4 comprises (A) slurring of powdered phosphate rock(PR), sulfuric acid, water and anhydrite seed crystals at 60-110 deg. C [the slurry contains sulfuric acid of 1-4 wt.% and phosphoric acid of 62-73wt.% as a total acid content, the wt. ratio of powdered (PR) to anhydrite is 1:10-100, total solid content is 20-50% , (B) recovering produced conc. phosphoric acid after sepn. of phosphoric acid and slurry having anhydrite through the 1st filtering-separator and (C) recirculating anhydrite slurry into the mixing container.
Patent KR-850000124-B1 (KR)
Title: Control system of robot
Inventor: KIM JONG-SHIK
IPC: B25J13/00
Filed: 1983-04-30
Granted: 1985-02-27
Abstract: An educational robot consists of a microprocessor (300), a 2 ms timer (308) that supplies the interrupt signal to (300), a command decoder (301) to analyze the command, memories (302, 305), a motor driver (303), an interface (304), and a programming devide (306) that is coupled to the command decoder through the data bus (309) and commands the position or performance of the robot. The programming device consists of the lamp driver (402), a performance controller (401), a scanning and error detector (403), a 7-segment lamp (405), a data output controller (404), and a keyboard (407).
Patent KR-900004724-B1 (KR)
Title: Semiconductor device of three dimensional structore
Inventor: MIYAO MASINOBU
IPC: H01L27/00
Filed: 1983-06-16
Granted: 1990-07-05
Abstract: Three dimensional semiconductor device has a single crystal (50) substrate with a number of MOS transistors in the planar and vertical direction. A transistor can be formed using a doped region (111) as a gate and doped region (108, 109) in an underlying semiconductor region (72), as drain and source regions. A transistor can also be formed using another doped region (112) as a gate also using the same doped regions (108, 109) as the drain and source. The doped regions (108, 109, 110) can also be used as gates. Uppermost doped regions (114, 115) can be used as gates and lowermost ones (102, 103) as source or drain regions, intermediate regions (104, 105, 113) being used as both gates and the source or drain regions.
Patent KR-860000568-B1 (KR)
Title: Method for manufacturing beverage from gynostema pentaphyllum
Inventor: KO YONG-NAM
IPC: A23F3/24
Filed: 1984-06-14
Granted: 1986-05-17
Abstract: Tea was prepd. from Dol-oe(Gynostemma pentaphyllum). Thus, stalks and leaves or only leaflets of Gynostemma pentaphyllum were havested, washed, sliced at the size of 2 - 3 cm, and dried at inlet and exit temp. 20≰C and 90≰C to give 30 % dried materials. 10 kg Dried materials were toasted 10 - 20 min at 100 - 170 ≰C in a cooker with an agitator, and crushed to give 70 % Dol-oe tea. This tea contained saponin component.
Patent KR-910005849-B1 (KR)
Title: Methods of preparation of piridazino (4,3-c) isoquinoline derivatives
Inventor: TOJA EMILIO
IPC: C07D471/04
Filed: 1984-07-11
Granted: 1991-08-05
Abstract: The present invention is directed to pyridazino[4,3-c]isoquinolines of Formula I   <IMAGE> I  wherein R represents methyl, phenyl or substituted phenyl groups, R1 represents inter alia amino or substituted amino, alkoxy or cycloalkoxy groups, having pharmacological activity, to process for preparing them and to the pharmaceutical compositions containing them. The compounds of the invention possess anti-anxiety activity.
Patent KR-910007792-B1 (KR)
Title: Automatic system for driving licence test
Inventor: KIM CHANG-JONG
IPC: G07C1/00
Filed: 1984-10-16
Granted: 1991-10-02
Abstract: The system for deciding success or failure in driving  tests, automatically transmits  the  result  score  marked  for  each  of cpurses  to  the  host   computer,  computerises  and  priots  out final total score in a short time.  The  circuit   of  the  system comprises photo sensors (1),(1') for detecting entry or passing of a vehicle, pressure sensors (2),(2') for detecting  deviation   of a vehicle;  an interfacing circuit  (3)  for  processing  signals from the sensors to logic signals and transmits logic  signals  to controller; a controller  (4)   for   computerizing  the  signals, deciding success or failure in the test, transmitting the resultto the host computer (5), simultaneously supplying the result to  the circuit  (3) and turning on lamp (6) for displaying the failure.
Patent KR-890005056-B1 (KR)
Title: Input method of hand scanner
Inventor: ISIKAKI DOSINORI
IPC: H04N1/107
Filed: 1985-07-03
Granted: 1989-12-08
Abstract: The Input system has the contiunous marks on a medium having an image or images such as characters or graphic patterns being read by the scanner.  The data processor including a microcomputer reads the image and the mark scanned, and the microcomputer eliminates overlapping of the pieces of image data in accordance with the data representing the mark.
Patent KR-920007191-B1 (KR)
Title: Manufacturing method of semiconductor elements
Inventor: AN DONG-JUN
IPC: H01L21/302
Filed: 1985-07-25
Granted: 1992-08-27
Abstract: The  method  for  producing  a   semiconductor   device   is characterized by forming a metal layer (4),  which  least  two  of projecting parts (3) is formed  on  an  oxide  film  (2),  on  the substrate (1), forming a passivation layer (5) on the metal  layer (4), etching the passivation layer  (5')  on  the  region  of  the projection parts (3), a silicon oxide layer  (2')  and  a  bonding pad, and detecting a final etching time by observing an  intrinsic color of the oxide film (2).
Patent KR-940004986-B1 (KR)
Inventor: OTOMO SHIGEKATSU
IPC: G11B5/187
Filed: 1985-08-21
Granted: 1994-06-09
Abstract: 내용 없음.
Patent KR-890005185-B1 (KR)
Inventor: KIM KI-SOK
IPC: E03B7/10
Filed: 1986-02-11
Granted: 1989-12-16
Abstract: 내용 없음.
Patent KR-940009587-B1 (KR)
Inventor: TOMPKINS ELIOT N
IPC: H04N7/14
Filed: 1986-04-08
Granted: 1994-10-15
Abstract: 내용 없음.
Patent KR-900004211-B1 (KR)
Title: Apparatus for preparing optical fiber preform
Inventor: UCHIYAMA NOBUHITDO
IPC: C03B37/018
Filed: 1986-06-10
Granted: 1990-06-18
Abstract: A device for mfg. a preform of an optical fibre includes a holder for rotatably supporting a reaction tube, a portion for supplying a material through an end of the reaction tube, and a heater which reciprocates in an axial direction of the reaction tube to heating the tube. It further comprises a chamber on the other end of the reaction tube and includes a pressure detector, an inlet and an exhaust port of the gas, and a blower connected to the chamber. It is capable of controlling the pressure of gas introduced in response to detected pressure of the gas in the chamber. This device is suitable for mfr. of a preform of an optical fibre having little variation of outside dia. by MCVD method.
Patent KR-880001701-B1 (KR)
Title: Polyester's yarn making method
Inventor: CHONG SU-SONG
IPC: D02G3/24
Filed: 1986-12-16
Granted: 1988-09-07
Abstract: The polyester yarn were prepd. by spining in the shape of a bi-metal or eccentrically polyester of two kinds which have different heat shrinkage to each other.  Then the polyester yarn was drawn at lower temp. than Tg and 3.019-(795X10-6)S<=drawing ratio<= 3.608-(927X10-6)S (where, S is 1000-2500 m/min).  The drawn polyester yarn was treated finally at >=100≰C to improve crimp tendency.  Where, non-shrinkage ratio of first polyester compsn. and second polyester compsn. were<=10% and >=20%, respectively, and the mixing ratio of the two polyester compsn. was 30:70-50:50.
Patent KR-890003983-B1 (KR)
Title: Document frame & editing method in memory typewriter
Inventor: RHO MAN-EUNG
IPC: B41J5/30
Filed: 1986-12-31
Granted: 1989-10-14
Abstract: The typerwriter includes a PROM (90) having programs available to typing and editing the document and a DEC (100) for transmitting the selecting signal of peripheral controller and memory by receiving ADL signal.  The method comprises a first process for typing the document regardless to size of document and RAM (110) capacity utilizing management directory comprising the management and document areas, a second process for transmtting the document from the first process stored in disk to RAM (110) and for editing with the management directory, and a third process for effective usage of disk by erasing the unnecessary document with the management directory.
Patent KR-960000827-B1 (KR)
Title: Optical head devices for use in disk players
Inventor: GODA YOSHIMASA
IPC: G11B7/08
Filed: 1987-03-12
Granted: 1996-01-13
Abstract: An optical head device for use in a disc player has a light beam generating and detecting unit (50) for generating a light beam emerging therefrom and detecting a light beam coming thereto from the outside, an objective lens driving unit (40) for supporting an objective lens (16) and moving it in both a first direction along an optical axis of the objective lens (16) and a second direction substantially perpendicular to the first direction, and an interchangeable movable base member (30A) for supporting the light beam generating and detecting unit (50) and the objective lens driving unit (40) so that the light beam emerging from the light beam generating and detecting unit (50) is incident through a predetermined path upon the objective lens (16) supported by the objective lens driving unit (50).
Patent KR-910000704-B1 (KR)
Inventor: OKAMOTO MASANORI
IPC: H04N1/032
Filed: 1987-03-27
Granted: 1991-01-31
Abstract: 내용 없음.
Patent KR-900000694-B1 (KR)
Title: Laser cutting device using optical sensor
Inventor: LEE MYONG-WOO
IPC: H01S3/10
Filed: 1987-04-18
Granted: 1990-02-03
Abstract: The machine utilizing a photo sensor for non-contacting detection of the shape of a material includes a photo sensor (1) comprising resisters (R1,R2), a light emission diode (D2), a light accepting diode (D2) and a transister (Q2) which output currents are determined by the output current of the light accepting diode, a sensor height adjuster (11) for adjusting the minute height of the sensor, and a controller (2) for controlling the intensity of the laser beam according to the level of the current of the light accepting diode (D2).
Patent KR-920007631-B1 (KR)
Inventor: NAGAI ISAMU
IPC: G01L5/10
Filed: 1987-05-08
Granted: 1992-09-09
Abstract: 내용 없음.
Patent KR-900008367-B1 (KR)
Title: Data compression picture coding system
Inventor: SIN MYUNG-CHUL
IPC: G06T9/00
Filed: 1987-05-29
Granted: 1990-11-17
Abstract: A coding system compresses the picture data and eliminates the redundancy of the picture signal using the method of absolute movement block truncation coding. The system includes four line buffers to store the black, white and colour picture data for at least four lines, a data processor to calculate an average and an absolute first moment for a corresponding  block from the received black, white and colour data and to make a bit plane, field buffers to store the processed black, white and colour data in the field group, and an output section for outputting the composite video signal after adjusting the output of the field buffers.
Patent KR-900005333-B1 (KR)
Title: Inorganic matter analysis instrument using glow discharge lamping under atmosphere
Inventor: YANG KUN-YOUNG
IPC: G01N21/62
Filed: 1987-08-28
Granted: 1990-07-27
Abstract: Beam splitter (37) splits variable wavelength laser from laser (31) into two laser beams for standard and analysis. The apparatus measures element concentration by comparing intensities of two beans. Glow discharge lamping (GDL)(38) of the apparatus, consists of trigger electrode (49) inserted to upper insulator (48), anode (51) between (48) and lower insulator (52) with projection (52a), sample (56) fixed to bottom cathode (54) having concave (54a). Perforate holes (53,55) are formed on wall of (52a) inserted to (54a), and argon exhaust holes (57) are formed on the wall of (54a), and an argon injection hole (50) is formed on the wall of (48).
Patent KR-890004433-B1 (KR)
Title: Dual beam generator of laser plate printing device
Inventor: JU HONG
IPC: H01S3/123
Filed: 1987-09-09
Granted: 1989-11-03
Abstract: A mirror mounting member is inserted into the grooves which are formed from the right upper corner to the left lower corner of the apparatus.  A hole for a rotational shaft is provided at the center position.  Two beam spliters are arranged at 450 with respect to the axis of the light.  Two mirrors are disposed with a space corresponding to the distance between centers of the two beam splitters.  The arrangement of the two mirrors are adjustable by adjusting means.  A step motor is coupled to the mirror mounting member for rotating the mirrors at the required angles. And the mirror mounting member is disposed at a suitable position between the focusing lens of the beam expander.
Patent KR-960001429-B1 (KR)
Inventor: SOGABE KOICHI
IPC: C04B35/581
Filed: 1987-10-30
Granted: 1996-01-27
Abstract: 내용 없음.
Patent KR-900006962-B1 (KR)
Title: Operating apparatus of disc drive using seek-controller
Inventor: KIM HAE-KWANG
IPC: G11B19/28
Filed: 1987-11-03
Granted: 1990-09-25
Abstract: An exclusive seek controller placed between a disc drive controller and interface (8) comprises an objective address latch (6-1), a present address latch (6-2), a distance calculator (6-3) calculating the object distance with latched values, a step motor driver (6-4) driving the step motor when the distance is too far, and a D/A converter (6-5) accessing the distance with a tracking coil when the distance is short.
Patent KR-910005344-B1 (KR)
Inventor: OLKAWA HIDEAKI
IPC: C08G73/10
Filed: 1987-11-17
Granted: 1991-07-25
Abstract: 내용 없음.
Patent KR-900005242-B1 (KR)
Title: Sheet type electrode for use in the measurement of ion concentrations
Inventor: KOTANI HARUO
IPC: G01N27/28
Filed: 1987-11-18
Granted: 1990-07-21
Abstract: Sheet type electode for measuring ions comprises a suppot layer (10) of a material having a sufficiently high electical insulating property provided on the upper surface of the substrate (1) formed of a material having a sufficiently high electrical insulating property; two pairs of electrodes (2A, 2B, 3A, 3B) provided with internal electode portions (6A, 6B) and lead portions (4A,4B,5A,5B) adhered to the lower surface of the substrate; and a second support layer (14) of a mateial having a sufficiently high electrical insulating property provided on the lower surface of the substrate, the lead protions being exposed.
Patent KR-900006970-B1 (KR)
Title: Arrangement for digital data shifting by controlling feedback data line
Inventor: PARK SEUNG-HYUN
IPC: H04L7/00
Filed: 1987-11-26
Granted: 1990-09-25
Abstract: The shift register is for keeping the digital bit information until the different system recognises the information. When arbitary alarm bit of logical zero is input from a number of inputs (IN1-n), an alarm state signal is provided as well as feedbacking the signal to the input providing the alarm to maintain the alarm state. After responding to the logical circuit sensing the alarm state, each feedback loop is cut off.
Patent KR-900007882-B1 (KR)
Title: Lumber door and method for manufacturing thereof
Inventor: YUN SEOK-GYU
IPC: E06B3/74
Filed: 1987-12-28
Granted: 1990-10-22
Abstract: The method for reinforcing bonding strength and preventing warp or twist of the door, comprises connecting square sectional wood pieces by steel pipes, engraving pattern grooves on the surface of the door. The door (1) includes pipe inserting holes (11) for inserting metal pipes (20) into the wood (10); patterned groovea (13) on the wood surface.
Patent KR-950007633-B1 (KR)
Inventor: PICK CLAUS-UWE
IPC: F16J15/32
Filed: 1987-11-24
Granted: 1995-07-13
Abstract: 내용 없음.
Patent KR-950005396-B1 (KR)
Title: Method for homogenizingly introducing water into a material having lipophilic character
Inventor: GIDAY KLAUDI
IPC: A23G1/00
Filed: 1988-06-21
Granted: 1995-05-24
Abstract: A mass with lipophilic character is liquefied and there is incorporated therein by blending a foam of fine air or gas bubble in water, then it is allowed to cool. Preferably, the foam is stabilized by the addition of a foamer, for instance an amphipatic surfactant. The method is applied to the hydratation of chocolate in order to improve its storage stability and heat resistance; the foam is an aqueous whipped egg-white solution.
Patent KR-960004640-B1 (KR)
Title: Process for dyeing textiles in a non-uniform fashion and the textile products
Inventor: RICCI FRANCESCO
IPC: D06P5/15
Filed: 1988-07-01
Granted: 1996-04-11
Abstract: A textile dyed in a non-uniform fashion characterized in that it has irregular, random, maculated patterns on its surface which vary in shape, size, intensity of colour shading and/or colour, and which are distributed in a non-uniform fashion over the surface of the textile, whereas other areas are undyed or have a light colour.
Patent KR-920004538-B1 (KR)
Title: Manufacturing method of semiconductor device
Inventor: LEE CHUL-JIN
IPC: H01L21/768
Filed: 1988-08-11
Granted: 1992-06-08
Abstract: A  semiconductor  device  is  manufactured  by  (A)  forming impurity  injection  area  (2)  on  substrate  (1),  (B)   coating insulation film (3) thereon,  (C)  forming  contact  hole  (4)  by etching the film (3) using photosensitive resin coated on  (3)  as mask, and (D) selectively coating contact hole with tungsten  film (4) so that tungsten film (4) exists only inside the contact hole. The photosensitive resin (6) is  removed  together  with  residual tungsten (5) coated on (6). Two-layer photosensitive resin can  be used to exactly form minute contact hole on the parts of big layer difference.
Patent KR-910003886-B1 (KR)
Inventor: SHIMA MASAHIRO
IPC: D04B7/04
Filed: 1988-09-02
Granted: 1991-06-15
Abstract: 내용 없음.
Patent KR-920000581-B1 (KR)
Inventor: SUZUKI MITUYOSHI
IPC: H04N17/02
Filed: 1988-09-05
Granted: 1992-01-16
Abstract: 내용 없음.
Patent KR-920008929-B1 (KR)
Title: Manufacturing method of magnetic head core
Inventor: PARK NO-TAEK
IPC: G11B5/153
Filed: 1988-09-30
Granted: 1992-10-12
Abstract: A magnetic  head  core  is  manufactured  by  (a)  forming  a magnetic thin film on a manganese-zinc (Mn-Zn)  ferrite  block  by sputtering method, (2) firstly glass  molding  on  it  to  prevent chipping, and grinding and lappine the plane, (3) machining tracks at regular intervals on the block, with a diamond blade in a  high precision dicing machine at the rate of 30,000 RPM, (4)  secondly, glass molding on it with a uniform  thickness,  and  grinding  and lapping the plane, (5) joining the  two  blocks  and  cutting  the joined block. The thickness of the above first  glass  molding  is 10-200 μm
Patent KR-920007515-B1 (KR)
Inventor: BACK PERINGVAR M
IPC: H02P8/18
Filed: 1988-12-21
Granted: 1992-09-04
Abstract: 내용 없음.
Patent KR-930002243-B1 (KR)
Inventor: SHIBATA MOTONOBU
IPC: B01J35/04
Filed: 1988-12-30
Granted: 1993-03-27
Abstract: 내용 없음.
Patent KR-970000638-B1 (KR)
Title: Catalyst for cleaning the exhaust gases for internal-combustion engines
Inventor: DOMESLE RAINER
IPC: B01J23/89
Filed: 1989-02-02
Granted: 1997-01-16
Abstract: The invention relates to an active alumina catalyst with additions of CeO2, ZrO2 and Fe2O3 and/or NiO as support and an active phase, applied thereto, of platinum, palladium and/or rhodium and a base metal, which catalyst is obtainable by impregnating the support containing the additives with solutions of salts of the metals for the active phase, the base metal of the active phase being cerium, and by drying and heating to 250 to 650 DEG C. The catalyst can be used for the oxidation and/or reduction of the exhaust gases from internal combustion engines.
Patent KR-940007150-B1 (KR)
Title: Arrangement for starting brushless dc motor
Inventor: MIN BYONG-HUN
Filed: 1989-02-28
Granted: 1994-08-06
Abstract: The 3-phase brushless DC motor driving circuit without a sensor comprises a peak detector for detecting a peak value of an inverse activating voltage induced to stator coils of each phase, first to third trigger generators for generating a trigger signal, a ring counter for driving first to third power transistors, an OR gate for supplying the trigger signal to a clock terminal of a D flip-flop of the ring counter when the trigger signal is generated from any one of the first to third trigger generators, and the first to third power transistors for causing current to flow into the stator coils, thereby simplifying a manufacturing process.
Patent KR-0125578-B1 (KR)
Title: 페녹시알킬-치환된 헤테로 방향족 화합물 및 이를 제조하는 방법, 및 이를 함유하는 살충제
IPC: C07D235/06
Filed: 1989-08-05
Granted: 1998-07-01
Abstract: 내용 없음
Patent KR-950007864-B1 (KR)
Title: Zoom lens for a video camera
Inventor: SONG PYONG-YONG
IPC: H04N5/232
Filed: 1989-08-31
Granted: 1995-07-20
Abstract: The zoom lens for video camera has ability of zoom rating of 8 magnifications in F/1.6 ˜ F/1.8 of camera lens light. It is light-weight and shorter in length than the existing one and consists of a focus part making focus, a magnification part changing the image.
Patent KR-100210339-B1 (KR)
Inventor: DEMUTH THOMAS PROSSER JR
IPC: C07D499/00
Filed: 1989-10-24
Granted: 1999-07-15
Abstract: 내용없음.
Patent KR-920010016-B1 (KR)
Inventor: YOSHINO TSUNEKAZU
IPC: G02F1/1335
Filed: 1989-11-10
Granted: 1992-11-10
Abstract: 내용 없음.
Patent KR-920000533-B1 (KR)
Title: Method of producing a plating stainless steel sheet with an excellent paint adhesion
Inventor: KIM SANG-HUN
IPC: C23C22/83
Filed: 1989-12-29
Granted: 1992-01-14
Abstract: The coated stainless steel plate is produced by  (a)  plating zinc on a commercial stainless steel plate surface to adhere about 0.1-10 g/ m2 thickness on each side by the vacuum deposite  plating or ion plating method, (b) treating the coated film with phosphate salt to obtain zinc phosphate film of 0.5-4 g/m2, and (c) painting it by conventional method.
Patent KR-0131015-B1 (KR)
Inventor: KAKO KAZUNORI
IPC: G02F1/1335
Filed: 1988-09-30
Granted: 1998-04-16
Abstract: 내용없음
Patent KR-930004237-B1 (KR)
Inventor: HEITZLER VIKTOR
IPC: H01L23/10
Filed: 1988-02-20
Granted: 1993-05-22
Abstract: 내용 없음.