baber/WOPTO huggingface dataset:
Patent JO-3418-B1 (JO)
Title: Conjugation process for pnag and a carrier protein
Inventor: TOMAS MAIRA-LITRAN
IPC: A61K39/385
Filed: 2007-03-28
Granted: 2019-10-20
Abstract: The present application describes a process for conjugating a PNAG which is less than 40% N-acetylated to a carrier protein comprising the steps of a) activating the PNAG by adding a linker comprising a maleimide group to form an activated PNAG b) activating the carrier protein by adding a linker comprising a sulphydryl group to form an activated carrier protein and c) reacting the activated PNAG and the activated carrier protein to form a PNAG-carrier protein conjugate.
Patent JO-2721-B1 (JO)
Title: Artemisinin Derivative Dimers, Their preparation and their therapeutic application
Inventor: ALAIN COMMERCON
Filed: 2007-04-11
Granted: 2013-09-15
Abstract: The present invention relates to novel specific artemisinin derivative dimers, to their preparation, to composition comprising them and to their use as medicament, in particular as anticancer agents.
Patent JO-3814-B1 (JO)
Title: Shisha molasses capsules
Inventor: TAREK WAFIQ SIDANI
IPC: A24F1/30
Filed: 2018-12-10
Granted: 2021-01-31
Abstract: The present invention is prepackaged double or single sided capsule having an internal volume which contains defined quantity of shisha or similar tobacco product(s), which in turn is placed into a hookah bowl. The said double sided capsules [110,111] have removable seals [115, 116] to keep the product intact within the capsule, a base foil latch [112] which comprises the centre element of the invention, which is used to lock the capsules onto the hookah bowl or head. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
Patent KR-820000024-B1 (KR)
Title: Offset lithographic printing presses
Inventor: BROWNE P
IPC: B41F27/00
Filed: 1977-03-30
Granted: 1982-02-05
Abstract: A blanket arrangement for an offset lithographic printing press consists of a sheet of offset blanket material (7) and a pair of bars(1) each with a slot(2) in one side.  One end of the sheet is located in a slot and the other end in the other slot.  Each end is retained in its slot by deformation of the slot and each bar has a pair of apertures which do not communicate with the slot.  The arrangement can be bolted to a blanket cylinder.  The slots may be defined by protrusions(4-6) which grip the ends of the blanket or slot deformation.  The protrusions may be in the form of ribs, two on one side of the slot and one on the other side.
Patent KR-810000635-B1 (KR)
Title: Process for preparing cephalosporin compounds
Inventor: SHIRAISHI MITZURU
IPC: C07D501/18
Filed: 1978-02-28
Granted: 1981-06-10
Abstract: Cephalosporin compds.(I), useful as intermediate of cephalosporin antibiotic, were prepd. by substitution of R1 which is group of compd.(II; R1 = acyl group), to the hydrogen.  Thus, 7β-(D-5-phthalimide-5-carboxy)-3- (3-oxobutyryloxy)methyl-3-cephem-4-carboxylic acid 5.88 g was suspended on the dichloromethane 70 ml and triethylamine 2.80 g was dissolved at <= 10≰C.  N-dimethylaniline 10.0 ml and dimethyldichlorosilane 3.13 ml were added in the soln., stirred at 20-25≰C for 30 min, and then reacted with PCl5 4.2 g at -25- 2≰C to give 7β-amino-3-(3-oxobutyryloxy)methyl-3-cephem-4-carboxylic acid 2.84 g.
Patent KR-830002092-B1 (KR)
Title: 농업 및 원예용 살진균 조성물
IPC: A01N43/80
Filed: 1979-01-23
Granted: 1983-10-12
Abstract: 내용 없음.
Patent KR-830001698-B1 (KR)
Title: 브리지 변환기 회로
IPC: H02M7/68
Filed: 1980-03-20
Granted: 1983-08-29
Abstract: 내용 없음.
Patent KR-880001843-B1 (KR)
Title: Carboxyalkyl dipeptide and process for the preparation of thereof
Inventor: NEUSTADT BERNARD R
IPC: C07K5/06
Filed: 1981-10-21
Granted: 1988-09-21
Abstract: Dicarboxylalkyldipeptide [Of formula (I), where R and R6 are same or not, are OH, lower alkoxy, lower alkenyloxy; R1 is H, C1-10  alkyl or substd. lower alkyl by Me, halo or methoxy; R2, R3, R4  and R7 are, same or not, H or lower alkyl  is used for treating hypertension, and its pharmaceutically acceptable salt is new.  (I) is prepd. by (i) condensg. dipeptide (XIV) with keto compd. (XIII) under reducing conditions or (ii) alkylation of (XIV) by (XXII) or (iii) condensg. amino compd. (XVIII) with keto compd. (XIX) in the presence of condensing agent i.e. DCC, DPPA in CH3CN after protecting reactive gp..
Patent KR-890000040-B1 (KR)
Title: Low viscosity polyester coating compositions
Inventor: SASSANO DARIEL RICHARD
IPC: C09D167/06
Filed: 1981-11-04
Granted: 1989-03-06
Abstract: An insulating liq. polyester compsn. comprises a mixt. of an unsatd. polybasic acid, a polyhydroxy alcohol, a vinyl monomer, two active inhibitors, and a solubilizing agent for the inhibiting compsn.  The inhibitors contain 200-300 ppm hydroquinone and 60-120 ppm mono-t- butylhydroquinone, and act to inhibit the gellification of the polyester.  The compsn. has viscosity of 500-1750 cps. at 25≰C.  The compsn. is used for impregnating glass fiber and mica to form insulators.
Patent KR-840000924-B1 (KR)
Title: A repair apparatus when a bottom of ship is breakage
Inventor: LEE EUI-HO
IPC: B63J99/00
Filed: 1982-04-13
Granted: 1984-06-29
Abstract: An appts. to plug up a hole in a ship's bottom is designed in the shape of a pencil; one end is sharpened and the opposite end has a gripe(19). The body member is pref. a pipe (1), within which a rubber balloon(7) rests attached to a holding strand(17) wound on a spool(18). Within the balloon, a CO2 gas container(8) is located opposite to the piercing member(12). Rubber packings with several rigid cores are prepared apart from the appts. and may be replaced with the balloon floating on the water. The strand is wound on the spool so that the rubber packing tied at the end of the strand may plug up the hole.
Patent KR-860000208-B1 (KR)
Title: Electrically operated manual device
Inventor: KILLE EWALD
IPC: B25C1/06
Filed: 1982-06-09
Granted: 1986-03-15
Abstract: The power tool has an axially moving impact body driven by an electromagnet. The a.c. electromagnet has an oscillating armature hinged at one end that moves the impact body linearly at the free end. The electromagnet has an E-shaped core with its drive coil wound around its middle limb. The armature is pivoted to one outer limb. The impact body slides inside a tube that is fixed inside the hammer's casing. An external tube fits removably onto the inner tube and contains the driven part or tool of the hammer. This driven part is acted on by the impact body. A return spring restores the impact body to its original position.
Patent KR-890001586-B1 (KR)
Title: Container and blank for constructing same
Inventor: LISIECKI ROBERT E
IPC: B65D5/06
Filed: 1982-06-21
Granted: 1989-05-09
Abstract: A plastic coated paperboard blank for constructing a container adaptable to being folded into a flat end container, the blank comprising; four body panels and a side seam flap; first end closure panels connected by horizontal score lines to the ends of the body panels; second end closure panels including a pair of outer panels consisting of upper and lower closure panels respectively connected by horizontal score lines to the ends of two of the body panels, a front panel and a back panel respectively connected by horizontal score lines to the ends of the other two body panels, each including a gable panel defined by diagonal score lines.
Patent KR-890002112-B1 (KR)
Title: Bending method for a circle line of an axual bars and a thin sheets
Inventor: MATSUDANI KANGI
IPC: B21D5/06
Filed: 1982-09-13
Granted: 1989-06-20
Abstract: This process is used for making sharp-end goods in massproduction. The bending apparatus in this process consists of a roll (10) and a thin tough belt (12) welded into the roll (10). Either an axial- cylinder or a thin plate is wound up between the circular roll (10) and the thin tough belt (12), partly or wholly round the roll.
Patent KR-890001377-B1 (KR)
Title: Corrosion inhibitor
Inventor: KAWASAKI YOSHINARI
IPC: C02F5/08
Filed: 1983-11-05
Granted: 1989-05-02
Abstract: A corrosion inhibitor comprises (a) one or more of molybdic, tungstic and nitrous acids, and their alkali salts, (b) an up to C7 aliphatic oxycarboxylic acid or its alkali salt, (c) an inorganic heavy metal, (d) one or more of homopolymers and copolymers prepd.  from acrylic, methacrylic and maleic monomers, and (e) C2-8  monoamine.  The inhibitor is useful for protecting a boiler, steam generator, heater or heat exchanger made of steel from corrosion.
Patent KR-910005041-B1 (KR)
Title: Process making of decorative a tile
Inventor: CHONG CHAN-IL
IPC: B44C1/22
Filed: 1985-01-08
Granted: 1991-07-22
Abstract: A  decorative  tile  is  produced   by   screen-printing   a crystalling marble plate with an acid detergent paint  to  form  a pattern-printed layer, heat-treating it at 120-150  deg.C  for  30 min, acid-treating it in the  hydrochloric  bath  for  40  min  to obtain a pattern-embossed decorative plate, and  coating  a  resin layer on the surface of decorative plate. The tile is used  as  an interior and exterior finishing material for buildings.
Patent KR-890003562-B1 (KR)
Title: Disk driving apparatus
Inventor: SYOOZI MAKOTO
IPC: G11B19/04
Filed: 1985-02-27
Granted: 1989-09-23
Abstract: The data transfer apparatus comprises a disk drive motor for imparting rotation to the loaded record medium and a transducer head for data transfer with the record meidum.  A head transport motor moves the transducer head radially of the record medium so as to enable the transducer head to access the individual data storage tracks on the record medium and a sensor includes a light source for sensing whether the transducer head is in a preassingned track position on the record medium.  A power saving switch is connected between the light source of the sensor and a power supply for allowing the latter to energise the former only when the operation of the sensor is required.
Patent KR-910003770-B1 (KR)
Inventor: HOWELLS RICHARD D
IPC: C07C239/00
Filed: 1985-03-30
Granted: 1991-06-12
Abstract: 내용 없음.
Patent KR-900000414-B1 (KR)
Title: Wrap film for food
Inventor: CHUN BYUNG-SOO
IPC: C08J7/054
Filed: 1986-02-22
Granted: 1990-01-30
Abstract: The non-toxic wrapping film for foodstuffs packaging comprises an extrusion prod. of a resin mixt. consisting of: (a) a base resin mixt. of 84 wt.% linear low density polyethylene, 12 wt.% low density polyethylene and 4wt.% polyolefin based resin modifier; and (b) an additive mixt. of 11-20 wt.% edible maize oil, 17-23 wt.% stearic acid salts, 44-47 wt.% polybutene, 8-10 wt.% sufactant and 11-12 wt.% petroleum resin.  The resin mixt. contains 2-5 wt.% of (b).  The wrapping film is useful for domestic, supermarket, butchery and foodstuff wrapping materials.
Patent KR-940002255-B1 (KR)
Inventor: SCHEUNEMANN KARL-HEINZ
IPC: A61K31/428
Filed: 1986-03-12
Granted: 1994-03-19
Abstract: 내용 없음.
Patent KR-900007303-B1 (KR)
Title: Resin packed semiconductor device
Inventor: KOBAYASHI SHIRO
IPC: H01L23/29
Filed: 1986-06-10
Granted: 1990-10-08
Abstract: Resin packaged semiconductor device has a protective layer formed on a semiconductor element mounted on a lead frame and metal surfaces of electric connecting parts and a resin package covering the protective layer and semiconductor element. The protective layer is made of a metal-organic cpd. which is the reaction prod. of (A) a triazole, a Na benzoate, an azelaic acid, a quinaldic acid, a rubeanic acid or a cupferron cpd. with (B) the metal surfaces of the electric connecting metal parts to produce a cpd. which is difficultly solable. in water. (A) is reacted as a soln. in non-aq. solvent into which the semiconductor device is immersed.
Patent KR-920004736-B1 (KR)
Inventor: WILLIS ANTHONY J
IPC: B29C51/12
Filed: 1986-10-31
Granted: 1992-06-15
Abstract: 내용 없음.
Patent KR-890003968-B1 (KR)
Title: Automatic dresser for gring stone
Inventor: YUN KYONG-HUI
IPC: B24B53/00
Filed: 1986-11-06
Granted: 1989-10-14
Abstract: The apparatus for dressing grinding wheel has a base (1) with a flat lower surface to slide along the base frame of grinding machine.  The upper end of the base is bolted to the bracket (4) fo step motor (3) and pulley (2).  Bearing housings (5)(5') with cover bearings (6)(6') , ball bearings (7)(7'), bushes (8)(8'), support the shaft of feed screw (10) by means of socket nut (9), and the pulley is fitted with the belt (12) key (11).  The dresser housing (15) with a dresser moves in the direction perpendicular to the axis of the grinding wheel to the depth of dressing by step motor (3) and the dresser moves in the parallel direction to the axis of the grinding wheel by hydraulic cylinder (20).
Patent KR-900002937-B1 (KR)
Title: A process for the preparation of a toilet soap containing cerenium
Inventor: LEE HYO-CHANG
IPC: C11D13/00
Filed: 1987-08-31
Granted: 1990-05-03
Abstract: A toilet soap is produced by mixing 100g tallow fatty acid with 25g palm oil fatty acid and neutralizing the mix. with 40g of 49% sodium hydroxide soln. to obtain raw soap of 14-16% moisture, and mixing 5 wt.% selenium-contg. cericite powder (soln.), 0.3 wt.% titanium oxide, perfume and water softner with 100 wt.% raw soap.  The toilet soap gives skin-elasticity and hair-softness.
Patent KR-950012393-B1 (KR)
Inventor: KROMERY ROBERT V
IPC: B29C43/10
Filed: 1987-09-08
Granted: 1995-10-17
Abstract: 내용 없음.
Patent KR-890005332-B1 (KR)
Inventor: CHON YONG-MAN
IPC: F23N5/00
Filed: 1987-09-10
Granted: 1989-12-22
Abstract: 내용 없음.
Patent KR-950012997-B1 (KR)
Title: Polyols
Inventor: POWELL RICHARD LLEWY LLYN
IPC: C08G18/32
Filed: 1987-09-10
Granted: 1995-10-24
Abstract: Fluorine-containing polyols obtained by the free radical addition of a fluoro-olefin having the general formula: <CHEM> wherein Y represents F and Z represents Cl or F(CF2)n- wherein n is an integer from 0 to 10 or Y and Z together form a -(CF2)m- chain wherein m represents an integer from 2 to 4 to a polyol wherein each hydroxyl group is directly attached to a group of the formula:  -(CH2)pO -      (2) wherein p is an integer of at least 4. a
Patent KR-910000998-B1 (KR)
Inventor: MAEDA YUKIO
IPC: H05K3/30
Filed: 1987-09-10
Granted: 1991-02-19
Abstract: 내용 없음.
Patent KR-960013777-B1 (KR)
Inventor: KARIBE HARUYUKI
IPC: G11B23/087
Filed: 1987-12-04
Granted: 1996-10-10
Abstract: 내용 없음.
Patent KR-900004663-B1 (KR)
Title: Data communication interface circuit
Inventor: CHUNG KWANG-YOUNG
IPC: H04L7/00
Filed: 1987-04-18
Granted: 1990-07-02
Abstract: The circuit includes a RAM (20) for temporally storing of communication data through address and data bus connected to a controller and a RAM, a SCLC circuit (30) for transmitting data to Modem by SDLC type frame unit, a VART circuit (40) enabled when data communication with modem is executed by certain frame unit mixed with BSC type frame and PSC type frame, transmission gates (51,53) for controlling data communication between the SDLC cicuit and MODEM, and transmission gates (52,54) for controlling data communication between the VART circuit (40) and MODEM.
Patent KR-910000485-B1 (KR)
Inventor: HOTTA HIRROHISA
IPC: C21B7/16
Filed: 1987-12-31
Granted: 1991-01-25
Abstract: 내용 없음.
Patent KR-900005953-B1 (KR)
Title: Method for purification of silica sand
Inventor: KIM PYUNG-RYUL
IPC: C01B33/148
Filed: 1988-03-08
Granted: 1990-08-18
Abstract: A purification of silica sand is accomplished by the stages of crushing and sieving ore to make silica or natural sand, pouring the sand and the sulfuric acid of 85-95% concentration in the reacting tank, reacting in steam pressure of 15-500 psi for 10-120 seconds in the tank until concentration of sulfuric acid is 30-70%, extracting the waste acid, washing until pH comes to 6.5-7.5 and dehydrating to water centent ratio of 5%. The method saves time and cost, makes production on a large scale.
Patent KR-910003797-B1 (KR)
Inventor: GUNO HIROYUKI
IPC: G11B5/60
Filed: 1988-03-30
Granted: 1991-06-12
Abstract: 내용 없음.
Patent KR-950012429-B1 (KR)
Inventor: HAMANO TOSHIKATSU
IPC: C25D5/08
Filed: 1988-04-29
Granted: 1995-10-17
Abstract: 내용 없음.
Patent KR-910006100-B1 (KR)
Inventor: SUGITANI YUJI
IPC: B23K9/095
Filed: 1988-07-06
Granted: 1991-08-13
Abstract: 내용 없음.
Patent KR-910004932-B1 (KR)
Title: Over load checking machine in registor
Inventor: SHIM BYONG-GON
IPC: G07G1/00
Filed: 1988-08-17
Granted: 1991-07-18
Abstract: The method for detecting the overload state with the position information of the printer motor  comprises  steps:  (a)  counting down the preset reference value up to  zero  to  check  the  inptu pulse;  (b)  cutting  off  the  power  supply  of  the  motor  and displaying the overload state if the input pulse is not  received; (c) typeing the character at the precise  position  if  the  input pulse having the position information is received.
Patent KR-0125784-B1 (KR)
Inventor: MASUMOTO TAKAHIKO
IPC: H04N11/24
Filed: 1988-10-19
Granted: 1997-12-19
Abstract: 없음
Patent KR-950000773-B1 (KR)
Title: Backup-proof fluid distribution apparatus
Inventor: GARNIER DIDIER
IPC: A61M11/06
Filed: 1988-11-07
Granted: 1995-02-02
Abstract: This device comprises in particular a diffusion nozzle (5) whose geometry and manner of operation prevent the return of the diffusible product into the product propellent system (E) when the diffuser is in an off phase, it being possible advantageously for said off phases and the on phases to be pre- or self-set. 
<??>This device diffuses various kinds of fluids such as essences, oils and perfumes. 
<IMAGE>
Patent KR-970008264-B1 (KR)
Inventor: TERASHIMA KANETSUGU
IPC: C09K19/46
Filed: 1988-11-25
Granted: 1997-05-22
Abstract: 요약 없음.
Patent KR-920009355-B1 (KR)
Inventor: KOIKE EISHI
IPC: G11B25/04
Filed: 1989-04-22
Granted: 1992-10-15
Abstract: 내용 없음.
Patent KR-950000878-B1 (KR)
Title: Right or left movable vehicle
Inventor: SHIN HONG-BOM
IPC: B60S9/21
Filed: 1989-05-15
Granted: 1995-02-03
Abstract: Drivers can move their car with the movable body. Specially designed side wheels are installed parallel to seats. Each side wheel has a straight zone to move the car. When the cut part faces the ground the car does not move. The car is raised and moved left or right when a circular zone contacts with the ground as the wheel rotated. A connector (5) is jointed with a driving force transfer shaft (4) and has a fork and a fork lever. A rotating pipe (10) can be rotated by contacting with protrusions of the driving force transfer shaft and has chain gears (11,12) to drive side wheel axles (15,15a).
Patent KR-960000864-B1 (KR)
Inventor: TONE SEIJI
IPC: C08F287/00
Filed: 1989-05-24
Granted: 1996-01-13
Abstract: 내용 없음.
Patent KR-910005986-B1 (KR)
Title: Filter for cleaning waste water
Inventor: GU PAN-HONG
IPC: B01D39/00
Filed: 1989-08-09
Granted: 1991-08-09
Abstract: The filter for filtering insoluble  impurities  contained  in industrial waste water is made into a brush type. On one  side  of the plate (1) of filter are arranged  protruded  cylindrical  rods (2) densely, and on the other side the rods are arranged  sparcely with the distance from the opposite side. Thus large impurities in the waste water  are  captured  on  the  sparce  part,  and  small impurities are collected on the  dense  part  according  to  their sizes.
Patent KR-920005062-B1 (KR)
Title: Multiplexer and demultiplexer device
Inventor: OH DON-SONG
IPC: H04Q11/04
Filed: 1989-08-12
Granted: 1992-06-26
Abstract: The circuit includes a differential  line  receiver  (1)  for receiving differential communication data from  a  sub-highway  to convert them to a  single  set  of  communication  data.  A  clock frequency divider (4) receives external clocks to frequency-divide them, and a 1/32 decoder (5)  decodes  the  output  of  the  clock frequency divider (4).  A  latch  section  (3)  latches  the  data signals of a means (2) by the clock signals of the clock frequency divider (4), and a parallel data receiver (8)  latches  externally inputted signal data by the clock signals of the  clock  frequency divider (4).
Patent KR-920003882-B1 (KR)
Title: Digital to analog converter of bi-cmos current switch
Inventor: KIM HEUNG-SEOK
IPC: H03K17/08
Filed: 1989-08-19
Granted: 1992-05-16
Abstract: The D/A converter  for  preventing  the  spark  current  from generating upon switching by using BiCMOS transistors comprises  a current source unit (1) having n stages to  supply  the  power,  a current switching unit (2) for switching the currents from  the  n stages of current sources under controlling of  first  and  second control  signals,  the  unit  including  first  and  second   PMOS transistors (Pn1,Pn2) and first  and  second  bipolar  transistors (Qn1,Qn2), first and second  NMOS  transistors  (Qn1,Qn2)  and  an output unit (3) having a common  output  terminal  (AOUT)  of  the bipolar  transistors  (Qn2)  and  load  resistors  (RL)  connected between the bipolar transistors (Qn1) and a ground (GND).
Patent KR-920009192-B1 (KR)
Title: Sub-unit for snoop interface
Inventor: LEE KYU-HO
IPC: G06F3/00
Filed: 1989-12-26
Granted: 1992-10-14
Abstract: The method is for processing the cash coherence  protocol  in the system bus rather than the local bus. The circuit comprises  a snoop interface controller (7)  generating  the  snooping  control signals for the system bus (100), address latches (4,5)  providing the latched data to one direction, and a line selector (6) forming the data transfer pass selectively by turning on/off  the  latches and the system bus logically.
Patent KR-920006983-B1 (KR)
Title: Insulation continuity check in-line detecting apparatus of enamel cable
Inventor: RYU SANG-SU
IPC: G01R31/08
Filed: 1989-12-31
Granted: 1992-08-24
Abstract: The in-line tester electronically checks  the  uniformity  of the insulating film covered on the wire  without  respect  to  the thickness of the wire. The in-line tester comprises a power supply (11) for  supplying  AC  power,  a  comparator  (17)  receiving  a rectified power from the power supply  (11),  a  DC  high  voltage generator (12) having a variable means (10) for selecting a proper voltage correspondent to the  radius  of  the  enamelled  wire,  a detecting means (13) receiving the  output  from  the  DC  voltage generator by use of a condensor, a line selection means  (14)  for checking fault numbers on each line, one BCD up-counter  (15)  for counting the number of the fault and other BCD up-counter (16) for setting the fault reference number.
Patent KR-0141589-B1 (KR)
Inventor: SLUYTERMAN ALBERTUS AEMILIUS S
IPC: H01J29/76
Filed: 1990-02-08
Granted: 1998-06-01
Abstract: 내용없음
Patent KR-0150787-B1 (KR)
Inventor: WINE CHARLES MARTIN
IPC: H04H60/31
Filed: 1990-02-19
Granted: 1998-10-15
Abstract: 내용 없음
Patent KR-920009819-B1 (KR)
Inventor: MCGUIRE DENNIS P
IPC: F16D3/62
Filed: 1990-03-07
Granted: 1992-10-22
Abstract: 내용 없음.
Patent KR-0137932-B1 (KR)
Inventor: CHUNG DAVID YEN-LUNG
IPC: C10L1/236
Filed: 1990-05-29
Granted: 1998-04-28
Abstract: 없음
Patent KR-930005952-B1 (KR)
Inventor: JINGU MASAHARU
IPC: H05K5/02
Filed: 1990-08-30
Granted: 1993-06-30
Abstract: 내용 없음.
Patent KR-930001205-B1 (KR)
Title: Process for purifying hydrogen fluoride
Inventor: GUMPECHT WILLIAM H
IPC: C01B7/19
Filed: 1990-09-14
Granted: 1993-02-22
Abstract: A process for preparing hydrogen fluoride that involves treating anhydrous hydrogen fluoride containing primarily trivalent arsenic impurities with a sulfur compound capable of providing sulfide ions (e.g., H2S) so as to precipitate the arsenic (i.e., as As2S3) followed by separation and recovery (e.g., by distillation or filtration) of purified anhydrous hydrogen fluoride.
Patent KR-940000761-B1 (KR)
Inventor: MOTOHASHI TOMOHIKO
IPC: F16D48/04
Filed: 1990-09-27
Granted: 1994-01-29
Abstract: 내용 없음.
Patent KR-930002983-B1 (KR)
Inventor: SUZUKI GEICHIRO
IPC: C08K5/5435
Filed: 1990-10-05
Granted: 1993-04-16
Abstract: 내용 없음.
Patent KR-950011811-B1 (KR)
Inventor: NISHIO KAZUTAKA
IPC: G06T15/50
Filed: 1990-10-13
Granted: 1995-10-10
Abstract: 내용 없음.