baber/WOPTO huggingface dataset:
Patent KR-800001541-B1 (KR)
Title: Small printing apparatus
Inventor: USUI KIYOFUMI
IPC: B41K3/08
Filed: 1977-06-11
Granted: 1980-12-20
Abstract: A small printer for using to the portable or table calculator and increasing an energy efficiency devides the motive power of the energy storaging means generating from manual operations or motor into the type selection energy from the type drum, typing energy and web feeding energy.  the rotatable transporting member. The closure is cleaned by ejecting the cleaning liquid from each ejector(30a, 30b, 30c) towards it.
Patent KR-790001618-B1 (KR)
Title: Method of manufacture for tile of glass
Inventor: KIM KAB JIN
IPC: C04B/
Filed: 1978-05-01
Granted: 1979-11-23
Abstract: A method for manufg. glass tiles having properties similar to those of cement tiles or porcelain tiles, where a glass plate could be attached to a granular stone layer, was described.  A granular glass having <800≰C m.p., was scatted on the back of the glass plate having >800≰C m.p., and was laminated with a granular stone layer.  The granular glass layer was heated up to m.p.
Patent KR-830001517-B1 (KR)
Title: 디메틸 테레프탈레이트의 가수분해에 의한 테레프탈산의 제조방법
IPC: C07C51/09
Filed: 1980-03-05
Granted: 1983-08-08
Abstract: 내용 없음.
Patent KR-830001935-B1 (KR)
Title: 전압 비교기
IPC: H03K5/08
Filed: 1980-03-08
Granted: 1983-09-23
Abstract: 내용 없음.
Patent KR-810000915-B1 (KR)
Title: Luminecence lamp for emergency
Inventor: KIM DOO NYUN
IPC: F21K2/06
Filed: 1980-03-24
Granted: 1981-08-19
Abstract: When the power is off, this lamp works right away, As the current is off the electromagnet (3) is suspended and come down with the hook (3").  As the gear (4) rotates clockwise, the valve(7) is opened by lifting the lever.  The tanks (1,2) is opened through the pipeline (8) and esters(1') and peroxide (2') flow into the luminecence lamp (9) through the pipeline (8').  The esters and peroxide interact and light up.
Patent KR-880000621-B1 (KR)
Title: Precess for rendering polymers resistant to ionizing radiation and compositions obtained thereby
Inventor: KORNBAUM SIMON
IPC: C08L27/00
Filed: 1981-10-12
Granted: 1988-04-18
Abstract: A resistance to ionization-radioactive ray is rendered by addn. of heat stabilizing agent contg. org. Sn or Sb, mercaptane and hydroquinone according to formula RCH(SH)-(CH2)n-COOR', R(CH2)m- COOR"SH or HS-(CH2)x-Z-(CH2)y-Z-(CH2)x-SH to a polymer contg. halogen in mol..  In the formulas, R=H or C1-20 alkyl, R'=C1-18 alkyl or alkenyl, R"=C1-18 alkylene or alkenylene, m and n=0-6, Z=- COO-, [C is bonded with C of (CH2)x or (CH2)y ; X=1-9; y=1-18; 2x+y>=4; (CH2)x and (CH2)y are accompanied with subst. or not.
Patent KR-840001342-B1 (KR)
Title: Process for the removal of the formyl group from n-formyl peptides and esters thereof
Inventor: GIOBBIO VINCENZO
IPC: C07K1/12
Filed: 1982-05-13
Granted: 1984-09-19
Abstract: Formyl group was removed from the reaction product obtained by the reaction of N-formyl peptide or its ester and hydrazine or I (R=C1-5 alkyl, cycloalkyl, arylamino group), at 20-150≰C, pH 1-3.5 in solvent contg. -C1-5 alcohol.  Thus, 3.2g N-formyl-α-L-aspartyl-L-phenyl alanin methylester in 32ml EtOH was mixed with 3.2ml H20 and adjusted to pH 2 with 0.5ml 3% HCl.  The mixt. was heated to 70≰C and adjusted to pH 1.5-3.0 with 3% HCl again to give α-L-aspartyl-L-phenyl alanine-methyl ester.
Patent KR-910001195-B1 (KR)
Inventor: STUBBLEFIELD JERRY D
IPC: A43B5/02
Filed: 1983-08-18
Granted: 1991-02-26
Abstract: 내용 없음.
Patent KR-890002565-B1 (KR)
Title: Method for preparing high adhesive polyolefin
Inventor: ISAKA TSUTOMU
IPC: B29C59/12
Filed: 1983-10-07
Granted: 1989-07-18
Abstract: A process for enhancing an adhesion property of a shaped polyolefin surface comprises applying a corona discharge to the surface under continuous movement between two suitable electrodes, and spraying the surface in the corona discharge with an inert gas, pref. nitrogen.
Patent KR-840000992-B1 (KR)
Title: Process for preparing imidazo diazepin derivatives
Inventor: FELY WILLY HAE
IPC: C07D487/14
Filed: 1984-05-24
Granted: 1984-07-13
Abstract: Title compds. (I; A = a, b, c; R5 = H, CF3, halogen; R6 = H, CF3, halogen, lower alkyl; R2 = H; R3 = lower alkyl; R2R3 = (CH2)3, CH:CHCH2: R4 = Me, Et, iso-Pr, 2-hydroxyethyl; D = >C=0, >C=S) were prepd. by trans-esterification of XI R7 = lower alkyl. Thus, 24 g 5-fluoroisatoic anhydride was treated with 11.8 g sarcosine, and stirred at 100oC for 1.5 hr to give I(m.p. 262-263oC). I had a diazepam antagonist ED50 at 5.8 mg/kg orally in mice.
Patent KR-920004104-B1 (KR)
Inventor: HAFERL PETER E
IPC: H04N3/18
Filed: 1984-06-29
Granted: 1992-05-25
Abstract: 내용 없음.
Patent KR-890004612-B1 (KR)
Title: Electronically controlled suspension system
Inventor: KUMAGAI NAOTAKE
IPC: B60G17/017
Filed: 1984-07-25
Granted: 1989-11-20
Abstract: An electronically controlled vehicle suspension system that can be switched between a hard and a soft state has a mode selection switch that permits an alternative choice between a hard mode that puts the suspension in the hard state and an automatic mode that automatically puts the suspension into the soft or hard state depending upon the vehicle conditions.  A control device is also provided that puts the suspension in the automatic mode, in preference to the mode to which the mode selection switch has been set, when the engine key switch is turned on for the start.
Patent KR-870001496-B1 (KR)
Title: Bag making device for automatic filling machine
Inventor: SATO HARUO
IPC: B65B9/20
Filed: 1984-09-15
Granted: 1987-08-19
Abstract: The heat flexible film(1) is delivered to the forming plate (3) through the multiple idle rollers(21,22,23) then made to a cylinderical shape.  The size of the bag is controlled by the size ring, which is provided with the fixed electrode(61) under the stopper nozzle(5).  The film contacting portion is attached continuously between the fixed electrode and the pressing electrode (62).  The drawing roller(41), which is provided with a stopper nozzle exit, draws this bag and this bag is filled by the nozzle (5).  The fixed electrode(61) is provided on the lower radius of the forming plate with some clearance to the stopper nozzle.
Patent KR-910001247-B1 (KR)
Inventor: GOBAYASI DAKAYOSI
IPC: G01N21/956
Filed: 1984-09-15
Granted: 1991-02-26
Abstract: 내용 없음.
Patent KR-920001459-B1 (KR)
Inventor: KOHICHI USHIMIRU
IPC: C07D211/90
Filed: 1984-11-15
Granted: 1992-02-14
Abstract: 내용 없음.
Patent KR-930003207-B1 (KR)
Inventor: MARTIN DRIGGERS J
IPC: H05B3/46
Filed: 1985-01-16
Granted: 1993-04-23
Abstract: 내용 없음.
Patent KR-930009481-B1 (KR)
Inventor: SUKIURA JUN
IPC: H01L27/112
Filed: 1985-02-18
Granted: 1993-10-04
Abstract: 내용 없음.
Patent KR-930005574-B1 (KR)
Inventor: GJERTSEN ROBERT K
IPC: G21C3/328
Filed: 1985-07-02
Granted: 1993-06-23
Abstract: 내용 없음.
Patent KR-930000331-B1 (KR)
Inventor: BINGHAM WALLACE K
IPC: A41D13/01
Filed: 1985-07-29
Granted: 1993-01-16
Abstract: 내용 없음.
Patent KR-900004026-B1 (KR)
Title: Video signal emphasis circuit
Inventor: MIURA GUNIAGI
IPC: H04N5/923
Filed: 1985-09-23
Granted: 1990-06-09
Abstract: An arithmetic circuit (2,3) adds a feedback signal to an input video signal (e1). A circuit (1) delays the output (e2) of the arithmetic circuit by a predetermined time (T) to generate a delayed output signal (e3) which provides the feedback signal. A second arithmetic circuit (5) produces a signal (e4) indicative of the amplitude difference between the output of the first arithmetic circuit and that of the delay ciruit. A linear amplifier circuit (6) adjusts the magnitude of the amplitude difference signal applied from the second arithmetic circuit to a predetermined level. A third arithmetic circuit (7) produces an output video signal (e0) by adding the output (e5) of the linear amplifier circuit to the input video signal (e1).
Patent KR-890000414-B1 (KR)
Title: A circuit generating control clock in signal synchronism and decoding
Inventor: PARK YONG-WOO
IPC: H04L25/38
Filed: 1985-11-14
Granted: 1989-03-16
Abstract: The cct. for providing control clock in a telephone exchanging system operated by TCN method comprises a receving data detection cct. (1) for receiving data (RXD)/clock (CKF) signals and providing a detecting pulse series (RPO) as a clock pulse (CKF) under control of a transmitting enable signal (TXEN), a synch. control cct. (2) for providing a synch. control signal (SCS)/reverse synch. control signal (SCS), a counter (3) for providing a pulse dividing signals, a decoder (4) for providing a signal separation control clock, and a signal selection clock generating cct. (5) for providing various control signals (SSVCK, VCK, DCK).
Patent KR-930006367-B1 (KR)
Inventor: BURLEIGH MALCOLM B
IPC: A61L15/24
Filed: 1985-12-04
Granted: 1993-07-14
Abstract: 내용 없음
Patent KR-940008100-B1 (KR)
Inventor: SHIMADA GEIICHIRO
IPC: H04L12/40
Filed: 1985-12-12
Granted: 1994-09-02
Abstract: 내용 없음.
Patent KR-930003609-B1 (KR)
Title: A process for producing polypeptide bearing the surface antigen of the hepatitis b virus and the receptor for polymerized human serum albumin
Inventor: SOBCZAK ELIANE
IPC: C12N15/51
Filed: 1985-11-06
Granted: 1993-05-08
Abstract: Compsn. for vaccine prodn. comprises (or contains) polypeptide particles which are practically spherical (at least those having immunogenic and immunological characteristics of hepatitis B surface antigen) with diam. 18-25 (pref. 20-22)nm and density allowing sepn. in a density region 1.2-1.22 g/ml in a CsCl gradient. The compsn. is totally free of Dane particles and of envelope antigen (including core antigen), and the particles also contain a receptor for polymerised human albumin. Also new are (1) vectors for transforming eucaryotic cells contg. a DNA sequence coding for the S and pre-S regions of HBV under direct control of an exogenous promoter which is very efficient for expression in the intended animal host cells and (2) animal cell lines transformed with these vectors.
Patent KR-900007874-B1 (KR)
Title: Process for the preparation of difunctional and monofunctional perfluoropolyether having brominated terminal group and regulated molecular weight
Inventor: VIOLA JEAN T
IPC: C08G65/00
Filed: 1986-02-24
Granted: 1990-10-22
Abstract: A perfluoropolyether of formula (I) is prepd. by UVphotolying the prod. obtd. from the photochemical oxidn. of C2F4 and/or C3F6 in the presence of Br at -40-130 deg. C. The Br concn. can saturate the liq. reaction medium. In (I), m, n, r and p are each 0-50; m+n+r+p is at least 2; A and B are each -CF2X, -CH2CF2X, -C(CF3)FX, -CF2, -COF, -CF2COF or -C(CF3)FCOF; X is F or Br.
Patent KR-900008145-B1 (KR)
Title: Method and system for displaying images in adjacent display area
Inventor: IIDA HIROYASU
IPC: G09G1/00
Filed: 1986-02-27
Granted: 1990-11-03
Abstract: The display method comprises the steps of storing boundary data for determining a boundary between row adjacent display areas for each of a number of display rows at each entry of a row table storage. The boundary data corresponding to each display row is fetched to a counter prior to displaying an image of each display row. There is the step of counting, until reaching a boundary value in the fetched boundary data, the number of display elements in the corresponding row for the display area associated with the boundary value. The image display is switched between adjacent display areas for each display row in response to completion of the counting step based on the fetched boundary data.
Patent KR-940006389-B1 (KR)
Title: Tracking cpmtrpl apparatus using pilot signals and position detecting signals of various lengths
Inventor: YAMADA MAKOTO
IPC: G11B15/467
Filed: 1986-10-08
Granted: 1994-07-20
Abstract: A tracking control apparatus for controlling tracking alignment of a rotary head (1A,1B) with respect to record tracks appearing in succession on a record medium (2) and in each of which there are recorded, at predetermined positions varying from track to track in accordance with a predetermined repeating sequence, pilot signals (P) for controlling tracking and position detecting signals (S,T) having different recorded lengths and which identify the positions of the pilot signals (P). A position detecting signal detector (34) and a counter (36) detect the recorded length of each position detecting signal (S,T), and an identifying signal generator (37) provides an identifying signal (S12) for identifying the recorded length of the position detecting signal (S,T) recorded in a track being traced by the rotary head (1A,1B). A sampling signal (SP1,SP2) is generated in response to the identifying signal (S12) for sampling a pilot signal (P) reproduced as cross-talk from an adjacent track so as to reduce the pull-in time of the tracking alignment operation.
Patent KR-890003546-B1 (KR)
Title: Method for preparing polyester composition
Inventor: HONG WOO-SUNG
IPC: C08L3/20
Filed: 1986-12-18
Granted: 1989-09-23
Abstract: The colored polyester resin having good dispersion property, is prepd. by adding 0.01-10 wt.% anti-static agent (I;R=C3-30 alkyl, higher alkyl; M=H+ Na+, K+, NH4+ Ca++) as dispersion agent to the mixt. of polyester and coloring material.  Wherein, the anti-static agent is one or more of sufonate, carbonylate, hydrogen sulfonate and phosphonate.  Thus, 0.5 wt.% phenylenic red pigment, 0.5 wt.% alkylbenzene sodiumsulfonate and 1 wt.% tinatatnic coupling agent, are mixed with 100 wt.% polyethylene terephthalate followed by compounding with 30 wt.% glass fiber at extruder to give polyester pellet.
Patent KR-890001416-B1 (KR)
Title: Method for preparing vinyl mat for heating pad
Inventor: HONG SA-SE
IPC: A61F7/08
Filed: 1986-12-19
Granted: 1989-05-03
Abstract: Place vinyl sheet (3) on lower vinyl sheet (2), high frequency heating to form regular intervals of adhesion line (4), cut the sides of adhesion line (4) of vinyl sheet (3) and stand them to form partition walls, place vinyl sheet (1) on the upper of cutting parts and high frequency heating to form a no. of vacant rooms (5), unite an inlet for air or hot water and melt-sealing all end-sides of vinyl sheets (2,3) to give vinyl mat.
Patent KR-910008811-B1 (KR)
Inventor: OZAKI YOSIHIDE
IPC: G01D21/02
Filed: 1987-01-06
Granted: 1991-10-21
Abstract: 내용 없음.
Patent KR-900008567-B1 (KR)
Inventor: MEANWELL NICHOLAS A
IPC: A61K31/47
Filed: 1987-05-22
Granted: 1990-11-24
Abstract: 내용 없음.
Patent KR-950012653-B1 (KR)
Title: Sorting and orienting apparatus
Inventor: MOSER THEO
IPC: B65B35/56
Filed: 1987-08-07
Granted: 1995-10-19
Abstract: Apparatus for selecting elongate containers from a mass of randomly-disposed containers such as capsules open at one end and at least partially closed at the other and depositing them with their open ends aligned for receiving a charge of material. The apparatus including first and second rotors, the first rotor including radially-disposed bores for receiving the containers and the second rotor including radially-disposed spokes for receiving containers with open ends toward the spokes. The first and second rotors including operable elements for removing the containers from the bores or spokes for transfer of the containers to a receiving device with the containers in the same orientation.
Patent KR-890004028-B1 (KR)
Title: Cloning vector for nocardia sp.
Inventor: CHOI KWANG-PIL
IPC: C12N15/00
Filed: 1987-09-07
Granted: 1989-10-16
Abstract: The method of preparing recombinant cloning vector for Nocarding sp. comprises: (a) culturing N mediterranei in Yu medium and centrifuging culture broth; (b) washing the pellet with buffer solution containing 24mM tris-cl, 10mM EDTA-Na2 and 50mM Glucose; (c) suspending the pellet in 7ml of buffer solution and adding lysozyme to the suspension; (d) mixing 1.4ml of 25% SDS and 7ml of 0.36N NaOH with above solution; (e) centrifuging the solution and washing the obtained DNA with 20ml of 70% ethylalcohol; (f) treating the DNA with restriction enzyme; (g) analyzing DNA fragments by agarose gel electrophoresis.
Patent KR-950007642-B1 (KR)
Inventor: WHITE MILTON R
IPC: A42B3/06
Filed: 1987-10-30
Granted: 1995-07-13
Abstract: 내용 없음.
Patent KR-960016126-B1 (KR)
Title: Epoxidized iso cyanates and process for their preparation
Inventor: WATERMAN PAUL SHELDON
IPC: C08G59/02
Filed: 1987-11-03
Granted: 1996-12-04
Abstract: A process is disclosed for preparation of novel epoxy-substituted aralkyl isocyanates by reaction of tertiary aralkyl olefins and an eposidizing agent at a temperature of from -35 DEG C to about 50 DEG C. The compounds are useful as intermediates to produce curing agents for polyfunctional active hydrogen-containing compounds, e.g., by reaction with polyols to produce epoxy-pendant urethanes and then with polyamines, and the like.
Patent KR-950003055-B1 (KR)
Inventor: RICHTER PAUL A
IPC: F01B9/04
Filed: 1986-10-10
Granted: 1995-03-30
Abstract: 내용 없음.
Patent KR-920002046-B1 (KR)
Inventor: SAKASHITA SEICHI
IPC: H03D5/00
Filed: 1988-01-20
Granted: 1992-03-10
Abstract: 내용 없음.
Patent KR-960007693-B1 (KR)
Inventor: GOSHIMA TOSHIO
IPC: A01N47/16
Filed: 1988-04-08
Granted: 1996-06-08
Abstract: 내용 없음.
Patent KR-910002814-B1 (KR)
Inventor: OKKUYAMA YASUSHI
IPC: H01L27/10
Filed: 1988-04-13
Granted: 1991-05-04
Abstract: 내용 없음.
Patent KR-960010353-B1 (KR)
Title: Thiadiazole guanidines and its preparation and its use
Inventor: TURNER STEPHEN
IPC: C07D285/12
Filed: 1988-04-21
Granted: 1996-07-30
Abstract: Thiadiazole guanidines of formula 1 <CHEM>  wherein R is hydrogen or C1-4 alkyl and their non-toxic salts. Processes for their preparation and pharmaceutical compositions thereof. The compounds exhibit anti-convulsant activity and are indicated for use in the treatment of epilepsy.
Patent KR-900006863-B1 (KR)
Title: Process for making beverage
Inventor: BAEK YUN-HWA
IPC: A23L2/38
Filed: 1988-06-17
Granted: 1990-09-24
Abstract: A process for making beverage containing Sikhye (Korean fermented sweet rice drink) comprises (a) adding 1-4% of sucrose or maltose, 0.1-0.2% of sodium chloride or pottassium chloride etc. to the Sikhye and dissolving and (b) adjusting the beverage to pH 3.5 by using citric acid, sodium citric acid or lemon juice. The beverage containing Sikhye is isotonic solution.
Patent KR-960012065-B1 (KR)
Inventor: IIDA YOSHIMITSU
IPC: A61K47/06
Filed: 1988-07-25
Granted: 1996-09-12
Abstract: 내용없음
Patent KR-920001160-B1 (KR)
Title: On-screen display recording method for vtr
Inventor: WOO JONG-SAM
IPC: G11B20/10
Filed: 1988-07-28
Granted: 1992-02-06
Abstract: The circuit selects the on screen letters and records them on a  tape  utilizing  color  signals.  The   circuit   comprises   a microcomputer (11) for checking that the on screen letter is to be recorded and for transmitting on screen letter information,  color information, and strobe signals, an  on-screen  circuit  (12)  for generating color signals and  a  first  switching  control  signal according to the color information, a first video switch (13)  for mixing video signal transmitted from an  external  input  terminal (IT) and R,G,B signal transmitted from the on screen circuit  (12) to generate monitor signal to be transmitted to a  CRT,  a  second video switch (14) for switching the color signal so that the color signal is mixed with the video signal or not,  and  a  multiplexer (15) for controlling the second video switch (14) according to the logic state of color signal.
Patent KR-970010865-B1 (KR)
Title: Full oil additives
Inventor: TACK ROBERT DRYDEN
IPC: C10L1/14
Filed: 1988-11-02
Granted: 1997-07-01
Abstract: A liquid hydrocarbon particularly fuel oil containing an amine-salt having the formula <CHEM> wherein R,R<1> and R<2> are hydrogen or a hydrogen - and carbon-containing group; R<3> and R<4> are hydrogen or hydrogen - and carbon containing groups containing at least 12 carbon atom; R<5> is a hyrdrogen-and carbon-containing group containing at least 12 carbon atoms; <CHEM> where R<6>, R<7>, R<8>, R<9>, R<1><0>, R<1><3>, R<1><4>, R<1><5> and R<1><6> are hydrogen or hydrogen and carbon containing groups, provided R<6> and R<1><2> cannot both be hydrogen; and R<1><1> and R<1><7> are hydrogen - and carbon containing groups; provided that R<3>, R<4>and R<5> cannot all be alkyl groups.
Patent KR-930005877-B1 (KR)
Title: Electron gun for color display tube
Inventor: KO NAM-JE
IPC: G11B15/14
Filed: 1988-11-30
Granted: 1993-06-25
Abstract: The electron gun improves the characteristic of electron beam spot and the resolution of tube by removing the  coma  aberration. When the electron gun is not operated, the following condition  is satisfied, that is Sc < Sd <= S, where Sc is distance between  the electron beams through holes of the first grid electrode (23),  Sd is distance of the second grid electrode, S  is  distance  between the electron beam through the hole of the first focusing electrode (5) and the through hole of the  second  focusing  electrode  (6). When the electron gun is operated, the first  grid  electrode  and the second grid electrode are expaned in sequence by heating of  a heater, and then the condition of Sc = Sd = S is satisfied.
Patent KR-920008618-B1 (KR)
Inventor: ARASHIBA NOBUMASA
IPC: C07D301/19
Filed: 1989-05-25
Granted: 1992-10-02
Abstract: 내용 없음
Patent KR-0139083-B1 (KR)
Inventor: LORENZ JOACHIM
IPC: C08K5/46
Filed: 1989-09-29
Granted: 1998-04-30
Abstract: 내용없음
Patent KR-910004592-B1 (KR)
Title: Method symbiotic of chlorophyceae and fish
Inventor: PARK MU-YONG
IPC: A01K61/00
Filed: 1989-10-20
Granted: 1991-07-08
Abstract: The screen-blocked cage for high  density  culture  or  green algae (I) including chlorella or  spirozyra  of  chlorophyceae  is located at 30cm below the surface of the pond. At  the  bottom  of the pond, the fish can be  grown  to  supply  carbon  dioxide  and organic wastes for (I)'s growth. Eventhough the feed  is  supplied manually, oxygen for  fish  respiration  is  diffused  from  (I)'s photosynthesis at the top. This symbiotic system is  designed  for high density culture of (I) and fish, based on (I)'s oxygen supply and fish's carbon dioxide and nitrogen sources. The  culture  mass of (I) is harvested by lifting the cage every sun-set and dried by air, and fish are harvested every month.
Patent KR-920006069-B1 (KR)
Title: Once storage tv of sound signal
Inventor: BAEK DONG-CHOL
IPC: H04N5/46
Filed: 1989-11-28
Granted: 1992-07-27
Abstract: The television set, when  power  is  on,  reproduces  message stored by a user on a memory to send message  to  another  person. The television set includes a memory (9) for storing message of  a user, a switch (12) for selecting reproduced message or signal  of a television audio signal processor and for applying the  selected signal to an audio signal processor (13), a delay circuit (14) for delaying power on  signal  transmitted  from  a  microcomputer  to control the switch during the delayed time, an A/D  converter  (8) for digitizing the input analog message froma  microphone,  a  D/A converter (10) for converting digital message stored on the memory to analog signal.
Patent KR-930006911-B1 (KR)
Title: Process for producing ionomer resin
Inventor: HAN SU-YONG
IPC: C08F255/00
Filed: 1989-12-21
Granted: 1993-07-24
Abstract: The ionomer resin is obtained by (1) mixing  a  master  batch (A) prepared by adding and mixing at least one metal salt selected from the  group  composed  of  I,  IIa,  IIb  and  III  group  and polyolefin supports, a dispersion agent (B)  prepared  by  melting silica gel into acetic acid or water and a copolymer (C) of alpha, beta-unsaturated  carboxylic  acid  and  alpha-olefin  of  formula RCH=CH2 (where, R is C1-8 alkyl or hydrogen),  and  (2)  extruding the mixture (1). The olefin resin  is  low  density  polyethylene, medium density polyethylene or linear  low  density  polyethylene, and its melt index and density are 20-150 g/10 min and 0.910-0.965 g/ cm2 respectively.
Patent KR-920007392-B1 (KR)
Title: Method of and apparatus for manufacturing tube having holes
Inventor: OE TATSUYA
IPC: B23K26/08
Filed: 1989-12-27
Granted: 1992-08-31
Abstract: It is an object of the present invention to provide a tube with precise holes. The side of a tube is drilled at predetermined intervals by a laser beam while the tube is being conveyed in its longitudinal direction in a tubular state. In consequence, manufacture is facilitated, and the precise holes can be drilled.