baber/WOPTO huggingface dataset:
Patent KR-850000147-B1 (KR)
Title: Composition for plant growth
Inventor: MEON KURUVAKKAT KOCHU GOVIND
IPC: C11B11/00
Filed: 1981-07-14
Granted: 1985-02-28
Abstract: A useful material for plant nutrients was obtained by sapong. rice bran wax under reflux in the presence of an org. solvent and extg. from the mixt. of sapond. and unsaponified material produced a complex fraction comprising unsaponifiable, long-chain organic compounds. Plants are treated with an equeous solution containing 0.01-5 ppm, preferably 0.1-1 ppm, of the complex fraction either by foliar spray, root dip, seed sock, or soil treatment prior to seeding or planting.
Patent KR-880002068-B1 (KR)
Title: Cermet tip for cutting with reactive surface layer exhibits excellent toughness and thermoplastic deformation resistance and its manufacture
Inventor: UKIJAWA TAIJIROU
IPC: B22F7/02
Filed: 1982-09-28
Granted: 1988-10-14
Abstract: A blade member for cutting tools which comprises a substrate of cermet containing, apart from impurities 10 to 35% by vol. of at least one metal selected from the group consisting of Fe, Co, Ni, Cr, Mo, W and Al, 5 to 40% by vol. of at least one compound selected from the group consisting of carbides and nitrides of metals in groups IVa, Va and VIa of the periodic table, and balance titanium carbide and titanium nitride (the vol. ratio of titanium nitride to titanium carbide plus titanium nitride is 0.2 to 0.6), said substrate having on a surface thereof a reaction layer composed of carbo-nitride of at least two metals in groups IVa, Va, VIa, of the periodic table, said reaction layer having an average thickness of 0.5-15.0 microns.
Patent KR-890003977-B1 (KR)
Title: Combination lock
Inventor: ZAMPINI LOUIS JR
IPC: E05B37/02
Filed: 1983-03-25
Granted: 1989-10-14
Abstract: The permutation lock is mounted on one of a pair of hinged sections and is adapted to receive and lock to a hasp of the other section. The lock includes a number of rotatable dials whih act against a movable bolt to move a latching end of the latter toward and away from a locking position.  Even with the dials in a locked mode, the bolt can be momved to an unlocking position in response to introduction of the hasp into the lock.  The hasp includes a completely closed aperture which is adapted to receive a pair of hooks at the latching end of the bolt.
Patent KR-900007089-B1 (KR)
Title: Liquid oxidative desizing agent
Inventor: ADRIAN KLAUS
IPC: D06L1/14
Filed: 1983-03-28
Granted: 1990-09-28
Abstract: An oxidative desizing agent compsn. comprises 5-20 wt.% of sodium persulphate, ammonium persulphate, potassium peroxodiphosphate, sodium peroxodiphosphate, ammonium peroxodiphosphate or calcium peroxodiphosphate, 20-50 wt.% surfactant of C8-20-secondary- alkanesulphonate, C4-12-alkylphenol-oxethylate or C10-18-aliphatic alcohol-oxethylate, or residual wt.% of water. The agent is stable in the storage.
Patent KR-860001733-B1 (KR)
Title: Cutting devices of combines
Inventor: KIKUSAWA HIROMASA
IPC: A01D41/12
Filed: 1983-09-15
Granted: 1986-10-20
Abstract: The cutting frame(3) with cutting blade(1) and a stem pulling and erecting device is bent over the driving shaft(5) and extended below the threshing device(6). The frame is pivoted on the shaft (19). The stem cut down by the blade is transferred to the threshing device by the stem feeding device(35,36) which is mounted on the front part of the threshing device.
Patent KR-920002770-B1 (KR)
Title: Polyurethane catalyst compositions
Inventor: MEGNA IGNAZIO S
IPC: C08G18/76
Filed: 1983-12-16
Granted: 1992-04-03
Abstract: A catalyst composition for polyurethane production by reaction between aliphatic hydroxyl-containing compounds and secondary and or tertiary aliphatic isocyanate compounds, comprising (a) lead naphthenate and (b) a dialkyl tin dicarboxylate compound in a weight ratio of from about 25:75 to about 75:25.
Patent KR-860001822-B1 (KR)
Inventor: YOSHIOKA HIROSHI
IPC: D06C7/02
Filed: 1984-05-16
Granted: 1986-10-24
Abstract: 내용 없음.
Patent KR-860000681-B1 (KR)
Title: Hangul/hanja(korean character/chinese character)word processor
Inventor: JONG KWAN-JIN
IPC: G06F15/00
Filed: 1984-05-31
Granted: 1986-05-29
Abstract: The sequence of input Korean characters is displayed on the screen as well as stored in the buffer of RAM(5), when the clause mode is selected. The sequence is seperated as the clause when the sentence marks(e.g. space, ?, ], ., etc.) appear. The seperated clause is analyzed grammatically with the tables of prefix, suffix, auxiliary in ROM(3) and the table of words in the dictionary disc(7) so that the possible Korean for converting to Chinese is converted automatically. A displayed homonym with different meaning can be corrected manually by changing the selection key from a clause mode to a character mode.
Patent KR-900007809-B1 (KR)
Title: Rotray tape liquid filling apparatus
Inventor: INOMADA MASASI
IPC: B67C3/28
Filed: 1984-11-03
Granted: 1990-10-20
Abstract: The equipment continuously charges liquid to vessels on a rotating body. The equipment includes vessels (3) on loading frame (17), mounted on rotating body (4); charging nozzles (7) for charging liquid; valves (15) for opening or closing liquid-supply passages; card reader (13) for reading data of memory card (12), attached on vessel; charge control device (14) for comparing wights of vessel and weight detector (16), closing switch valve (15) when detected weight is seaches the total vessel weight.
Patent KR-970007247-B1 (KR)
Inventor: KATSUR KOYO
IPC: G06T11/20
Filed: 1984-12-26
Granted: 1997-05-07
Abstract: 내용없음
Patent KR-870001214-B1 (KR)
Title: Method for constructing the pole used in the sea
Inventor: YUN YU-TAEK
IPC: A01G33/02
Filed: 1984-12-27
Granted: 1987-06-22
Abstract: An assembled pipe for laver farming is presented.  Thus, basal core pipe coated with PE or PVC films is winded, in a X shape and in a sequence, with 1  laminated yarns prepd. by immersing PP yann, nylon yarn, or hemp yarn into 40% vinylacetate resin soln., with napped yarus, and with 2  laminated glassrubbing yarns or PP yarns coated with FRP resin.  The coiled core pipe is treated with a colored gel- coat resin contg. hardening accelerant.
Patent KR-900006768-B1 (KR)
Title: Rotray heads type magnetic recording or reproducing apparatus
Inventor: TANIKUJI HIROSHI
IPC: G11B5/592
Filed: 1985-02-13
Granted: 1990-09-21
Abstract: A magnetic recording and reproducing apparatus includes a signal adding/gate circuit (5) for receiving FM-Y signal, colour signal, FM audio signal, PCM audio signal, pilot signals (f1-f4) and head height control signal (f5); a gate pulse providing circuit (6) for providing gate signal to (5); recording amplifiers (7,8) for amplifying the output of the signal adding/gate circuit; and magnetic heads (11,12) for recroding signal on a magnetic tape. The appts. records tracking pilot signals using four frequencies which control head height.
Patent KR-900002630-B1 (KR)
Title: Micro processor-controlled fire sensor
Inventor: KERN MARK T
IPC: G08B29/14
Filed: 1985-08-14
Granted: 1990-04-21
Abstract: The fire sensor system comprises a detector for sensing electromagnetic energy and generating a detector signal responsive to the amplitude of the detected energy.  A microprocessor analyses each detector signal and generates an output signal in response to certain predetermined patterns in the particular detector signal. An amplifier is disposed between each detector and the microprocessor. The microprocessor further includes a circuit for controlling the gain of each amplifier and each detector is stimulated with at least one test stimulus.
Patent KR-900000993-B1 (KR)
Title: The comparator circuit with the improved output characteristics
Inventor: KOSAKA DUNIMIZ
IPC: H03K5/24
Filed: 1986-03-06
Granted: 1990-02-23
Abstract: A comparator circuit comprises a first power supply terminal means and a second power supply terminal means: a differential stage connected between the first power supply terminal means and the second power supply terminal means, a first input signal having a reference level and second input signal having a level to be compared with the reference level being both input to a pair of input terminals of the differential stage, respectively, an output signal having a level which is determined in accordance with the level of the input signal being output from an output terminal of the differential stage.
Patent KR-930007904-B1 (KR)
Inventor: RIEDEL KENETH E
IPC: A61M25/02
Filed: 1986-03-20
Granted: 1993-08-21
Abstract: 내용 없음.
Patent KR-890001349-B1 (KR)
Title: Wrist watch case
Inventor: TAKAGI TORU
IPC: G04B37/08
Filed: 1986-04-14
Granted: 1989-04-29
Abstract: A main body (8) of the watch having self case (11) covered with a watch movement part (9) is inserted into an outer case (1) and fixed with an attachment part (5) of the watch band by nuts (7) so that the waterproof characteristics are enhanced by double casing.
Patent KR-890004046-B1 (KR)
Inventor: KIM YONG-HWAN
IPC: C23G1/00
Filed: 1986-06-20
Granted: 1989-10-18
Abstract: 내용 없음.
Patent KR-920001767-B1 (KR)
Inventor: KAKIMOTO YUKIHIKO
IPC: C07D303/04
Filed: 1986-07-03
Granted: 1992-03-02
Abstract: 내용 없음.
Patent KR-900007010-B1 (KR)
Title: Method of and an apparatus for high speed printing of laser printer
Inventor: LEE MIN-HO
IPC: G06K15/10
Filed: 1986-07-15
Granted: 1990-09-27
Abstract: (a) determining present dot no. by subtracting 140 dots/sec from 800 kdots, (6) converting print data input into even/odd data, (c) calculating a carriage motor transfer distance and dot no. with converted even/odd data, (d) if sum the value of adding the calculated dot no. to present dot no. is greater than 800kdots no., adding odd data and present dot no. and printing odd data with subtracting 140dots/sec from the value, and (e) if the value of adding the calculated dot no. to present dot no. is less than 800kdots, printing even/odd data with subtracting 140dots/sec from the value.
Patent KR-900002686-B1 (KR)
Title: Recrystalizing method for conductor film
Inventor: MUKAY ROICHI
IPC: H01L21/268
Filed: 1986-12-03
Granted: 1990-04-23
Abstract: The semiconductor device for permiting selective recrystallisation of a small region only is formed by forming a nonmonocrystalline conductive semiconductor layer on an insulating substrate and the layer having a region which is to be recrystallised, and depositing a thermal conduction controlling layer and the layer having a thicker portion over the region to be recrystallised, and depositing an energy-absorbing cap layer, and irradiating the latter layer so that the region of the semiconductor layer melts and recrystallises from the heat generated in the cap layer.
Patent KR-890002964-B1 (KR)
Title: Manufacture instrument of halogen lamp
Inventor: KIM JONG-TAE
IPC: H01K3/00
Filed: 1986-12-24
Granted: 1989-08-14
Abstract: The apparatus comprises means of inserting filament in the light transmitting tube having welded tube for gas insertion and ventilating, means for heating the both ends of the tube, and means for sealing the both ends by welding.  All functions are performed successively.
Patent KR-900001308-B1 (KR)
Title: Transverse flow diagnostic device
Inventor: HOSSOME MILES G
IPC: F16C9/04
Filed: 1986-10-11
Granted: 1990-03-08
Abstract: PCT No. PCT/GB86/00071 Sec. 371 Date Oct. 17, 1986 Sec. 102(e) Date Oct. 17, 1986 PCT Filed Feb. 10, 1986 PCT Pub. No. WO86/04650 PCT Pub. Date Aug. 14, 1986.A connecting rod has a rod member formed from fiber reinforced plastic material secured to a cap member to define the big end of the connecting rod. Securement is by a metal member rigidly attached to the rod member, to which the cap member is secured. Attachment of the rod member and the metal member is via a locally transversely expanded end portion of the rod member enclosed within a similarly shaped (e.g. wedge shaped) cavity in the metal member such that the expanded end portion cannot be withdrawn axially of the rod member from the cavity.
Patent KR-940007772-B1 (KR)
Title: Modification of plant viruses or their effects
Inventor: BOLCOMB DAVID C
IPC: C12N15/40
Filed: 1987-01-23
Granted: 1994-08-25
Abstract: The invention relates to a method of modifying a plant virus or its effects, which comprises incorporating genetic material into a plant and infecting said plant with a plant virus, whereby expression of the incorporated genetic material modifies the plant virus or its effects. In a preferred embodiment, expression in the plant of the incorporated genetic material causes attenuation of the symptoms of attack on the plant by a plant virus.
Patent KR-890005245-B1 (KR)
Inventor: CHONG IL
IPC: H05B37/02
Filed: 1987-02-07
Granted: 1989-12-18
Abstract: 내용 없음.
Patent KR-890003227-B1 (KR)
Title: Preparation method for dna probe
Inventor: CHUNG KYO-MIN
IPC: C12Q1/00
Filed: 1987-04-13
Granted: 1989-08-27
Abstract: The method of preparing the DNA probe in DNA hybridization comprises; (a) culturing E. coliHB101/pBR322 in medium containing 1% of tryptone and 0.5 of yeast extract, (b) adding 100mg/l of chloramphenicol to culture broth, (c) harvesting the broth and suspending the obtained cells in 25mM of tris-buffer solution, (d) centrifuging the broth and adding phenol: chloroform (1:1) solution to the obtained supernatant, (e) adding ethanol and DNA to the mixture, (f) dissolving the above plasmid pBR322 in core buffer solution and adding restriction enzyme, Hinf and TagI to the above buffer solution (g) pretreating  the obtained gene and purifying.
Patent KR-900007268-B1 (KR)
Title: Process for the preparation docosahexaenoic acid and eicosapentaenoic acid
Inventor: SHIN HYUN-GYUNG
IPC: C07C69/52
Filed: 1987-05-26
Granted: 1990-10-06
Abstract: A method for separating and concentrating docosahexaenoic acid and eicosapentaenoic acid or their alcohol esters from fish oil fatty acid or alcohol ester comprises reacting fish oil fatty acid or its alcohol ester mixture with urea in the presence of urea-moisturing agent and organic solvent to produce urea inclusion cpd., and filtering urea inclusion cpd. from the mixture. The moisturing agent is pref. water, acetonitryl or its mixture. The organic solvent is pref. n-heptane, n-hexane, n-octane, isooctane, n-pentane, benzene or cyclohexane.
Patent KR-950001037-B1 (KR)
Inventor: CRATER DAVIS H
IPC: C08L67/02
Filed: 1987-09-11
Granted: 1995-02-08
Abstract: 내용 없음.
Patent KR-910000329-B1 (KR)
Inventor: NISHIDA TAKASHI
IPC: E06B7/00
Filed: 1987-11-04
Granted: 1991-01-24
Abstract: 내용 없음.
Patent KR-960006427-B1 (KR)
Title: Battery recycling method
Inventor: HANULIK JOZEF
IPC: H01M/
Filed: 1987-12-12
Granted: 1996-05-15
Abstract: For the recycling of electrical batteries, in particular of a mixture of high-power batteries for equipment of any chemical composition, and also of assembled printed circuit boards and electronic components, a pyrolysis of the unsorted mixture is carried out at a temperature between 450 DEG  and 650 DEG , then an electrolysis of the pyrolysis slag is carried out and subsequently a separation of the electrolysis products and removal of the products accumulating at the electrodes is carried out. In this process, which is economically profitable, no environment-polluting residues are produced and an initial sorting of material becomes unnecessary.
Patent KR-900007923-B1 (KR)
Title: Voice output amp
Inventor: IMANISHI KAZO
IPC: H03F1/42
Filed: 1988-02-27
Granted: 1990-10-23
Abstract: A stand-by signal is supplied to a stand-by circuit for determining that the operation condition is a normal operative mode or a stand-by mode to control the operation. An output signal of the stand-by circuit is delayed. An output signal from the delay circuit is supplied to a bias circuit for generating a predetermined bias voltage. An audio signal supplied from the audio signal input terminal is amplified based on the biase voltage. When it is sensed by an overcurrent detection circuit that on overcurrent flows in the amplifier circuit, supply of the bias voltage to the amplifier circuit is interrupted by the protection circuit. The operation of the protection circuit is controlled by output signal from the delay circuit and the overcurrent detection circuit.
Patent KR-960007935-B1 (KR)
Inventor: OMAE TADAYUKI
IPC: C08L77/02
Filed: 1988-03-24
Granted: 1996-06-17
Abstract: 내용 없음.
Patent KR-910005207-B1 (KR)
Inventor: DANOGUCHI GASARO
IPC: B29C48/10
Filed: 1988-03-29
Granted: 1991-07-23
Abstract: 내용 없음.
Patent KR-960003712-B1 (KR)
Inventor: SHIO KYOMI
IPC: B22D11/06
Filed: 1988-06-08
Granted: 1996-03-21
Abstract: 내용 없음.
Patent KR-960016125-B1 (KR)
Inventor: HEINZ FORSTER
IPC: A01N43/72
Filed: 1988-07-15
Granted: 1996-12-04
Abstract: 내용없음.
Patent KR-910004187-B1 (KR)
Title: Memory device consist of 3 transistors using i bit line and/word line
Inventor: KIM WON-CHAN
IPC: G11C11/40
Filed: 1988-12-30
Granted: 1991-06-24
Abstract: In the memory cell comprising the three transistor  by  using one bit line and one word  line,  a  capacitor  (C1)  terminal  is connected to a gate of MOS transistor (M1) and also to a source of MOS transistor (M3). The another terminal of capacitor (C1) and  a source of M1 are connected to the substrate bias. The drain of  M1 is connected to the source of M2.  The  drain  of  M2  and  M3  is connected to the bit line, and the gate of M2 and M3 is  connected to the word line. The threshold voltage of M3 is set  higher  than that of M2. The electric potential of word line is higher than the threshold voltage of M3 in the case of reading of information.
Patent KR-910010210-B1 (KR)
Title: Cross linking agent for controlled film build epoxy coating applied by cathodic electro deposition
Inventor: MCINTYRE JOHN M
IPC: C09D163/00
Filed: 1987-09-21
Granted: 1991-12-21
Abstract: A process for the preparation of an epoxy cationic resin from an epoxy resin composition having terminal oxirane groups which includes the step of converting oxirane groups to cationic groups by reacting a nucleophile with at least some of the oxirane groups of the epoxy resin compos                              ition wherein an organic acid and water are added during some part of this conversion; characterized by using as the epoxy resin composition a blend of (I) at least one of (A) at least one epoxy-based resin prepared from a diglycidyl ether of a polyether polyol having an average epoxide equivalent weight of from 350 to 5,000; or (B) at least one epoxy-based cationic resin prepared from a diglycidyl ether of a polyether polyol having an average epoxide equivalent weight of from 350 to 5,000 which diglycidyl ether has been partially capped with a monofunctional capping agent; or (C) a combination of (A) and (B); and (II) at least one different epoxy-based resin; wherein at some time during preparation of the composition, the resins are converted to cationic resins whereby there is obtained a blend of cationic polyether epoxy-based resin and a different cationic epoxy-based resin; said blend comprising from 10 to 90 percent by weight of component (I) based on total cationic resin and wherein the blend of cationic resins has a charge density of from 0.2 to 0.6 milliequivalent of charge per gram of resin,
Patent KR-920009351-B1 (KR)
Inventor: TSUJI AKIO
IPC: B41J3/44
Filed: 1989-03-06
Granted: 1992-10-15
Abstract: 내용 없음.
Patent KR-0136282-B1 (KR)
Inventor: OUBA SHUO
IPC: B24B37/20
Filed: 1989-04-26
Granted: 1998-04-28
Abstract: 내용없음
Patent KR-0151717-B1 (KR)
Inventor: VAN DE PAS HERMANUS A
IPC: H04B10/2581
Filed: 1989-06-02
Granted: 1999-04-15
Abstract: 광전송 섬유와 반도체 레이저 다이오드사이에 커플링을 갖는 광전자 장치가 제공된다. 
     상기 광전자 장치에는 반도체 레이저 다이오드용 홀더와 광전송 섬유용 홀더가 구비되며, 두개의 홀더 사이에 중간 부품이 배치되고, 상기 중간 부품과 두개의 홀더중 하나는 하나가 다른 하나로 미끄러져 들어갈 수 있으며 이 부품중 하나가 두께가 감소된 환형 연결부를 갖도록 배열되며, 반도체 레이저 다이오드에 대한 광전송 섬유의 단부의 축방향 조정 후에 감소된 두께를 갖는 한 부품의 연결부는 다수의 레이저 용접에 의해 다른 부품의 표면에 고정되고, 중간 부품과 다른 홀더는 축방향 조정 방향에 직각인 편평한 표면을 가지며, 서로 맞물리는 이 표면들과 이 표면들중 하나는 두께가 감소된 플랜지를 가지는 반면에, 레이저 요소에 대한 전송 섬유 단부의 횡방향 조정 후에 두께가 감소된 플랜지는 다른 표면에 다수의 레이저 용접에 의해 고정된다.
Patent KR-920010017-B1 (KR)
Inventor: GOTO NORIO
IPC: G11B7/126
Filed: 1989-06-05
Granted: 1992-11-10
Abstract: 내용 없음.
Patent KR-950006805-B1 (KR)
Title: Polymer polyol compositions and there use in the preparation of polyurethane foams
Inventor: HAGER STANLEY L
IPC: C08L71/02
Filed: 1989-07-11
Granted: 1995-06-22
Abstract: Polymer polyol compositions are provided which are useful for the production of flexible polyurethane foams. The polymer polyol compositions are composed of (1) a high functionality polyol, (2) a subsidiary polyalkylene oxide high in polyoxyethylene content and (3) a stably dispersed polymer. The latter component is formed by in situ polymerization of low molecular weight compounds within components (1) and/or (2) used in making the polymer polyol composition. The polymer polyol compositions provide stable and non-shrinking, free-rise foam at high water levels and over a wider crosslinker and index range permitting increased density and load latitude relative to commercial high resilience polymer polyols. A process for their use and foams and articles prepared therefrom are also provided.
Patent KR-920002440-B1 (KR)
Inventor: ARIMURA GUNITAKA
IPC: H01Q21/06
Filed: 1989-08-07
Granted: 1992-03-24
Abstract: 내용 없음.
Patent KR-0139540-B1 (KR)
Inventor: KALFUS MARTIN AARON
IPC: H01L23/495
Filed: 1989-09-08
Granted: 1998-06-01
Abstract: 내용 없음
Patent KR-920002368-B1 (KR)
Title: Change-speed control circuit of air pressure regulating type
Inventor: CHO BYUNG-KI
Filed: 1989-11-09
Granted: 1992-03-23
Abstract: A speed shifting unit (A10) consisting of electrical switches supplies operating signals through an integrating circuit (A13) to input ports (P2-0)-(P2-4) of a CPU. In  cooperation  with  a  gear position sensor (A11) and a speed sensing section (A24),  the  CPU emits  gear  shifting  signals,  so  that  gears  can  be  shifted automatically by a pneumatic means. A brake disorder sensor  (A12) detects any disorderly state  of  the  brake  to  brake  down  the vehicle upon finding  any  disorder  in  the  brake  system.  With circuit, a single chip microprocessor receives data  on  the  gear state, and emits commands to shift the speed pneumatically.
Patent KR-970000363-B1 (KR)
Title: Still video camera sticking and separating type video color printer
Inventor: PARK SANG-SHIN
IPC: H04N5/225
Filed: 1989-12-29
Granted: 1997-01-08
Abstract: A video color printer with a detachable still video camera is disclosed. The video color printer with a detachable still video camera comprises: an outside video signal input end(6); a video signal input end(C21); a still video camera(50) operated responsive to voltage source from voltage source input end(C32) for writing and storing a video signal inputted through the video signal input end(C21) onto a floppy disc responsive to write mode, and for outputting the video signal stored on the floppy disc reponsive to restore mode; a switch(10) for selecting and outputting video data from the outside video signal input end(6) and the video signal input end(C21); and voltage source output end(C31) for processing and outputting the video signal from the switch(10) to a video signal output end(C11) connected to a video signal input end(C2) of the still video camera(50) and for outputting the voltage source. Thereby, the memory of the video color printer can be easily extended and resource of the still video camera and the video color printer can be effectively utilized by uniting the two device.
Patent KR-0159940-B1 (KR)
Inventor: UCHIDA GEN
IPC: H01L21/8246
Filed: 1990-02-05
Granted: 1998-12-01
Abstract: 내용없음.
Patent KR-0163431-B1 (KR)
Inventor: LAMORT JEAN PIERRE
IPC: D21D5/16
Filed: 1990-02-13
Granted: 1999-01-15
Abstract: 내용없음
Patent KR-920004900-B1 (KR)
Title: Impregnated type cathode body and manufacturing the same
Inventor: CHOI JONG-SO
IPC: B23K26/21
Filed: 1990-03-13
Granted: 1992-06-22
Abstract: The impregnated cathode is produced by inserting  the  porous substance into the cup, welding the cup and the substrate  by  the laser beam, infiltrating a thermionic emission material  into  the substrate, removing the residue of the emission  material  adhered to the surface  of  the  substrate,  inserting  the  cup  and  the substrate into the upper of the sleeve, and  weld-fixing  them  by the laser (or resistance) welding machine.