baber/WOPTO huggingface dataset:
Patent KR-820002057-B1 (KR)
Title: Method of fabricating precise resistor in semi-conductor integrated circuit
Inventor: LEE BANG OWN
IPC: H01L21/00
Filed: 1981-08-18
Granted: 1982-10-26
Abstract: In manufacturing the resistor and capacitor in integrated circuit, this invention makes it easy to manufacture precise resisor.  When the the number of the resistive metal electrodes are arranged to obtain a certain value of resistance after resistive diffusion layer in the standard process of semiconductor integrated circuit, the connection part between the resistor and metal electrodes is formed a narrow strip.  From the arbitrary point node as reference to the node(n+1) which has approximated resistance, the narrow strip between them is melted to short by excessive current to obtain accurate value of resistance.
Patent KR-860000133-B1 (KR)
Title: Process for preparing heterocyclic esters of phenoxybenzoic acids
Inventor: HOKAMA TAKEO
IPC: C07C205/59
Filed: 1983-01-20
Granted: 1986-02-26
Abstract: Phenoxybenzoate esters of formula (I) are new; (Where X is halogen or CF3; Y is H, halogen, NO2 or CN; R is NO2, alkylthio, halogen or (N; n = 1 or 2). 7 Cpds. (I), including 3-tetrahydrofuryl 2-nitro-5-(2- chloro-4-trifluoromethylphenoxy)benzoate(Ia), are specifically claimed. (I) are selective herbicides, e.g. useful for pre-and/or postemergence control of grasses and broadleaved weeds in soy, cotton, bean, rice, maize and/or cereal crops. (I) are prepd. by the reaction of II and III in the presence of an acid accepter.
Patent KR-920009303-B1 (KR)
Inventor: MOREL PAUL
IPC: F03B15/18
Filed: 1983-02-17
Granted: 1992-10-15
Abstract: 내용 없음.
Patent KR-850000961-B1 (KR)
Title: 20-amino macrolide derivatives
Inventor: DEBONO MANUEL
IPC: A23K20/195
Filed: 1983-09-12
Granted: 1985-07-02
Abstract: Compds. of formula (I) and their acid addn. salts are new. In the formula (I), R is a mono-, bi-, or tricyclic opt. unsatd. ring contg. 1N as sole heteroatom and bonded through the N; R1 is H or an OH protecting gp.; R2 is H, C1-5 alkanoyl, PhCH2W, PhC2H4CO, or PhCO2; R3 is H, iodo, OH, mycarosyloxy, or C1-5 alkanoyloxy; and R4 is mycinoxyloxy. Compds. (I) are broad-spectrum antibacterials and are effective against Pasteurella and Mycoplasma species, e.g. causing mycoplasmal pneumonia in swine.
Patent KR-900000399-B1 (KR)
Title: Homogeneous low melting point copper based alloys
Inventor: BOZE DEBEISIS
IPC: C22C1/00
Filed: 1983-09-19
Granted: 1990-01-25
Abstract: The alloy has the composition(in atomic %) 5-52% Ni, 2-10% Sn, 10-15% P, balance Cu and impurities, the sum of Cu+Ni+Sn being 85-90%.  Also claimed are (i) a homogeneous brazing foil of composition 10-52% Ni, 2-10% Sn, 5-15% P, balance Cu and impurities, the sum of Cu+Ni+Sn being 85-90%, (ii) a homogeneous brazing foil of composition 5-15% Ni, 2-5% Sn, 10-15% P, balance Cu and impurities ; (iii) production of (i) or (ii) by quenching the molten alloy on a moving chill surface at least 10 power 5 deg.c/sec. ; and (iv) joining together two or more metal parts using, as brazing filler metal, a homogeneous foil of composition given.
Patent KR-890003699-B1 (KR)
Title: Pressure-controlling process
Inventor: SUGISAWA KOO
IPC: A23L3/12
Filed: 1985-06-12
Granted: 1989-09-30
Abstract: A pressure-controlling process for heat-sterilizing the food packages in a case or bag within a sterilization treatment vessel under pressure is comprised of changing the rate of pressure increasing in the vessel near the changing point of pressure increasing in the pressure pattern of the package and delaying the time point of the pressure-dropping in the vessel after starting of the cool-treatment thereof.
Patent KR-890001992-B1 (KR)
Title: Power supplying apparatus
Inventor: ASADA MAMORU
IPC: B65G47/00
Filed: 1985-09-18
Granted: 1989-06-07
Abstract: Powder supply apparatus consists of a powder preservation vessel (8) and an measuring room (44).  The powder supply apparatus contains a measuring part forming a measuring space, and a measurement-adjusting member for freely controlling the measuring volume by sliding movement.  This system contains a lower part (2) and an upper housing part (4) fixed at the lower part.  Housing (4) is in a square-section shape and contains lateral sections (6a, 6b, 6c, 6d).  Inside of housing (4) are plate members (10a, 10b) and fixed member (12), which constitute the measuring part. Each plate member (10a or 10b) wholy prolongs between lateral sections (6c,6d) of the housing.
Patent KR-890001737-B1 (KR)
Title: Ignition apparatus for internal combustion engine
Inventor: EMOTO KOSUKE
IPC: F02P15/00
Filed: 1985-10-05
Granted: 1989-05-19
Abstract: The ignition apparatus includes a generator, for signals that indicate when the crankshaft and camshaft of the engine have reached predetermined angular positions, a command circuit for initiating and terminating ignition operation in response to these position signals, a device for establishing operating conditions, following each camshaft position pulse, in which the ignition operation is enabled and a second operating condition, following a subsequent crankshaft position pulse, in which ignition operation is inhibited, and thus eliminate redundant ignition operation and the attendant power loss and heat generation.  The apparatus also includes a timer circuit that acts to enable resetting to the second operating condition by the crankshaft position pulses. This only happens during a fixed time interval following each cam shaft position pulse.
Patent KR-890003739-B1 (KR)
Title: Process for producing l-sugar
Inventor: ALENA BEULLEIZ J
IPC: A23L27/00
Filed: 1986-03-07
Granted: 1989-10-04
Abstract: The method of converting L-arabinose to L-glucose and Lmannose comprises: (a) dissolving 639.7g of sodium cyanide in 2500ml of distilled water; (b) adding sodium cyanide solution and nitrogen gas to reactor system; (c) adding 1.666g of L-arabinose solution (60 weight %) and catalyst to the reactor; (d) separating the catalyst from products.
Patent KR-920002738-B1 (KR)
Inventor: YOSHIDA HIROSHI
IPC: B62D6/02
Filed: 1986-07-31
Granted: 1992-04-02
Abstract: 내용 없음.
Patent KR-900000068-B1 (KR)
Title: Semiconductor device
Inventor: SZUKI DOMIHIRO
IPC: H03K19/0952
Filed: 1986-08-09
Granted: 1990-01-19
Abstract: The semiconductor device comprises a switching stage including a load (8) having its one terminal connected to a first supply potential and a MESFET (9) connected between the other terminal of the load and a second supply potential.  The on/off operation of the switching stage is controlled in response to an input signal.  The device further includes a buffer stage comprising a second MESFET (10) connected to receive the switching stage output at the gate of the buffer stage and having one conduction terminal connected to the first supply potential.  The device also includes a Schottky barrier diode (11) having its cathode connected to the gate of the second MESFET.
Patent KR-910000034-B1 (KR)
Inventor: SPLEHER GEORG P
IPC: C07D211/60
Filed: 1986-08-27
Granted: 1991-01-19
Abstract: 내용 없음.
Patent KR-940003925-B1 (KR)
Inventor: GANTIER JEAN-PIERRE
IPC: B60T13/52
Filed: 1986-10-20
Granted: 1994-05-09
Abstract: 내용 없음.
Patent KR-900004690-B1 (KR)
Title: Co gas sensor
Inventor: LIM HONG-GI
IPC: G01N27/12
Filed: 1986-11-26
Granted: 1990-07-02
Abstract: The SnO2-Ag thin film element in which the Ag is contained at 0.2-5 % is formed by the vacuum-deposition method. The element is heat- treated at 200-800 degree C for 5-120 min.. The electrode layer Au is vacuum-deposited on the heat-treated element. The electrode layer is etched with l mm gap after the photo-resistor. Then the lead wire is soldered on the electrode and unnecessary Ag layer is etched by the photo lithography.
Patent KR-890004329-B1 (KR)
Title: Polynetwork epdm rubber
Inventor: CORAN WEBERT Y
IPC: C08L51/06
Filed: 1986-12-24
Granted: 1989-10-31
Abstract: The polynetwork rubber is a polymer production of a mixt. of ethylene, propylene and a lesser quality of nonconjugated dien (EPDM rubber) and contains both ionomer crosslinks and crosshinks formed by reaction of the rubber with S, a S doner, a methylol phenoleic resin or an organic peroxide.  The EPDM rubber is treated with malei acid as anhydride of fumaric, e.g. masticated with maleic anhydride and a free radical generater such as benzothiazyl disulphide to form an adduct.  The adduct is reacted with a polyvalent metal salt, hydroxid as oxide, e.g. ZnO to form an ionomer which is crosshinked with a vulcanizing agent.
Patent KR-910003606-B1 (KR)
Inventor: MCCLEEREY EARL W
IPC: H01R4/02
Filed: 1985-10-11
Granted: 1991-06-07
Abstract: 내용 없음.
Patent KR-930011817-B1 (KR)
Inventor: SASA NAOMICHI
IPC: B62D7/18
Filed: 1987-01-22
Granted: 1993-12-21
Abstract: 내용 없음.
Patent KR-900007169-B1 (KR)
Title: Linear actuator assembly for accessing a magnetic memory disc
Inventor: SUZUKI MASAMI
IPC: H02K41/035
Filed: 1987-01-28
Granted: 1990-09-29
Abstract: The side head positioning system shows the heads (1) held to a carriage (30) which is connected to the voice coil (4) of a voice coil/motor system (41) on the yoke of which is fitted a damping mass. The mass prevents undesired lateral oscillations. The carriage (30) itself is composed of a concentric ring/tube and spine arrangement (3a,3b) is limited by a stop mechanism. The carriage (30) can move no further in the horizontal direction when the stop disc makes contact with the carriage limit disc.
Patent KR-900003290-B1 (KR)
Title: Laminating method for paper and synthetic resin film
Inventor: CHA KWANG-HYUN
IPC: B29C65/18
Filed: 1987-03-26
Granted: 1990-05-14
Abstract: In a press apparutus having convex form (3) having press pannel (2) which moves up down in the die base (1), it has a highfrequency or electric heating app.. The intermediate material (4) is inserted between the convex form and a synthetic resin film (6), and the synthefic resin film is laminated upto the substrate paper (5) set on the die base. The intermediate material is selected from cellophane paper, paper or woven paper.
Patent KR-900001913-B1 (KR)
Title: Continuous retting bowl of liquid for cloth
Inventor: SANDO YOSHIGATSU
IPC: D06B21/02
Filed: 1987-06-03
Granted: 1990-03-26
Abstract: A continuous liquid retting bowl comprises a liquid bowl (4) supported with a support shaft, a screw patch (8) being engaged with a ball screw (7) in the side of the liquid bowl, a motor (12) in the support board for the rotation of the screw patch, and a bearing (10) .  The retting bowl gives a uniform dyeing treatment of the cloth.
Patent KR-930006222-B1 (KR)
Inventor: WARD DEREK
IPC: G05B19/05
Filed: 1987-06-03
Granted: 1993-07-09
Abstract: 내용 없음.
Patent KR-960002008-B1 (KR)
Inventor: NAKAI HIROTO
IPC: G11C16/30
Filed: 1987-07-09
Granted: 1996-02-09
Abstract: 내용 없음.
Patent KR-900006347-B1 (KR)
Title: Prepartion of korean paper
Inventor: HAN BYUNG-SIK
IPC: D21H17/20
Filed: 1987-10-02
Granted: 1990-08-28
Abstract: A Korean paper is produced by dipping and cooking a white bark of paper mulbery into an aq. soln of calcium hydroxide 5-15% as a cooking liquor to obtain a pulp liquor, adding a hypochlorous acid as a bleaching agent to the pulp liquor, bleaching and beating in the Hollander beater to obtain a made-paper, and drying and compressing the made paper. The cooking liquor is prepd. by mixing 0.05-0.07% of cooking auxiliary agent with 0.01-0.1% of resin dispersing detergent. The Korean paper has a good whiteness and fastness.
Patent KR-970009402-B1 (KR)
Inventor: BRANDSTETTER ROBERT W
IPC: G02B27/46
Filed: 1987-12-29
Granted: 1997-06-13
Abstract: 내용없음.
Patent KR-950003747-B1 (KR)
Inventor: BUTT GRAHAM P
IPC: F23R3/00
Filed: 1988-04-01
Granted: 1995-04-18
Abstract: 내용 없음.
Patent KR-900006979-B1 (KR)
Title: Method for cultivation of mushrooms
Inventor: LEE EUN-KWAN
IPC: A01G1/04
Filed: 1988-05-17
Granted: 1990-09-25
Abstract: A method for preparing rice straw medium and cultivating mushroom in the medium comprises (a) mixing 70 wt.% of cut rice straw as a chief material and 30 wt.% of rice barn, wheat bran, byproduct of soybean, saw dust etc. as a sub-material, (b) adjusting the mixture to 50-70% of water content, (c) picking the medium into P.P. film bag and making a hole in the upper part of bag, (d) sterilizing the bag in the iron pot and cooling it and (e) inoculating the cooled medium with mushroom spore and cultivating it.
Patent KR-920006870-B1 (KR)
Inventor: HAYAKAWA ISAMU
IPC: D03D51/00
Filed: 1988-05-19
Granted: 1992-08-21
Abstract: 내용 없음.
Patent KR-920003800-B1 (KR)
Inventor: CHEN MIN-LIANG
IPC: H01L27/092
Filed: 1988-06-20
Granted: 1992-05-14
Abstract: 내용 없음.
Patent KR-970007415-B1 (KR)
Title: Absorbent article having a hydrophonic transport layer
Inventor: MEYER STEPHEN C
IPC: A61F13/15
Filed: 1988-10-15
Granted: 1997-05-08
Abstract: An absorbent article comprises an absorbent body of a hydrophilic material having a liquid permeable top cover which has an effective average pore size. A liquid permeable transport layer is located between the top cover and absorbent body. This is made of a material which is less hydrophilic than the absorbent body and has an effective pore size smaller than the topcover pore size. Pref. the absorbent body includes an absorbent hydrogel polymer material.
Patent KR-940003702-B1 (KR)
Inventor: AKNAR ATILA
IPC: H04N7/18
Filed: 1987-11-16
Granted: 1994-04-27
Abstract: 내용 없음.
Patent KR-970007406-B1 (KR)
Title: Electronic shutting system for image -scanners
Inventor: PARK HONG-CHOL
IPC: H04N5/228
Filed: 1989-01-31
Granted: 1997-05-08
Abstract: An electronic shutting system of image scanner wherein : a switching gate transistor(SQ) is connected between a photodiode(PD) and a power supply(Vcc); the controlled voltage of a variable resistor(VR1) is converted to code through a ROM(6) after it is converted to digital data by an A/D converter(2) to establish prescribed number of horizontal clocks; horizontal clocks(Hi-Hi) are counted by a counter(7) resetted to control pulse(PG); and a comparator(4) compares said established and counted horizontal clocks to output shutting pulses(SP) and then to control the gate power of said switching gate transistor(SQ); is disclosed. Thereby, it is possible to vary the exposing time.
Patent KR-910008250-B1 (KR)
Title: Cutting apparatus for wood
Inventor: CHANG DONG-OK
IPC: B27L7/00
Filed: 1989-02-23
Granted: 1991-10-12
Abstract: The equipment repeatably cuts the log in a set  thickness  by controlling a block carrier reciprocating  distance  and  the  log feeding distance with a programmable controller.  The  log  cutter comprises a block carrier (10)  reciprocating  on  rails  (15),  a hydraulic device (20) fixing the log on the  carrier  (10),  limit switches (16)/ metal sensing switches (17) positioned on the rails (15), rack (33) and rack gear (32)  coupled  to  a  driving  shaft (31), an encoder equipped at one end of the driving shaft (31),  a counter receiving  a  pulse  output  from  the  encoder,  and  the programmable controller connected to a feeding motor control  unit and an inverter connected with a block carrier motor (11).
Patent KR-0127305-B1 (KR)
Inventor: SHRAKI HIROYUKI
IPC: G11B5/702
Filed: 1989-05-27
Granted: 1997-12-29
Abstract: 내용없음
Patent KR-930000026-B1 (KR)
Inventor: YAMANAKA TAKASHI
IPC: G11B15/46
Filed: 1989-06-02
Granted: 1993-01-06
Abstract: 내용 없음.
Patent KR-960006123-B1 (KR)
Title: Waterproofing cloth and the manufacturing method thereof
Inventor: KIM SANG-HYUN
IPC: D06N3/12
Filed: 1989-06-23
Granted: 1996-05-09
Abstract: The lower coated layer is prepared by coating 20-70g/m2 of polar organic solvent soln. on fiber cloths that comprises 2-5% nonionic surfactant, 0.1-2% anionic surfactant, 0.1-10% silica gel, 0.2-5% polyisocyanate and 12-30% polyamino urethane resin with amino acid of 10-45%; solidifying in water to form ultramicro hole; extracting polar solvent with alkali soln.; extracting silica gel; drying. The upper coated layer is prepared by coating 50-150g/m2 of polar organic solvent soln. on the lower coated layer that comprises 0.1-2% nonionic surfactant, 2-5% anionic surfactant, 0.1-10% silica gel of 0.2-5% polyisocyanate and 12-30% polyamino urethane resin with amino acid of 50-70%; solidifying, extracting, and drying.
Patent KR-930000015-B1 (KR)
Inventor: SUEKANE HIROMASA
IPC: G06K7/00
Filed: 1989-06-30
Granted: 1993-01-06
Abstract: 내용 없음.
Patent KR-0142197-B1 (KR)
Inventor: ROECHLING HANS
IPC: A01N43/40
Filed: 1989-08-18
Granted: 1998-07-01
Abstract: 내용없음.
Patent KR-920005239-B1 (KR)
Inventor: ENGELER WILLIAM E
IPC: G06F17/16
Filed: 1989-10-10
Granted: 1992-06-29
Abstract: 내용 없음.
Patent KR-960005697-B1 (KR)
Title: Expandable garment hanger
Inventor: HUNT WILLIAM J
IPC: A47G25/62
Filed: 1988-10-21
Granted: 1996-05-01
Abstract: PCT No. PCT/GB88/00919 Sec. 371 Date Apr. 17, 1990 Sec. 102(e) Date Apr. 17, 1990 PCT Filed Oct. 21, 1988 PCT Pub. No. WO89/03652 PCT Pub. Date May 5, 1989.The garment hanger is disclosed having a body and a hook mounted on the body to suspend the hanger on a rail. A movable arm is conveniently slidably mounted in the body for free movement in at least one direction, preferably the outward direction. A locking device is mounted on the body to lock the movable arm relative to the body against movement in an inwardly direction preferably by the interengagement of teeth on the locking device with ratchet teeth along the top edge of the corresponding movable arm. The locking means is releasable by a lever mechanism operated remotely from the locking device to allow free movement of the arm in either an outward or inward direction. Conveniently, the releasable lever mechanism is mounted on a garment engagable portion at the outermost end of the movable arm. In one preferred embodiment of a garment hanger two arms are slidably simultaneously in the hanger body in mutually opposite directions, and the locking means is mounted for engagement with one of the movable arms.
Patent KR-920008144-B1 (KR)
Title: Printing method for receipt of cash register
Inventor: U WON-HOE
IPC: G07G1/12
Filed: 1990-02-21
Granted: 1992-09-22
Abstract: The method is for selecting the print mode  whether  to  type the bill on the inspection paper of the cash register so that  the paper and the ribbon consumptions are saved. The method  comprises steps; (a) selecting  the  mode  for  printing  the  bill  on  the inspection paper after checking the selective print  flag  set  at the program mode; (b) setting the account flag during the accurate account; (c)  printing  the  bill  on  both  of  the  receipt  and inspection papers when the selective print flage is not set at the print mode or both of the flags are set; and (d) printing the bill only on the receipt paper when the selective print flag is set but the account flag is not.
Patent KR-0180723-B1 (KR)
Inventor: YAMAKAWA YOSHIFUMI
IPC: G09G5/00
Filed: 1990-03-19
Granted: 1999-05-15
Abstract: 내용 없음.
Patent KR-930007329-B1 (KR)
Inventor: ENDO NAOKI
IPC: G11B27/30
Filed: 1990-03-31
Granted: 1993-08-05
Abstract: 내용 없음.
Patent KR-920003253-B1 (KR)
Title: Sewing machine with fabric feeder machanism
Inventor: KIM WEON-SIG
IPC: D05B27/00
Filed: 1990-05-30
Granted: 1992-04-25
Abstract: The  improved  feeding  device  performs  easy  and  accurate feeding of a thick sheet, such as leather  or  canvas  sheet,  for sewing. In the  machine,  a  side  moving  mechanism  comprises  a rotating shaft for performing intermittent periodic rotation and a lever member having a middle pivot shaft and one end of the  lever being connected to the middle shaft with at least  one  connecting members whereas the other end connecting to the support bar of the press foot for the lever to make  pivot  movement  on  the  middle pivot shaft.
Patent KR-930003343-B1 (KR)
Title: Roller angle regulator of grinding machine
Inventor: KIM YUN-SU
IPC: B24B47/00
Filed: 1990-07-11
Granted: 1993-04-26
Abstract: In  the  grinder  for  grinding  fishing  rods  of  different thickness and golf clubs, the drive shaft receives  in  its  front tip receptacle a picotable connector having a ball at its tip  and a chain gear at the other end for joining with another gear t  the rear end of the driven  shaft  by  means  of  a  chain  integrally engaging the two gears for  coaxial  rotation.  The  driven  shaft having a grinding wheel at its front tip is adjustable for up  and down or right and left movements by moving the  respective  plates supporting  the  driven   shaft   bearing   housing   with   screw adjustments. The  movement  of  the  grinding  driven  shaft  with pivotal movement of the connector ball head  changes  the  contact angle of  the  grinding  wheel  surface  to  adjust  the  grinding condition in accordance with the different thicknesses of the rods for grinding.
Patent KR-0169123-B1 (KR)
Inventor: HARBESON SCOTT L
IPC: A61P37/08
Filed: 1990-08-09
Granted: 1999-01-15
Abstract: 내용 없음.
Patent KR-0162902-B1 (KR)
Inventor: PARK JUNG-SOO
IPC: H04N7/14
Filed: 1990-08-29
Granted: 1999-01-15
Abstract: 내용 없음.
Patent KR-930010250-B1 (KR)
Inventor: KONNO YOSHIKUNI
IPC: H01L29/792
Filed: 1990-09-05
Granted: 1993-10-15
Abstract: 내용 없음.
Patent KR-0134183-B1 (KR)
Inventor: BERNARD DANNER
IPC: D06M13/467
Filed: 1990-09-06
Granted: 1998-04-18
Abstract: 본 발명은, 양쪽성 계면활성제(베타) 및 임의로는 적어도 하나의 비이온성 유화제(감마) 및 임의로는 하이드로트로픽 화합물(델타) 및/또는 양이온성 유화제(에타)를 포함하며 pH가 7이하인, 양성자화된 아미노 폴리실록산(알파)의 수성 미세 유체에 관한 것이다. 
     본 발명에 따른 미세 유제는 안정성, 특히 전단력에 대한 안정성이 우수하며, 섬유상 물질, 특히 직물의 처리에 유용한 표면 처리제로서 적합하다.
Patent KR-930005740-B1 (KR)
Title: Dram cell having a reverse fin type capacitor
Inventor: KIM SUNG-IN
IPC: H01L27/108
Filed: 1990-10-24
Granted: 1993-06-24
Abstract: The DRAM cell is mfd. by (a) forming a field oxide film (22), a gate oxide film (23), a gate poly (24) and a  side  wall  spacer (25) on the substrate (21), (b) forming a high voltage oxide  film (26) on the whole substrate, (c) etching the film (26) to  form  a contact hole, covering  the  hole  with  a  first  monocrystalline silicon film (27) and a photosensitive  material  (30),  and  then etching the film (27) to form a pattern  of  the  film  (27),  (d) covering a second monocrystalline silicon film (28)  on  the  film (27), and then implanting an arsenic ion (As)  on  the  substrate, (f) covering the film (28) with  a  photosensitive  material,  and then etching the film (28) to form a pattern, and (g)  covering  a polycrystalline silicon film (29) on the whole substrate, and then etching it to form a pattern.
Patent KR-0148011-B1 (KR)
Inventor: YUKAWA MASAHIKO
IPC: G03F7/039
Filed: 1990-10-27
Granted: 1998-08-01
Abstract: 일반식 [Ⅰ] 로 표시된 반복단위의 몰 퍼센트 (a)가 1 몰% a 90 몰% 의 범위이고 일반식 [Ⅱ] 로 표시된 반복단위의 몰 퍼센트 (b)가 10 몰% b 99 몰% 의 범위인 하기 일반식 [Ⅰ] 및 [Ⅱ] 로 표시되는 반복단위들로 구성되는, 유기용매-가용성 폴리이미드 수지 100 중량부 및 o-퀴논디아지드 화합물 1 ∼ 100 중량부를 함유하고 0.05∼3.0dl/g (0.5g/dl 의 농도, 메틸피롤리돈 내, 30℃에서의 측정치) 의 환원점도를 가짐을 특징으로 하는, 포지티브 감광성 폴리이미드 수지 조성물. 
     화학식1 
     
       
     
     화학식2 
     
       
     
     (식중, R₁ 은 페놀성 히드록실기, 카르복실기, 티오페놀기 및 술폰기로 구성된 군으로부터 선택되는 적어도 한 종류의 하나이상의 기를 갖는 디아민을 구성하는 2 가의 유기기이고 ; R₃ 는 페놀성 히드록실기, 카르복실기, 티오페놀기 및 술폰기를 갖지 않는 2 가의 유기기이며 ; R₁ 이 카르복실기 및 술폰기로 구성된 군으로부터 선택된 적어도 한 종류의 하나이상의 기를 갖고 페놀성 히드록실기 및 티오페놀기를 갖지않는 경우에는, R₂ 및 R₄ 는 각각 테트라카르복실산 및 그의 유도체를 구성하는 4 가의 유기기이거나, 또는 R₁ 이 페놀성 히드록실기 및/또는 티오페놀기를 갖는 경우에는, R₂ 및 R₄ 는 각각 방향족 고리에 직접 결합되지 않은 4 개의 카르보닐기로 구성된 테트라카르복실기 및 그의 유도체를 구성하는 4 가의 유기기이다.)
Patent KR-930003936-B1 (KR)
Title: Process for the production of aldehydes
Inventor: BAHRMANN HELMUT
IPC: C07C45/50
Filed: 1990-12-13
Granted: 1993-05-17
Abstract: The preparation of aldehydes by hydroformylation of olefinically unsaturated compounds. The reaction is carried out in the presence of a catalyst system which contains rhodium and an ammonium salt of a sulfonated phosphorous acid triester which is soluble in organic media.
Patent KR-940009215-B1 (KR)
Inventor: TANAKA HIDEAKI
IPC: E02F9/22
Filed: 1990-03-20
Granted: 1994-10-01
Abstract: 내용 없음.