baber/WOPTO huggingface dataset:
Patent KR-930003252-B1 (KR)
Title: Lcd memory device and manufacturing method
Inventor: COLES HARRY J
IPC: G02F1/137
Filed: 1984-09-14
Granted: 1993-04-24
Abstract: A liquid crystal information storage device comprising a layer of material containing a side chain polymeric liquid crystal. At least a part of the material is heated from a viscous state above its glass transition temperature, to a fluid region in which the liquid crystalline material can readily undergo field-induced alignment. The material is addressed in this fluid region so as to achieve the selective variation in texture and orientation of molecules within the material and so record information, and the material is subsequently cooled and returned to its viscous state whereupon the information is retained.
Patent KR-890003201-B1 (KR)
Title: Magnetic recording carriage
Inventor: ITTO TAKEO
IPC: G11B5/706
Filed: 1984-10-30
Granted: 1989-08-26
Abstract: Magentic recording medium is prepd. by dispersing hexagonal ferromagnetic powder (i.e. Baferrite, specific surface area 25-50 m2/ g, average grain size 0.05-0.2 micron and Hc 400-200 Oe) into resin binder.
Patent KR-900006630-B1 (KR)
Title: Apparatus and method for notching an optical fiber under controlling conditions
Inventor: TENBERGE EDVARDUS F A
IPC: G02B6/25
Filed: 1985-03-13
Granted: 1990-09-15
Abstract: An optical fiber are notched by an appts. having a fiber holder, a scribing ring, and fiber deflector. The scribing surface is spaced from the fiber holder by a distance which is less than the distance between fiber deflector and holder. The deflector moves laterally of the fiber axis and deflects the fiber. A notch is produced by threading the fiber through the holder, ring and deflector opening. The fiber is then flexed by an amt. sufficient to bring the notch against the circular edge of the scribing ring, then being moved along this edge through a prescribed angle. The fiber can be reproducibly notched for subsequent fracturing to produce smooth surfaces.
Patent KR-900008477-B1 (KR)
Inventor: MORIDA HIROYUKI
IPC: H04L27/22
Filed: 1985-05-31
Granted: 1990-11-22
Abstract: 내용 없음.
Patent KR-920010830-B1 (KR)
Inventor: KOIKE NORIO
IPC: H04N5/365
Filed: 1985-08-23
Granted: 1992-12-17
Abstract: 내용 없음.
Patent KR-930001514-B1 (KR)
Inventor: LUTON MICHAEL J
IPC: B22F3/20
Filed: 1985-12-28
Granted: 1993-03-02
Abstract: 내용 없음.
Patent KR-880002014-B1 (KR)
Title: Preteratment method of phosphorous acid salt treatment
Inventor: PARK CHAN-SOP
IPC: C23C22/78
Filed: 1985-12-31
Granted: 1988-10-12
Abstract: The method is for improving the adherence of paint on the steel plate by spraying on the plate or dipping it into a solution containing 3- 1000 ppm of magnesium ion and 10-100 ppm of titanium ionbefore phosphorous acidic salt treatement.  The MgS and Tis, pref., are used as material sources of Mg and Ti ions.
Patent KR-910008200-B1 (KR)
Inventor: SAKUYAMA NORIO
IPC: B60S9/02
Filed: 1986-02-22
Granted: 1991-10-11
Abstract: 내용 없음.
Patent KR-930003606-B1 (KR)
Title: Baths and process for chemical polishing of stainless steel surfaces
Inventor: TYTGAT DANIEL
IPC: C23F3/06
Filed: 1986-05-31
Granted: 1993-05-08
Abstract: Baths for chemical polishing of stainless steel surfaces, comprising, in aqueous solution, a mixture of hydrochloric acid, phosphoric acid and nitric acid, ferricyanide complex ions and an additive capable of decomposing nitrous acid. The baths can be used in particular for chemical polishing of heat exchangers with a very large exchange surface.
Patent KR-860001297-B1 (KR)
Title: Process for preparing 1-phenyl-2(1h,3h)-indolone derivatives
Inventor: HOWARD HARRY RALPH
IPC: C07D401/04
Filed: 1986-07-19
Granted: 1986-09-11
Abstract: Indolones I [A2=H, Me; B1, C1=H, C1-2 alkyl, Ph, benzyl; W=H, C1-2 alkyl, alkoxy, Cl, F; W1= X1= Y1=H, C1-2 alkyl, alkoxy, C1-4 alkylthio, Br, Cl, F, CF3, OH, formyl, carboxamido, etc.! were prepd. by phenylation of aminoalkylene indolones or by aminomethylenation of phenylindolones. They possessed neuroleptic activity and were useful in the treatment of schizophrenia, anxiety, and epilepsy. Thus, a mixt. contg. 2.45 mM 1-(3-chloro-4-methoxyphenyl)-2(1H, 3H)-indolone, 2.7 mM dimethylacetamide dimethylacetal, and 10 ml CHCl3 was refluxed for 3 hrs. under nitrogen to give 625 mg 1-(3-chloro-4-methoxyphenyl- 3-(1-dimethylaminoethyliden)-2(1H, 3H)-indolone.
Patent KR-900001977-B1 (KR)
Title: Ribbon controller of colour printer
Inventor: TAKETANI MITSUHIRO
IPC: G06K15/00
Filed: 1986-08-29
Granted: 1990-03-30
Abstract: An ink ribbon control appts. for a colour printer comprises a cartridge holder (42) movably installed with an ink ribbon cartridge (24) which has a number of colour bands (58A-58D) aligned to the lateral direction of a colour ink ribbon (28), colour shifting means (46,48,50) for selectively setting one of the colour bands at a required position, and a tensioner (51) for providing tension force to the ink ribbon responsive to the motion of the shifting means.
Patent KR-900000097-B1 (KR)
Title: Semiconductor device having silicon on insulator structure
Inventor: SIRATO DAKEHIDE
IPC: H01L27/12
Filed: 1986-10-23
Granted: 1990-01-19
Abstract: The semiconductor having an SOI structure comprises an insular single crystal silicon body formed on an insulator layer.  A first region of a first type semiconductor and source and drain regions of a second type semiconductor are provided in the insular single crystal silicon body so that the first region is provided between the source and drain regions.  A second region of the first type semiconductor is in contact with the first region formed along a side of the source and drain regions.
Patent KR-920005280-B1 (KR)
Inventor: JOYCE THOMAS F
IPC: G06F12/10
Filed: 1986-12-19
Granted: 1992-06-29
Abstract: 내용 없음.
Patent KR-900008808-B1 (KR)
Inventor: KOIGE HIROUKI
IPC: B29C33/42
Filed: 1986-12-19
Granted: 1990-11-30
Abstract: 내용 없음.
Patent KR-960000214-B1 (KR)
Inventor: MANEY GEORGE A
IPC: B65G49/07
Filed: 1985-07-29
Granted: 1996-01-03
Abstract: 내용 없음.
Patent KR-920010574-B1 (KR)
Inventor: STUTZ ANTON
IPC: C07C211/31
Filed: 1987-01-27
Granted: 1992-12-07
Abstract: 내용 없음.
Patent KR-930001610-B1 (KR)
Title: Refuse compactor and transfer chamber
Inventor: GARDELLA PETER
IPC: B30B9/00
Filed: 1987-04-02
Granted: 1993-03-06
Abstract: The disclosure relates to baling machines. A stationary chamber (l3) is located below an apron (ll) on which garbage and other refuse is dumped from collection trucks. An opening (4l) in the apron is aligned with an opening in the top of the chamber. The discharge end of the chamber is closed by a gate (36) which slants rearward at an angle of l5 DEG  to the vertical against which the refuse is compacted. The gate may be raised when the chamber is to be discharged. Reciprocating within the chamber is a platen (46) having its upper portion (48) slanted forward at about an angle of 42 DEG  The platen is driven by a multi-stage hydraulic ram (5l). Loads of about l5 cu. yds. are dumped into the chamber opening by a bulldozer (l2). The bulldozer operator by radio control causes the platen to move forward, compacting the first load to about one-half the original volume of the loose material. When the ram pressure reaches a predetermined pressure, the platen is automatically retracted. The operation is repeated until a predetermined weight has been received and compacted. Meanwhile a truck (l6) has been hitched to the end of the chamber. The operator then actuates controls at said panel. The gate (36) is raised by hydraulic cylinders (38) and the platen moved forward to push the compacted load out of the chamber through the back end of the truck and onto the bed of the truck. Each bale has longitudinal sides, top and bottom. The front end is slanted rearward about l5 DEG . The rear end has a vertical surface extending upward about half way, then a forward slanted surface at about 42 DEG  and then a short vertical top stretch; thus the rear of the baIe is complementary to the platen.
Patent KR-910003405-B1 (KR)
Inventor: SILVER PAUL A
IPC: C08F32/06
Filed: 1987-05-09
Granted: 1991-05-30
Abstract: 내용 없음.
Patent KR-920003592-B1 (KR)
Inventor: DOZO GENJI
IPC: F01C17/06
Filed: 1987-05-28
Granted: 1992-05-04
Abstract: 내용 없음.
Patent KR-900004667-B1 (KR)
Title: Smps circuit for high frequency
Inventor: KIM SANG-KYUN
IPC: H04N5/63
Filed: 1987-10-20
Granted: 1990-07-02
Abstract: The circuit includes a high frequency circuit having a transister (Q1), a capacitor (C2), and a resister (R2) for generating high frequency control signal utilizing fast rising time and falling time of the transister (Q4), a SMPS driver (2) for providing power to a primary coil (N1) of a SMPS switching transformer, and an output stage unit (3) having a primary coil (N5) controlled by switching of the first transister (Q1) so that controlled voltage is provided to an output circuit (5).
Patent KR-900004239-B1 (KR)
Title: Cut forming apparatus of figured yarn for silk fabric
Inventor: KIM YONG-HOON
IPC: D06C13/04
Filed: 1988-01-12
Granted: 1990-06-18
Abstract: The cutting apparatus cuts yarn in patterns and naises the cutt yarn vertically on the surface of silk fabric to give cubic effect to the patterns on the silk. The apparatus includes a plurality of support members fixed with cutters which are attachedd onto a driving chain. The silk fabric is passed through a gap between a base plate and the cutter fixed support members for the embroidered yarn to be cut by the cutter fixed in the recesses.
Patent KR-910001811-B1 (KR)
Inventor: HUKUHARA NOBUHIRO
IPC: C12N9/88
Filed: 1988-02-19
Granted: 1991-03-26
Abstract: 내용 없음.
Patent KR-910006992-B1 (KR)
Title: Process for the preparation of o,o-dialkyl-s-alkylthio methyldithio phosphoric acid ester
Inventor: KIM YUN-IL
IPC: C07F9/165
Filed: 1988-12-01
Granted: 1991-09-14
Abstract: A process for preparing O,O-dialkyl-S-alkylthio methyl dithio phosphoric acid  esters  of  formula  (I)  comprises  reacting  an aldehyde of formula R4CHO with O,O- dialkyl dithio phosphoric aicd of formula (II) and thioalcohol of formula HSR3 in the presence of catalysts at 10-70 deg.C. Pref. the primary catalyst is conc. HCl, and the secondary catalyst is conc. H2SO4. In the formulas, R1, R2 and R3 each= C1-4 alkyl; R4=H. (I) are useful as an insecticide.
Patent KR-940008983-B1 (KR)
Inventor: SATO MORIHIKO
IPC: C08L23/08
Filed: 1988-12-21
Granted: 1994-09-28
Abstract: 내용 없음.
Patent KR-920004962-B1 (KR)
Title: Evacuation system of semiconductor device for refractory metalfilm deposition
Inventor: CHANG WON-IK
IPC: H01L21/20
Filed: 1988-12-30
Granted: 1992-06-22
Abstract: The evacuation system for vapor deposition  of  the  metallic thin film i.e. tungsten or tengsten silicide, safely evacuates the posionous gas generated from  the  vapor  deposition.  The  system comprises a heating tape tube (6), connected to a shock  absorbing tube (1) of a reaction vessel (A), U-shaped tube (2) and  a  valve (3),  for  eliminating  non-reactive/explosive  SiH4  gas;  a  gas deoxidation trap  (4)  filled  with  stainless  steel  pieces  for eliminating non-reactive/corrosive WF6 gas; a gas absorption  trap (5)  filled  with  zeolite  for  absorbing  moisture  or  H2   gas molecules.
Patent KR-950006396-B1 (KR)
Inventor: SCHUKEY JUERGEN
IPC: F04C2/067
Filed: 1987-07-22
Granted: 1995-06-14
Abstract: 내용 없음.
Patent KR-0141602-B1 (KR)
Inventor: KOHLER MANFRED
IPC: C09D133/00
Filed: 1989-05-13
Granted: 1998-07-01
Abstract: 요약없음
Patent KR-970006903-B1 (KR)
Inventor: UESAKA TOSHIO
IPC: C08K5/13
Filed: 1989-05-26
Granted: 1997-04-30
Abstract: 내용없음.
Patent KR-0152980-B1 (KR)
Inventor: HAENGGI ROBERT A
IPC: E01F9/04
Filed: 1989-09-06
Granted: 1998-11-02
Abstract: 내용 없음.
Patent KR-960008284-B1 (KR)
Inventor: ICHIKAWA YUICHI
IPC: H03L7/099
Filed: 1989-09-18
Granted: 1996-06-21
Abstract: 내용 없음.
Patent KR-920005040-B1 (KR)
Title: Lcd projecter
Inventor: PARK HONG-CHOL
IPC: G03B23/00
Filed: 1989-10-05
Granted: 1992-06-25
Abstract: The LCD projector regulates the illuminance of red, green and blue colours by making  narrower  the  distance  between  a  light source and the colours' pannels. The LCD projector  comprises  the light source where a back view mirror (23),  a  lamp  (21)  and  a condensor lens (22) are coaxially arranged  in  the  direction  of minus X-axis, a dichroic mirror assembly (24) having a height,  an upper green mirror (26) arranged in  the  Z-axis  direction  of  a lower green mirror (26'), a green field lens (29) arranged in  the X- axis direction of the upper  green  mirror  (26),  a  green  LCD pannel (32) coaxially arranged in the same axis of the lens  (29), and a projection lens (34). The red-related and  the  blue-related LCD  panel/lens/mirrors  are  also  arranged  with   the   similar structure of the green-related devices.
Patent KR-920007948-B1 (KR)
Title: Rom writer
Inventor: KIM SONG-HAN
IPC: G06F13/00
Filed: 1989-12-31
Granted: 1992-09-19
Abstract: The ROM writer sends program and data file from a computer to the other computer or peripheral equippments with baud rate faster than RS-232C  type.  The  ROM  writer  includes  a  CPU  (10)  for controlling the system, a ROM (13) for storing program  for  power on diagnostic and for initializing  peripheral  devices,  a  timer (14) for providing real time clock, a serial I/O device  (15)  for sending parallel data and for receiving serial  data,  a  parallel I/O ports (16,17) for parallel communication between keyboard  and liquid crystal display, and a  CPU,  RAM  (25)  for  storing  data transmitted through a network temporary, a network controller (26) for selecting network control device according  to  network  being used, and a bus arbitration logic unit (24)  for  arbitrating  RAM access by processors.
Patent KR-910002559-B1 (KR)
Inventor: YASHIMA KENICHI
IPC: A61J3/00
Filed: 1987-12-19
Granted: 1991-04-26
Abstract: 내용 없음.
Patent KR-920002729-B1 (KR)
Title: Method of making figure on wooden board
Inventor: HAN UN-SOK
IPC: B44C1/00
Filed: 1990-02-19
Granted: 1992-04-02
Abstract: The method for forming a surface pattern is characterized  by (a) mixing an oil paint (A) with acetone (B) [mixing ratio of  (A) to (B) = 3:1 , and diluting the mixt., (b)  floating  the  diluted paint on the salt water to form an irregular pattern,  (c)  dippng the painting-treated and concavo-convex formed  basic  board  into the salt water by 20-45o inclination angle to adhere  the  floated pattern  on  the  surface   of   the   board,   (d)   drying   the pattern-adhered  board  at  30  deg.C  for   4-5   hr,   and   (e) surface-treating it with a transparent  paint  to  form  a  marble pattern.
Patent KR-0168423-B1 (KR)
Inventor: MAHANT-SHETTI SHIVALING S
IPC: H01J37/28
Filed: 1990-03-21
Granted: 1999-02-01
Abstract: 내용 없음.
Patent KR-920007803-B1 (KR)
Title: Process for manufacturing bowl
Inventor: SO JONG-HO
IPC: B21K21/00
Filed: 1990-05-07
Granted: 1992-09-17
Abstract: The vessel is  designed  to  present  a  good  appearance  of brassware having a pattern in relief  or  incision  on  the  outer surface while the stainless lining provides a rust-free vessel for food. The brass vessel is made of two  pieces,  upper  and  lower, which are cast in respective molds and joined by screw engagement, whereas the stainless lining is formed by a deep  drawing  and  is placed on the inner side of the brass pieces before joining  them. With the brass vessel assembled  into  one  piece,  the  stainless lining is spinned to make it tightly fit on to the inner  wall  of the brass and the top rim projecting in extension over  the  brass mouth is bent to cover the  brass  rim  with  the  stainless  edge fitting in a groove  of  the  brass  rim  outer  face  for  secure joining.
Patent KR-940007966-B1 (KR)
Inventor: TROUT TORENCE J
IPC: G03F7/027
Filed: 1990-06-21
Granted: 1994-08-31
Abstract: 내용 없음.
Patent KR-0148691-B1 (KR)
Inventor: KOO JE-KIL
IPC: H04J99/00
Filed: 1990-07-07
Granted: 1998-08-17
Abstract: 내용없음
Patent KR-940004648-B1 (KR)
Inventor: OAKS RICHARD W
IPC: F42B15/01
Filed: 1990-07-20
Granted: 1994-05-27
Abstract: 내용 없음.
Patent KR-920007273-B1 (KR)
Inventor: INADA KATSUYOSHI
IPC: C07H15/04
Filed: 1990-08-01
Granted: 1992-08-29
Abstract: 내용 없음.
Patent KR-930001383-B1 (KR)
Title: New microoganism bacillus subtilis subspecies
Inventor: BOK SONG-HAE
IPC: A61P31/04
Filed: 1990-10-31
Granted: 1993-02-27
Abstract: Biologically  pure  cultures  of  Bacillus  subtilis  subsp. Krictiensis (ATCC 55079) and of its mutant M18-91 (ATCC 55078) are new. The new microorganisms produce the antifungal complex KRF-001 which is useful as an agricultural or therapeutic fungicide,  food preservative or skin moisturizer. KRF-001 is an  oligopeptide  and has a broad spectrum of activity and low toxicity.
Patent KR-930003847-B1 (KR)
Title: The method for detoxification of aconiti tuber
Inventor: KWAK UI-JONG
IPC: A61K36/714
Filed: 1990-12-21
Granted: 1993-05-14
Abstract: A method for treating Aconiti tuber  comprises  (a)  leaching Aconiti tuber powder in distilled water for 10-20  hrs.,  and  (b) treating it with microwave for 5-15 mins. Pref. the wavelength  of the microwave is about 2450 MHz. The toxicity of Aconiti tuber  is reduced  by  deacetylation,  debenzoylation   and   oxidation   of aconitine alkaloids in the method. Aconiti tuber is  useful  as  a cardiotonic, a diuretic or an  analgesic;  and  has  highly  toxic alkaloids i.e. higenamine, aconitine, mesaconitine,  hypaconitine, etc.
Patent KR-930008564-B1 (KR)
Title: Angle measuring divice
Inventor: LEE HYOK-KI
IPC: G01B11/26
Filed: 1990-12-28
Granted: 1993-09-09
Abstract: The inspecting apparatus measures the precision of  machinery parts linearly moving by radiating helium neon  laser  beam  at  a reference position, and  diplaying  the  intensity  of  the  light reflected by the moving  distance.  The  apparatus  comprises  the laser beam generator (1) generating the helium neon  laser  and  a detector (2) receiving the reflected laser beam. The detector  (2) includes a prism (4) vertically reflecting the laser beam  emitted from the generator (1); photo-sensing  elements  transferring  the sensed lights into electric signals; amplifiers (7,8);  displayers (7,8) displaying analog  or  digital  values  from  the  amplified signals.
Patent KR-940009720-B1 (KR)
Title: Account recording apparatus of magnetic card
Inventor: YU WAN-DONG
IPC: G06K17/00
Filed: 1990-12-28
Granted: 1994-10-17
Abstract: The apparatus records the amount of money desired on the magnetic card instantly so as to be re-used instantly. In the apparatus, to one interface circuit a card sensor, a playback and record controller and a motor controller are connected respectively; to another interface circuit a paper money sensor, a money amount discriminator and an A/D converter are connected; and to the other interface circuit a display apparatus, a light emitting diode (LED) and a keyboard are connected.
Patent KR-930011141-B1 (KR)
Title: Motion detecting circuit of picture image signal
Inventor: HONG SAM-PYO
IPC: G08B13/194
Filed: 1990-12-31
Granted: 1993-11-24
Abstract: The circuit for converting  a  video  signal  output  from  a monitoring camera into digital data. The  digital  data  or  video data being stored by one frame and the current input video data is compared with the stored video data to detect a portion  different from each other as the variation  of  video  information.  If  the video  information  variation  detecting   circuit   detects   the variation of video information in the set window area, outputs  an alarm control signal and generates a variation  indicating  marker signal corresp. to the  variation  detected  portion  in  the  set window area, such that the marker signal is overlap  displayed  on the current picture  on  the  screen  corresp.  to  the  variation detected portion in the window area.
Patent KR-960016027-B1 (KR)
Inventor: WATANABE KIKUO
IPC: B29C45/17
Filed: 1989-07-27
Granted: 1996-11-25
Abstract: 내용없음.
Patent KR-930007901-B1 (KR)
Title: Apparatus for checking a picture of crt
Inventor: LEE SANG-ROK
IPC: H01J9/42
Filed: 1991-04-04
Granted: 1993-08-21
Abstract: The picture displayed on a cathod ray tube is captured  by  a camera and the captured picture is displayed on a monitor so as to improve working environment.  The  apparatus  includes  a  picture signal generator (2) for generating test pattern signal of a  CRT, a picture detector (4) for detecting  a  picture  displayed  on  a monitor, and a color monitor (3) for displaying detected  picture. The picture detector is cylindrically shaped and a camera (41),  a magnifying lenz (43) and  a  focus  adjusting  knob  is  deposited inside the cylinder.
Patent KR-940008551-B1 (KR)
Title: In-situ doping method in semiconductor
Inventor: KIM JAE-JONG
IPC: H01L21/24
Filed: 1991-04-12
Granted: 1994-09-24
Abstract: The method is useful to deposit high quality thin films for blue light emitting diodes. The method manufactures n-type ZnSe thin film from diethylselenide and Zn-N metal organic source by using MOCVD.
Patent KR-930008963-B1 (KR)
Title: Load-carrier
Inventor: YUN YONG-SU
IPC: B65G47/00
Filed: 1991-06-24
Granted: 1993-09-17
Abstract: The device for clamping products arranged in  multiple  lines and rows in order to transfer to a certain position, has  a  drive section and a plurality of racks and pinions. The device comprises a pair of racks (4) moved back and forth by  a  drive  section;  a plurality of  pinions  (6)  rotated  by  the  interlocking  racks; cam-follower (8) rotating with the pinion; cam follower guide  (9) linearly moved by the cam follower; support  bearing  (10)  moving along clamping shaft (11) with  the  guide  (9);  left  and  right fingers (13)(14) fixed on the support bearing.
Patent KR-940001768-B1 (KR)
Inventor: HARA AKIKUNI
IPC: A61N1/04
Filed: 1991-09-06
Granted: 1994-03-05
Abstract: 내용 없음.
Patent KR-950009048-B1 (KR)
Inventor: MURATA SHIGEMI
IPC: F02P7/03
Filed: 1991-10-10
Granted: 1995-08-14
Abstract: 내용 없음.
Patent KR-970000588-B1 (KR)
Title: Microorganism producing gmp
Inventor: HAN JONG-KWON
IPC: C12N1/20
Filed: 1991-10-31
Granted: 1997-01-14
Abstract: 5'-Guanylic acid-producing microorganism(KCCM 10012) is claimed. This microorganism which belongs to a variant of Brevibactirum ammoniagenes has the enhanced activity of XMP aminase for converting  5'-xanthylic acid to 5'-guanylic acid, has the character of the susceptibility to surfactant which is added therein and the resistance to hydroxylamine.
Patent KR-940011275-B1 (KR)
Title: Laser diode and manufacturing method the same
Inventor: KIM KI-HWAN
Filed: 1991-11-19
Granted: 1994-12-03
Abstract: A laser diode includes a first conductive semiconductor substrate, insulating layers formed in stripe on a predetermined portion of the substrate, a first clad layer having reverse mesa shape, which is formed on a portion of the substrate in which the insulating layer is not formed, an active layer formed on the first clad layer, a second clad layer having flat surface, which is formed on the active layer, triangle-shape voids formed on the active layer, which is formed due to the reverse slope of the active layer, a cap layer formed on the second clad layer, a second conductive electrode formed between the voids placed on the cap layer, and a first conductive electrode formed on the back surface of the substrate.
Patent KR-950005379-B1 (KR)
Title: Preparation of derivatives of benzo phenone
Inventor: LEE SAN-KU
IPC: C07C49/467
Filed: 1992-01-11
Granted: 1995-05-23
Abstract: The preparation method of benzophenone (I) derivatives consists of (1) reacting benzoate and resorcinol in phosphorus oxychloride (II) as solvent and polyphophoric acid and zinc chloride as catalysts at 50-60'C for 0.5-2 hrs to form tetrahydroxy benzophenone (III), (2) adding active carbon or zinc to (III) to form (I). (II) is recovered after the reaction and recycled in next reaction. (I) is useful as uv absorbing agents in plastic, adhesives, paint and cosmetics.
Patent KR-950000467-B1 (KR)
Inventor: CHANG SHI-CHANG
IPC: C02F1/30
Filed: 1992-01-25
Granted: 1995-01-20
Abstract: 내용 없음.