baber/WOPTO huggingface dataset:
Patent KR-940011809-B1 (KR)
Title: Structure of eeprom and fabricating method thereof
Inventor: LEE BYONG-IK
IPC: H01L27/115
Filed: 1991-12-23
Granted: 1994-12-26
Abstract: The method includes the steps of growing a field oxide film (9) on the substrate (1) to divide the substrate region between a memory region and a peripheral circuit region, forming a gate oxide film (10) on the memory region to dope mobile ions, i.e. K+ ions into the gate oxide film (10) to form a gate (11), forming a gate (13) and an undoped gate oxide film (12) on the peripheral circuit region, and forming a source and drain region (14) into the substrate portions of the both sides of the gate (10,13). The EEPROM controls the threshold voltage (VT) without floating gate by doping the mobile ions (K+) into the film (10).
Patent KR-940011513-B1 (KR)
Title: Fe-stainless flux in the unactivity air
Inventor: JU JAE-HON
IPC: B23K35/36
Filed: 1992-02-25
Granted: 1994-12-20
Abstract: The flux for brazing ferrous or stainless steel under inert gas, manufactured by pasting a solvent with copper or nickel powder, easily brazes complexed parts. The method for preparing brazing flux comprises; making gel-phase solvent by heating propylenen glycol, stearc acid and sodium hydoxide; mixing the gel-pahse solvent with ethylene glycol or diethylene glycol; and mixing the above result with the copper or nickel power.
Patent KR-950004929-B1 (KR)
Inventor: HENSLER PAUL L
IPC: C01B25/41
Filed: 1992-02-27
Granted: 1995-05-16
Abstract: 내용 없음.
Patent KR-950012108-B1 (KR)
Title: Absresin composition having freon-resistance
Inventor: KU JONG-KI
IPC: C08L25/12
Filed: 1992-02-28
Granted: 1995-10-14
Abstract: The thermoplastic resin composition is composed of (A) 25-40 parts of 35-60% grafted ABS resin containig 20-60wt% latex mixture, 5-20wt% acrylonitrile, and 15-60wt% styrene, and (B) 60-75 parts styrene-acrylonitrile (SAN) resin containing 65-85wt% styrene and 15-35wt% acrylonitrile. The latex mixture contains polybutadiene latex of an average particle diameter of 0.2-0.5 micrometer and styrene-butadiene rubber latex of with an average particle diameter of 0.5-1.0 micrometer, while the mixing ratio being 90:10-60:40. SAN is a mixture of a resin of a molecular weight of 80,000-140,000 and a resin of a molecular weight of 130,000-200,000, while the mixing ratio being 40:60-0:100.
Patent KR-100243961-B1 (KR)
Inventor: DEAK ADRIAN BOGAL JANG
IPC: H01L29/06
Filed: 1992-06-25
Granted: 2000-02-01
Abstract: 반도체 장치는 표면에 인접한 아일랜드-형 영역(32)을 가진 반도체 몸체(1,2)를 포함하며, 접촉 패드(6)는 아일랜드-형 영역(3) 상부에 제공되고, 절연층(5)에 의해 거기로부터 분리된다. 상기 아일랜드-형 영역(3)은 인접 절연 영역(4)을 가진 pn- 접합(34)을 형성한다. 본 발명에 따라, 상기 장치는 pn-접합(34)의 항복 전압을 증가시키기 위한 수단(40,41)을 가지고 제공된다.
Patent KR-100265750-B1 (KR)
Title: Charge coupled device
Inventor: YOON JU-HYUNG
IPC: H01L27/148
Filed: 1992-07-10
Granted: 2000-10-02
Abstract: PURPOSE: A charge coupled device is provided to reduce a reset noise of an image sensor by improving a structure of a charge coupled device. CONSTITUTION: A low-density region(22) is formed on an upper face of a semiconductor substrate(21). An OG(output gate)(23) gate and an RS(ReSet) gate(24) are formed on the semiconductor substrate(21) of the low-density region(22). A high-density RD(Reset Drain) region(26) is formed at the low-density region(22) of one side of the RS gate(24). A low-density FD(floating diffusion) region(25) is formed within the other side of the RS gate(24), namely the low-density region(22) between the OG gate(23) and the RS gate(24). The density of the FD region(25) is lower than the density of the RD region(26).
Patent KR-950005270-B1 (KR)
Title: Manufacturing method of bump of surface-mount type semiconductor package
Inventor: HAN OH-SOK
IPC: H01L21/60
Filed: 1992-07-16
Granted: 1995-05-22
Abstract: The method includes the steps of depositing an Al film (22) on the semiconductor substrate (21) on which circuit elements are formed, depositing a Cr film (23) on the film (22), coating a photoresist layer (24) thereon to form a metal wiring and an Al pad using wiring and pad masks, removing the layer (24) to apply a covering layer (25) of PSG or PiQ thereon to remove and expose the passivation layer of pad portion (30) using a photo-etching process, depositing and annealing a Cu layer (26) thereon to apply a pholoresist layer (27) thereon to form a bumper hole to fill the hole with Pb/Sn plug (28) to form a bumper, and removing the layer (27) and the exposed layer (26) to reflow the bumper, thereby protecting the passivation film and Al pad upon removing of the Cu and Cr films.
Patent KR-940011549-B1 (KR)
Title: Spinning nozzle for tableware washing machine
Inventor: KIM KAK-RYOL
IPC: A47L15/00
Filed: 1992-08-22
Granted: 1994-12-21
Abstract: The washer nozzle is constructed in a multistep for allowing its rotation and up and down motion in accordance with the variation of water pressure. The water jet rotation nozzle is designed in 2-5 steps. There are three step nozzles; the base nozzle is founded in center of water bath, the second nozzle is protruded from third nozzle and supported by the third nozzle, and the first nozzle is protruded and supported by the second nozzle. The height of each nozzle is regulated spontaneously by the spring which is actuated by the water pressure.
Patent KR-950005858-B1 (KR)
Title: Getter for crt
Inventor: LEE KYONG-SANG
IPC: H01J29/94
Filed: 1992-09-02
Granted: 1995-05-31
Abstract: The getter structure system for a cathode-ray tube reduces manufacturing price and is easy to assemble by constructuring a getter supporter and a getter spring into an integral body. The getter structure is characterized that a getter supporting spring is constructed by a getter spring part and a getter supporter part into an integral body, width of the getter supporter part being more narrow than width of the getter spring part, and thickness of the getter supporter part being thicker than thickness of the getter spring part.
Patent KR-950009792-B1 (KR)
Title: Npn transistor and its making method
Inventor: KIM DAE-BYONG
IPC: H01L21/331
Filed: 1992-09-23
Granted: 1995-08-28
Abstract: a semiconductor substrate(1) on which  n+ burying layer(2) and n well region(3) are defined; a field oxide film(6) formed on the n well region(3), and divided at regular intervals; p- region(4) and p+ region(5) formed in the n well region(3) between the divided field oxide films(6); n+ region(8) formed in the p- region(4); n- regions(13) formed on side walls of n+ region(8) in the p- region(4); an insulation film(7) formed on the field oxide film(6) and the p- region(4) so as to expose the defined portions of the n+ region(8), the n+ burying layer(2) and the p+ region(5); a polysilicon(14) formed on the n+ region(8); a collector(10), a base(11), and an emitter(9) respectively formed on the exposed n+ burying layer(2), p+ region(5) and polysilicon(14). Hot carrier between the emitter and the base is prevented by using the laterally graded emitter in BICMOS, and the life time and reliability of the transistor are increased.
Patent KR-100234599-B1 (KR)
Inventor: SHIBASAKI OHSAMOO
IPC: G03B17/26
Filed: 1992-11-30
Granted: 1999-12-15
Abstract: 본 발명은 한 롤의 필름이 그 주위에 감기는 스풀 측과, 한 쌍의 원통형 허브와, 상기 스풀축 및 원통형 허브 사이에 제공된 한 쌍의 플랜지를 포함하는 사진용 필름 카트리지용 스풀(spool)에 관한 것이다. 스풀축의 양단부는 두께가 0.5 내지 0.8mm인 원통형 축으로 만들어진다.
Patent KR-940011665-B1 (KR)
Title: Application program's message analyzing method using pc multiwindow
Inventor: SHIN KYONG-CHOL
IPC: G06F11/28
Filed: 1992-12-14
Granted: 1994-12-23
Abstract: The analysis method analyzes the messages of application programs using the multiple windows of a computer which is an operator terminal in the telephone exchange system so that the computer can keep the track of message for debugging as well as manage the system operation. The method comprises steps of checking message analysis request of input commands (1,2); if request, the processing inputs the command immediately if the window is open already or otherwise, after opening the windows (4-7,13); if not request, the processing inputs the command immediately if the window is not open or otherwise, after closing the windows (9-13).
Patent KR-0125873-B1 (KR)
Title: High anti-flammable hips resin composition
Inventor: LEE KYU-CHOL
IPC: C08L23/28
Filed: 1992-12-21
Granted: 1997-12-26
Abstract: A thermoplastic resin composition is produced by adding 15-25 parts of a Br-based flame retardant, 5-9 parts of Sb2O3, 3-8 parts of chlorinated polyethylene (CPE) to 100 parts by weight of HIPS resin. Even though used a Br-based flame retardant to maintain a low cost, the resin is NON-PBDE and maintains high-flame retardancy.
Patent KR-950009358-B1 (KR)
Title: Thickness measuring device of slag
Inventor: KUM CHANG-HUN
IPC: G01B21/18
Filed: 1992-12-30
Granted: 1995-08-21
Abstract: The method for measuring the thickness of slag comprises the steps of digesting a floating castable made of the castable with the density of 3.0-5.5 g/cm3 at the upper portion of a ladle in which the slag is floated; measuring the whole length and radius of the floating castable; obtaining an equation for measuring the slag thickness by using the measured value, density of slag, density of atmosphere, density of the castable; measuring the height of the floating castable floated up to the slag and then applying the measured value to the equation to measure the thickness of the slag.
Patent KR-100258973-B1 (KR)
Title: Bimos transistor logic circuit
Inventor: KIM KYUNG-HWAN
IPC: H03K19/08
Filed: 1993-02-17
Granted: 2000-06-15
Abstract: PURPOSE: A BIMOS transistor logic circuit is provided which eliminates noise margin and maximizes a swing width to improve the gate driving performance and the response speed of output signal. CONSTITUTION: A BIMOS transistor logic circuit includes the first MOS transistor(31) whose gate is connected to a signal input port and whose one port is connected to the ground, the second MOS transistor(32) whose gate is connected to an output port and whose one port is connected to the ground, and the first bipolar transistor(35) whose base is connected to the other port of the first MOS transistor and which is connected between the power supply and the output port. The circuit further has the second bipolar transistor(36) whose base is connected to the other port of the second MOS transistor and which is connected between the output port and the ground, a switch(37) for selectively driving the first and second bipolar transistors in response to an input signal, and a resistor connected between the base of the first bipolar transistor and the output port.
Patent KR-100236629-B1 (KR)
Inventor: STRACK DAVID CRAIGE
IPC: D04H1/54
Filed: 1993-03-31
Granted: 2000-03-02
Abstract: 본 발명은 다성분 중합체 스트랜드로부터 제조된 부직포를 제공한다. 이 부직포는 다성분 중합체 스트랜드의 한쪽 또는 시드에 폴리올레핀 및 에틸렌 알킬 아크릴레이트의 블렌드를 함유한다. 이 부직포는 개선된 내마모성, 강도, 인성 및 연성을 갖는다. 또한, 본 발명은 상기 다성분 물질이 내부의 용융 취입층의 양쪽 면에 결합되어 이루어지는 복합 물질을 제공한다.
Patent KR-960011263-B1 (KR)
Title: Wire width measurement photo mask of semiconductor device
Inventor: PARK KI-YEUP
IPC: G03F1/44
Filed: 1993-06-12
Granted: 1996-08-21
Abstract: The photomask includes an upper auxiliary pattern(20) of a plurality of the first auxiliary pattern(10) with a finite interval, and a lower auxiliary pattern(30) of a plurality of the second auxiliary pattern(10') having the first auxiliary pattern(10) with a finite interval of same size. The interval of the second auxiliary patterns(10') is different from that of the first auxiliary patterns(10). The upper auxiliary patterns(20) are close to the lower auxiliary patterns(30).
Patent KR-950013029-B1 (KR)
Title: Sizing machine
Inventor: PARK DONG-HUI
IPC: D06B1/00
Filed: 1993-07-14
Granted: 1995-10-24
Abstract: The controller, which calculates the amount of the sizing agent consumption based on the number, thickness and sizing speed of warp threads, the set rate of sizing, and density of the sizing agent to supply the agent in a predetermined amount of consumption whenever the surface level of the agent lowers to a certain level in a tank for automatic control, operates a fixed quantity pump to pump the agent out of the agent tank under the control of limit switches, one detecting the number of pumping actuations by a geared motor operating ON and OFF by the other limit switch.
Patent KR-960006511-B1 (KR)
Title: Car stereo having a detachable grille
Inventor: KIM JI-SUB
IPC: B60R11/02
Filed: 1993-08-27
Granted: 1996-05-17
Abstract: In a conventional device for detaching a car stereo having a box-type coupling unit, and a front panel which are jointed at a main body, the front panel locked by means of a locking arm, an eject knob with a spring which has a conical projection in the middle, and connected to a connection arm.
Patent KR-950009260-B1 (KR)
Title: A manufacturing method of fabric for air bag
Inventor: KIM HWANG-YONG
IPC: D06M15/693
Filed: 1993-09-02
Granted: 1995-08-18
Abstract: The coated fabric for the air bag of the automobiles is produced by (a) making a chloroprene rubber solution containing 0.5-10 PHR adhesive chloroprene rubber obtained by copolymerizing a heat-resistant chloroprene rubber with methylmethacrylate, (b) coating the rubber solution on the releasing paper by 0.01-0.2 mm thickness, and drying it to form a chloroprene rubber layer, and (c) laminating the rubber layer on the nylon fabric at a high temp. and pressure and bonding them.
Patent KR-960012645-B1 (KR)
Title: Method for forming the multilayer wiring of the semiconductor device
Inventor: LEE CHANG-SOO
IPC: H01L21/768
Filed: 1993-10-06
Granted: 1996-09-23
Abstract: patterning a certain pattern after the first metal layer(11) was formed on a semiconductor substrate(20); forming an insulating film alternatively on the certain first metal layer(11) which is patterned by an electro-chemical method; forming the second metal layer(13) to separate the first metal layer pattern by an insulating film(12); connecting the second layer with the first metal layer pattern electrically.
Patent KR-0136898-B1 (KR)
Inventor: SUMA KATSUHIRO
IPC: H01L21/822
Filed: 1993-10-29
Granted: 1998-05-15
Abstract: 외부 제어 신호(/RAS, /CAS, /WE, Ai)에 응답하여, 제 1 타이밍 검출 회로(112)와 고전압 검출 회로(111)는 시그너춰 모드의 설정을 검출하고 시그너춰 모드 신호(SIGE)를 제 2 타이밍 검출 회로(12)에 출력한다. 
     제 2 타이밍 검출 회로(12)는 출력 버퍼 활성화 신호(IVE)를 외부 제어 신호(/RAS, /CAS, /WE)에 응답하여 출력버퍼(2)에 출력한다. 
     출력버퍼 활성화 신호(IVE)에 응답하여, 출력버터(2)는 내부 전원 전압 (IVcc)를 검출하고 이를 외부핀(PD)에 출력한다.
Patent KR-960006095-B1 (KR)
Title: Optical pick-up apparatus using doppler effect
Inventor: HAN MAN-JOON
IPC: G11B7/09
Filed: 1993-11-11
Granted: 1996-05-08
Abstract: a lasing part which generates a beam; the beam splitter which divides the reflection beam from the recording medium; an optical detection part which detects the recoded data in the recoding medium; a reflection means which reflects the input light; a beam splitter divides the input beam into two part and it is coated specially to induce the light into the reflection means; the optical detection part induces the reference beam from the reflection method.
Patent KR-960010085-B1 (KR)
Title: Filament of cvd for diamond synthesis
Inventor: BAEK YOUNG-JOON
IPC: C01B31/06
Filed: 1993-12-24
Granted: 1996-07-25
Abstract: The CVD(chemical vapor deposition) for diamond synthesis contains the filament supported by fixing to both ends of the upper part of the substrate supporter in a vacuum chamber. The filament is double line filament made by processing spiral coil with several single lines and composed of tungsten. The filament is protected from transformation as it is made of double line.
Patent KR-960000324-B1 (KR)
Title: Method of preventing nozzle stop
Inventor: CHOE IN-SUB
IPC: B22D11/00
Filed: 1993-12-29
Granted: 1996-01-05
Abstract: keeping the oxidation rate of ladle slag (T.Fe+MnO+P2O5) to below 16.0%; inputting Fe-Si and Al of 0.015-0.03kg as a deoxidizer into molten steel of 1ton. The produced low silicon steel comprises C of below 100ppm, Si of below 0.5 wt.%, Mn of 0.15-0.25 wt.%, P of 0.05-0.07 wt.%, total Al of below 50ppm, and balance Fe with inevitable impurities.
Patent KR-100219765-B1 (KR)
Inventor: KRAMLING FRANZ
IPC: B60J1/00
Filed: 1992-06-10
Granted: 1999-09-01
Abstract: 적층 유리에 사용되는 유리 시트의 제조방법에 관한 것이다. 본 방법은 유리 시트를 차례로 곡선 경로를 따라 이동시킨 후, 취입실을 통해 유도함으로써 냉각시키고 마지막으로 조립실로 운송함으로써 유리 시트를 볼록하게 만드는 것을 포함한다. 본 발명은 또한 적층 유리, 중심영역이 1내지 50MPa의 코아 입압축 응력을 갖는 유리 시트에 관한 것이다.
Patent KR-0177844-B1 (KR)
Title: Antibacterial penem compounds
Inventor: IWATA HIROMITSU
IPC: A61P31/04
Filed: 1991-08-16
Granted: 1999-03-20
Abstract: PCT No. PCT/JP91/01099 Sec. 371 Date Feb. 19, 1993 Sec. 102(e) Date Feb. 19, 1993 PCT Filed Aug. 16, 1991 PCT Pub. No. WO92/03443 PCT Pub. Date Mar. 5, 1992.Antibiotic penem compounds are represented by the following formula:   <IMAGE>   wherein R represents a physiological-hydrolyzable, ester-forming group. The physiologically hydrolyzable, ester-forming group useful in the penem compound of the present invention means a group which can be removed easily by in vivo hydrolysis, such as an acetyloxymethyl, 1-(acetyloxy)ethyl, pivaloyloxymethyl, 1-(ethoxycarbonyloxy)ethyl, 1-(isopropyloxycarbonyloxy)ethyl, 1-(cyclohexyloxycarbonyloxy)ethyl or 3-phthalidyl group. Antibiotic compositions for oral administration are also described.
Patent KR-100260467-B1 (KR)
Inventor: JAMES B ROSS
IPC: F16L47/02
Filed: 1992-02-20
Granted: 2000-07-01
Abstract: 본 발명은 플라스틱 재료를 접합하는 시스템 및 방법에 관한 것으로서, 강자성체 재료(28)로 코팅된 전도성 와이어(26)로 제작되고, 와이어(58)사이의 공간의 면적과 그 공간을 둘러싸는 와이어 면적의 비가 4 : 1 이상인 히터들을 포함하고; 상기 히터는 접합되는 플라스틱 부재 사이에 위치한다. 
     히터들(58)은, 플라스틱들을 서로 용접해 주도록 유도가열에 의해 활성화된는 히터와 함께 하나 또는 두개의 끝부분으로 파이프를 받아들일 수 있도록 된 플라스틱 커넥터의 두 끝부분에 인접하여 위치한다. 히터의 한 형태는 와이어가 감기는 나선홈을 가지는 중공원통 심봉(16)과 심봉의 원주상에 축방향으로 뻗은 방사상의 구멍을 가지고, 그 각 구멍에서 나선홈에 감긴 와이어에 축방향으로 뻗은 와이어를 점 용접함에 의해 제작된다. 
     또한 와이어 링이 축상으로 뻗은 홈에 고정될 수 있다. 새들 피팅과 패치(148)들 또한 상기 히터를 사용한 파이프나 다른 플라스틱 부재에 적용할 수 있다. 클램쉘(43)과 턱 모양 구조체 형태의 유도코일이 상기 히터들을 활성화 시키는데 적절히 사용될 수 있고 유용한 코일 구조체 또한 사용될 수가 있다.
Patent KR-100222161-B1 (KR)
Inventor: STORSTROEM HELGE
IPC: B22F1/00
Filed: 1992-03-24
Granted: 1999-10-01
Abstract: 분말야금학적 혼합물과 이를 생산하기 위한 방법이 개재되어 있다. 기저 혼합물과 흑연, 구리. 니켈, 몰리브덴, 황화망간, 인산철등과 같은 첨가제, 그리고 임의적으로 윤활제에 부가하여, 상기 혼합물을 다음과 같은 일반식(I) 
       이고 
     여기에서, R 1 및 R 2 는 서로 같거나 서로 다르며 직쇄포화 OH-치환된 C 13 -C 24 -알킬기를 나타내고 Q는 이며, 또는 이며, n은 1 내지 10인 적어도 하나의 디아미드 왁스인 결합제를 포함하고 상기 결합제는 용융상태로 존재하고 이후에 첨가제의 분말입자와 기저금속입자를 서로 결합시키기 위하여 고체상태로 된다. 상기 혼합물을 생산할 때, 상기 결합제는 상기 혼합물에 첨가되고 균일한 혼합물은 혼합작업에 의해서 제공되며, 상기 균일한 혼합물은 혼합시키면서, 약 90 내지 160 까지 가열되어서 상기 결합제를 용융시키며, 이후에, 상기 혼합물은 상기 결합제가 응고될 때까지 혼합시키면서 냉각된다.
Patent RO-120955-B1 (RO)
Title: Hand device for stamping and forging metal profiles
Inventor: CHIOPU MIHAI MIRCEA
IPC: B21D22/14
Filed: 2001-12-06
Abstract: The invention relates to a hand device for stamping and forging metal profiles. According to the invention, the device is provided with a base plate (1) with a nut (2) rigidly fixed thereto, a horizontal screw (3) moving inside the said nut, said screw being manually driven by some handles (4) whereto there are mounted some inertial weights (5) operating a mobile beating head (6) also ensuring the guiding function, a loose beating punch (8) being attached on said beating head, plastically deforming the part to be worked, which is located between the loose beating punch (8) and a fixed beating punch (9), the part resting on a support (10), the entire device being attached on a work bench (11).
Patent RO-125964-B1 (RO)
Title: Process for producing steel shots by atomization of molten metal with pressurized air
Inventor: VASIU IOAN RADU
IPC: B22D27/13
Filed: 2010-02-17
Abstract: The invention relates to a process for producing steel shots by atomization with pressurized air. According to the invention, the process starts by making a steel charge from waste and casting the same at a temperature ranging between 1630...1650°C, in a casting funnel provided at its lower part with a nozzle wherefrom a vein of molten metal with a diameter of 10 mm flows to be guided into an atomization tower where the smelt is disintegrated under the action of the compressed air released by a multi-jet atomization device comprising 12 nose pipes, each of them having a diameter of 1.5 mm, which are circularly arranged so that the angle between the axis of the air jets and the smelting flowing direction is 10°, the flow rate of the compressed air is Qa=0.3...0.4 mm/min, at a pressure P=1...1.5 MPa, and after detachment, the particles get a spherical shape and drop from at least 2500 mm into a tank of cooling water located at the base of the atomization tower, where they are cooled down to a temperature of 50°C, after which they are subjected to a settling operation to eliminate the excess water and the shots are dried in a rotary gas furnace at a temperature of 150°C and then are classified by granulometric fractions.
Patent RO-127190-B1 (RO)
Title: Antimicrobial absorbing composition and use thereof
Inventor: ALBULESCU CARMEN
IPC: C05D1/04
Filed: 2010-09-16
Abstract: The invention relates to an antimicrobial absorbing composition employed in livestock farms. According to the invention, the composition exhibits a grain size of 2000 μm, at the most, and comprises 40...90% volcanic tuff, 8...58% limestone or dolomite-type carbonate and up to 1% tensides of the quaternary ammonia salts or isothiasolinone derivatives type, the percentage being expressed by mass.
Patent RO-127647-B1 (RO)
Title: Process for preparing methyl esters of sulphurized fatty acids, from fats
Inventor: STEPAN EMIL
IPC: C07C67/02
Filed: 2010-11-05
Abstract: The invention relates to a process for preparing methyl esters of sulphurized fatty acids to be used as wear-proof, oxidation-proof and extreme pressure additives in lubricating compositions. According to the invention, the process consists in dehydrating raw natural fats, purified or recovered from wastes, by heating them under vacuum, until reaching a water content of 0.05%, subjecting them to transesterification with methanol, in the presence of guanidine carbonate, at a temperature of 67...70°C, for 1 h, separating raw glycerine and raw methyl esters with guanidine content, subjecting them to sulphurization with sulphur, in the presence of an aminic catalyst, at 130...135°C, to result in a product which, after purification, has a sulphur content of 11.2...16.5%.
Patent SA-518391677-B1 (SA)
Title: High Temperature Crosslinked Fracturing Fluids
Inventor: B RAGHAVA REDDY
Filed: 2018-05-28
Abstract: A fracturing fluid including a mixture of an aqueous copolymer composition including a copolymer, the copolymer having 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, and acrylic acid monomer units, or a salt thereof, and a crosslinker. The crosslinker includes a metal, and the weight ratio of the metal to the copolymer is in a range of 0.01 to 0.08. Treating a subterranean formation includes introducing the fracturing fluid into a subterranean formation, and crosslinking the fracturing fluid in the subterranean formation to yield a crosslinked fracturing fluid. The crosslinked fracturing fluid has a viscosity of at least 500 cP for at least 80 minutes when the gel is subjected to a shear rate of 40 s-1 at a temperature in a range of 300°F to 400°F.
Patent SA-519410475-B1 (SA)
Title: Selective poisoning of aromatization catalysts to increase catalyst activity and selectivity
Inventor: FELTES THERESA E
Filed: 2019-11-03
Abstract: Spent aromatization catalysts containing a transition metal and a catalyst support are selectively poisoned in the disclosed reforming methods, resulting in improvements in overall aromatics yield and selectivity. Figure 1
Patent SA-519410521-B1 (SA)
Title: Device and Method for Microfluidics-Based 3D Bioprinting
Inventor: CHARLOTTE A E HAUSER
Filed: 2019-11-10
Abstract: The present invention relates to a device and a method for building a 3D object. The present invention further relates to a method of obtaining a hydrogel. Fig 1a.