baber/WOPTO huggingface dataset:
Patent IT-1259539-B (IT)
Title: Sistema di rilevazione ambientale per veicoli, ad esempio autovetture
Inventor: INNOCENTI GIANFRANCO
IPC: G01S17/931
Filed: 1992-04-14
Granted: 1996-03-20
Abstract: Un sistema per la rilevazione o monitoraggio dell'ambiente circostante il veicolo viene realizzato impiegando una pluralità di teste ottiche (1 a 6), preferibilmente all'infrarosso, di tipo passivo, facenti capo ad un'unità centrale (7) in cui è provvista una sorgente (12) della radiazione da utilizzare per la rilevazione nonché un rivelatore (13) sensibile a tale radiazione. Un dispositivo multiplatore (8) collega selettivamente ciascuna testa (1 a 6) all'unità centrale, di solito secondo una sequenza ciclica preordinata, così da consentire lo svolgimento in sequenza dell'azione di monitoraggio e rilevazione d'ostacoli e corpi che si approssimano al veicolo nelle varie zone sorvegliate dalle diverse teste ottiche (1 a 6).(Figura 1)
Patent IT-1270919-B (IT)
Title: Sistema per il riconoscimento di parole isolate indipendente dal parlatore mediante reti neurali
Inventor: ALBESANO DARIO
IPC: G10L15/08
Filed: 1993-05-05
Granted: 1997-05-16
Abstract: IL METODO PER IL RICONOSCIMENTO DI PAROLE ISOLATE INDIPENDENTE DAL PARLATORE E' BASATO SU UN SISTEMA DI RICONOSCIMENTO IBRIDO, CHE FA USO DI RETI NEURALI, SFRUTTANDONE L'ELABORAZIONE PARALLELA PER MIGLIORARE IL RICONOSCIMENTO E OTTIMIZZARE IN TEMPO E MEMORIA IL SISTEMA, E CONSERVA ALCUNI ASPETTI CONSOLIDATI DELLE TECNICHE DI RICONOSCIMENTO.LE PAROLE INTERE SONO MODELLATE CON AUTOMI DEI MODELLI MARKOVIANI DEL TIPO SINISTRA-DESTRA CON RECURSIONE SUGLI STATI, OGNUNO DEI QUALI CORRISPONDE AD UNA PORZIONE ACUSTICA DELLA PAROLA, E IL RICONOSCIMENTO AVVIENE EFFETTUANDO UNA PROGRAMMAZIONE DINAMICA SECONDO L'ALGORITMO DI VITERBI SU TUTTI GLI AUTOMI PER TROVARE QUELLO CON PERCORSO DI COSTO MINIMO, A CUI CORRISPONDE LA PAROLA RICONOSCIUTA, LE PROBABILITA' DI EMISSIONE ESSENDO CALCOLATE CON UNA RETE NEURALE CON CONTROREAZIONE, ADDESTRATA IN MODO ORIGINALE, E LE PROBABILITA' DI TRANSIZIONE ESSENDO OPPORTUNAMENTE STIMATE.
Patent IT-1261383-B (IT)
Title: Metodo di misura dimensionale e campione di riferimento per l'attuazione di tale metodo.
Inventor: CRITELLI ANTONIO
IPC: G01B5/00
Filed: 1993-12-21
Granted: 1996-05-20
Abstract: E' descritto un metodo di misura dimensionale di un pezzo da controllare, secondo il quale vengono impiegati un campione di confronto ed un campione di riferimento, rispettivamente di un materiale coerente con quello del pezzo da controllare e di un materiale a basso coefficiente di dilatazione termica. Attraverso il confronto fra i due campioni si determina la dilatazione termica relativa, rapportandola alle misure eseguite sul pezzo da controllare in modo da determinarne la dimensione come se la misura fosse effettuata in un ambiente a temperatura controllata. Il campione di riferimento per l'attuazione del metodo è preferibilmente di materiale composito.(Figura 2).
Patent IT-1262162-B (IT)
Title: Fermacavo
Inventor: MICCOLI GIOVANNI
IPC: F16B/
Filed: 1993-07-22
Granted: 1996-06-19
Abstract: Il presente trovato concerne un fermacavo, per il bloccaggio di cavi (2) o simili ad una parete (3) da attraversare. Comprende due semielementi a collare (4, 4") delimitanti una sede di alloggiamento e bloccaggio (5) per i cavi (2) e un'apertura (8), praticata nella parete (3), per il passaggio del cavo (2). Un elemento di contenimento (9, 9'), solidale alla parete (3), definisce un perimetro che racchiude i detti semielementi (4', 4") forzandoli l'uno contro l'altro in direzione perpendicolare all'asse della sede (5).
Patent IT-1270777-B (IT)
Inventor: MEZZALIRA RINALDO
IPC: F16L11/08
Filed: 1993-05-13
Granted: 1997-05-07
Abstract: The invention discloses a hose (10) which comprises at least one tubular layer (3) of plastic or rubber material, a mesh-network (4) of the chain type presenting mesh lines (5) and mesh rows (6) having a tubular shape being wound on the external surface of said inner layer, a possible external layer (7), and is characterized in that said mesh rows are slanted in relation to the longitudinal axis of the hose. According to a preferred embodiment the lines (5) of said meshes are slanted in relation to the longitudinal axis Y of the hose, following a direction opposite to the direction of the mesh rows (6). <IMAGE>
Patent MX-165356-B (MX)
Title: Proceso de polimerizacion secuencial para producir un agente formador de opacidad
Inventor: KOWALSKI ALEXANDER
IPC: C09D5/00
Filed: 1984-03-06
Abstract: La presente invención se refiere al proceso de polimerización secuencial para producir un agente formador de opacidad en una dispersión acuosa de partículas de polímero de núcleo/cubierta, insolubles en agua, que comprende polimerizar consecutivamente en emulsión, a una temperatura de 10 a 100 grados C, aproximadamente, en un medio acuoso que contiene un iniciador de radical libre: a) un sistema de monómeros de   núcleo, que comprende uno o más monómeros insaturados monoetilénicamente, al menos uno de los cuales tiene un grupo amino y comprendiendo al menos 5 por ciento en peso del sistema de monómeros del núcleo, formando así partículas de núcleo dispersas que tienen un diámetro promedio de 0.05 a1 micras; y b) polimerizar, en la presencia de las partículas de núcleo dispersas, un sistema de monómeros de cubierta, que comprende al menos un monómero insaturado monoetilénicamente, que no tiene grupos ionizables, para formar una cubierta sobre las partículas del núcleo, cualquier amina insaturada monoetilénicamente en la mezcla de monómeros de la cubierta estando presente en una cantidad no mayor de 10 por ciento en peso de los monómeros de cubierta, la proporción de la mina en la mezcla de monómeros de la cubierta siendo menor de 1/3 de su proporción en la mezcla de monómeros del núcleo, las partículas del núcleo/cubierta resultantes teniendo un diámetro promedio, antes de la acidificación y el hinchamiento, de 0.07 a 4.5 micras, aproximadamente, las cantidades relativas de o los monómeros formadores del núcleo y los formadores de cubierta siendo tales que la relación en pesos del núcleo la peso del polímero total en las  partículas dispersas resultantes de 1:4 hasta 1:100, aproximadamente, dicha cubierta siendo permeable a un ácido acuoso y teniendo una Ti mayor de 50 grados C; y neutralizar con un ácido de modo que al hincharse el núcleo y formar partículas, al secar, tengan un simple hueco.
Patent MX-163029-B (MX)
Inventor: POUGET JACQUES
IPC: A43D11/01
Filed: 1984-11-15
Abstract: PCT No. PCT/FR84/00261 Sec. 371 Date Jul. 12, 1985 Sec. 102(e) Date Jul. 12, 1985 PCT Filed Nov. 14, 1984 PCT Pub. No. WO85/02095 PCT Pub. Date May 23, 1985.A method of working leather, in which a deposit of material adhering to the leather is made on the surface of the leather to enable a leather footwear upper treated in this way to adhere to a sole without being carded or sanded, either by direct injection of sole-constituting material, or else by bonding on or by gluing on a prefabricated sole, and/or to enable the leather to be worked by a high frequency current.
Patent PT-100923-B (PT)
IPC: F16F3/12
Filed: 1992-10-01
Abstract: The present invention refers to elastic elements - springs - in a convenient form, produced by injection moulding, of plastic, non-metallic materials and their support, interconnection and reinforcement components configurating the "Framework" of a mattress or chair, totally made of plastic, replacing metallic wire springs. With the advantages of: manufacturing, assembling and their respective cost, lightweight, non-oxidation, the possibility of manufacturing all framework sizes with only one model.
Patent PT-101597-B (PT)
Inventor: POTIER ALEXANDRE
IPC: E04D3/32
Filed: 1994-10-26
Abstract: The subject of the present invention is an improvement made to profiled panels for roofing or cladding buildings as well as the roofing and cladding obtained using such panels. It is characterised in that the two opposite corners on the same diagonal of one same shaped panel P1-P2-P3-P4 are cut or precut at a straight cutting angle  gamma  having a value preferably of 22 DEG with respect to the transverse edge of the panel in order to allow a variable range of overlap from 140 to 200 mm, and in that the position of the vertex of the cutting angle  gamma  can be found respectively on the transverse edge of the panel with respect to a fixed axis which consists either of the middle of the trough of the wave (CO) in the case of the lower corner of the panel P3 or of the middle of the crest of the wave (SO) in the case of the upper corner of the panel P2. The panels which are preferably made of fibrocement (fibre-cement) or reinforced plastics allow laying on site with variable overlap and independently of the direction of the prevailing winds. <IMAGE>
Patent PT-105441-B (PT)
Title: Nanocompósito híbrido para remediação de meios aquáticos e respetivo método de produção
Inventor: NOBREGA ANA VERA ALVES MACHADO
IPC: C02F1/00
Filed: 2010-12-20
Abstract: A PRESENTE INVENÇÃO REFERE-SE A UM POLÍMERO NANOCOMPÓSITO HÍBRIDO COMPOSTO POR UMA PARTE ORGÂNICA E OUTRA INORGÂNICA, PARA A REMEDIAÇÃO DE MEIOS AQUÁTICOS CONTAMINADOS COM ANIÕES COMOFOSFATOS, NITRATOS, SULFATOS E POLIFOSTATOS. O NANOCOMPÓSITO, POR SER COMPOSTO POR POLIPROPILENO ENXERTADO COM ANIDRIDO MALEICO E ISOPROPOXIDO DE ALUMÍNIO, CRIA FORTES LIGAÇÕES COVALENTES OU IÓNICAS ENTRE O COMPONENTE ORGÂNICO E O INORGÂNICO, O QUE LHE CONFERE ELEVADA RESISTÊNCIA MECÂNICA ASSOCIADA À IMPOSSIBILIDADE DE DISSOLUÇÂO DOS SEUS COMPONENTES NO CORPO AQUÁTICO. O NANOCOMPÓSITO HÍBRIDO PODE SER APLICADO IN SITU, ATRAVÉS DA CONSTRUÇÃO DE UMA BARREIRA REATIVA PERMEÁVEL INSERIDA NO MEIO AQUÁTICO QUE É ATRAVESSADA PELA ÁGUA A TRATAR, OU EX SITU, SENDONECESSÁRIO PARA O EFEITO BOMBEAR A ÁGUA A TRATAR, FAZÊ-LA ATRAVESSAR UM FILTRO CONTENDO O NANOCOMPÓSITO HÍBRIDO E FINALMENTE DEVOLVÊ-LA AO MEIO AQUÁTICO, PODENDO SER MOLDADO DEACORDO COM O TIPO DE APLICAÇÂO E O LOCAL EM CAUSA. VÁRIAS TÉCNICAS DE CARACTERIZAÇÂO COMO MÉTODOS EXPETRAIS E AVALIAÇÂO DAS PROPRIEDADES REOLÓGÍCAS, DO PONTO DE CARGA ZERO E CINÉTICA DE REMOÇÃO DO IÁO FOSFATO, DEMONSTRAM QUE O PRODUTO NÃO ALTERA O PH NEM CONTAMINA A PRÓPRIA ÁGUA.
Patent PT-117332-B (PT)
Title: Reator para a produção seletiva de nanoestruturas bidimensionais autónomas utilizando tecnologia plasma
Inventor: JÚLIO PAULO DOS SANTOS DUARTE VIEIRA HENRIQUES
IPC: H05H1/46
Filed: 2016-05-13
Abstract: A PRESENTE INVENÇÃO REFERE-SE A UM REATOR PARA A PRODUÇÃO SELETIVA DE NANOESTRUTURAS BIDIMENSIONAIS AUTÓNOMAS, UTILIZANDO UM AMBIENTE DE PLASMA EXCITADO POR MICRO-ONDAS. O REATOR DE PLASMA EM CONJUNTO COM UMA FONTE (11) DE RADIAÇÃO INFRAVERMELHA PROPORCIONAM UM AJUSTE CONTROLADO DOS GRADIENTES ESPACIAIS DA TEMPERATURA E DA VELOCIDADE DE ESCOAMENTO DO GÁS. O REATOR PODE LEVAR A CABO UM PROCESSO BASEADO NA INJEÇÃO DE UMA MISTURA (9) DE GASES E DE PRECURSORES, EM REGIME DE ESCOAMENTO EM QUE O ESCOAMENTO É SUBMETIDO AO CAMPO ELÉTRICO DE UMA ONDA (5) DE SUPERFÍCIE, EXCITADA MEDIANTE A UTILIZAÇÃO DE POTÊNCIA (7) MICRO-ONDAS QUE É INTRODUZIDA NUM APLICADOR (6) DE CAMPO, GERANDO PLASMAS COM ALTA DENSIDADE (2,3,4) DE ENERGIA, QUE DECOMPÕEM OS PRECURSORES NOS SEUS CONSTITUINTES ATÓMICOS E/OU MOLECULARES. O REATOR DE PLASMA COM UMA ZONA DE LANÇAMENTO DE ONDAS DE SUPERFÍCIE PODE SER UTILIZADO NO CONTEXTO DE UM SISTEMA QUE COMPREENDE AINDA UMA ZONA TRANSIENTE COM ÁREA DE SECÇÃO TRANSVERSAL PROGRESSIVAMENTE CRESCENTE, E UMA ZONA DE NUCLEAÇÃO.
Patent RO-80663-B (RO)
Inventor: PROST MAURICE
IPC: C07D215/02
Filed: 1980-09-12
Abstract: Conform prezentei inventii procedeul pentru prepararea unor derivati de decahidrochinolina avînd formula generala I: (vezi form. in desc.) consta în aceea ca se trateaza 4-hidroxi-trans-decahidrochinolina N-substituita în benzen, toluen sau diclormetan, la temperatura ambianta cu fosgen, pentru care se obtine un compus internediar care apoi se trateaza la temperatura ambianta, în benzen, toluen, metanol sau diclormetan sau într-un amestec format din acesti solventi cu amoniac sau cu o amina primara, obtinîndu-se compusul cu formula generala I, sub forma de baza libera si eventual se transforma într-o sare acceptabila farmaceutic.
Patent TW-225506-B (TW)
Title: An airless tyre
Inventor: LU TZAY-CHWAN
IPC: B60C7/24
Filed: 1992-02-13
Granted: 1994-06-21
Abstract: An airless tyre consists of one rubber tyre, one wheel rim, and one disk cover. Of which, the rubber tyre is made up of some flexible steelz-strips, which are crossed each other with their ends and middles rivetedby three steel strips into a rectangular steel belt. The ends of this steel belt then are fastened together into one proper sized ring frame. Then thesteel ring frame is covered internally and externally with fine steel nets. And finally it is molded and covered with rubber in molding die.The wheel rim is of hollow D-shape with its rim extended radially. Anotherend of it has several bolts which are extended axially and fastened on it.The disk cover is a disk with several holes matchable with those bolts ofthe wheel rim. The wheel rim is incased into the rubber tyre. The rubbertyre is then fastened between the disk cover and the wheel rim flange.
Patent TW-200583-B (TW)
Title: A structure of coin collector
Inventor: HARAGUCHI KIYOMITSU
IPC: G07D9/00
Filed: 1992-07-17
Granted: 1993-02-21
Abstract: A structure of coin collector, which is characterized in consisting of a body(101), which is a box shape coin box with an opening(113); a cover(120), which slides on the opening of the body and has a coin collection slot(121a) on it; a coin chamber(141), which has an insertion part(141a) for inserting the aforementioned body and on top of which has a droping window(142) which corresponds to the aforementioned coin collection slot to let the coin slide down; a shield plate(129), which has a matching clutch(129c) and a matching part(129d) for supporting the aforementioned cover and enactivates in the direction of shielding the coin collection slot; a locking element(132), which is installed in the aforementioned coin chamber and has a reverse mechanism(132d, 134, 134a) to revert the swing position and a locking clutch(132b) which clutches the protrudent part(132c) and maintains the shield plate at the shield state by restoring the matching clutch on the aforementioned shield plate toward the enactivating direction; an action part(111b), which is installed in the aforementioned coin chamber and upon the slide open of the aforementioned cover touches the protrudent part of the aforementioned locking element to swing the aforementioned locking element to release the aforementioned locking clutch and the aforementioned matching clutch on the shield plate; an action shaft(143), which is installed in the aforementioned coin chamber and opens the aforementioned coin collection slot upon the insertion of the aforementioned coin chamber from the insertion part to let the aforementioned shield plate resist the swinging of enactivation.
Patent TW-226000-B (TW)
IPC: B23K5/20
Filed: 1992-08-12
Granted: 1994-07-01
Abstract: An apparatus for ultrasonically welding sealing seams on solvent packages is described. The apparatus has a sonotrode and an anvil (7) which is situated opposite the front end face of the sonotrode. Both the sonotrode and the anvil (7) can be moved on predetermined tracks. 
<??>So that the bearings of the entire machine are not damaged by the vibrations of the sonotrode, and therefore of the anvil as well, while at the same time guaranteeing good hygienic properties, provision has been made according to the invention for the solidly structured anvil to be axially penetrated by at least one inner bore (12, 13, 14) in which a shaft (9, 10, 11) is arranged in a contact-free manner for decoupling of the vibrations via elastic, flexible ring parts (16) while forming an annular gap, the outside diameter of the said shaft (9, 10, 11) being smaller than the inside diameter of the inner bore (12, 13, 14), and for the outside diameter of the elastic ring part (16) to be larger than the inside diameter of the inner bore. 
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Patent TW-252036-B (TW)
IPC: A01N31/08
Filed: 1993-01-21
Granted: 1995-07-21
Abstract: Described are liquid microbicidal agents comprising compounds from the series consisting of o-phenylphenol, p-chloro-m-cresol, p-chloro-m-xylenol and pentachlorophenol and not more than 50% by weight of an organic solvent or solvent mixture, and the preparation and use of these agents.
Patent TW-254857-B (TW)
IPC: A61N1/30
Filed: 1993-02-23
Granted: 1995-08-21
Abstract: The device comprises a switched mode power supply (1) equipped with an electronic switching element (T1), the closing of which supplies an inductor (L1) which discharges, on reopening the element, into a capacitor (C1) across whose terminals the output voltage of the device appears, characterised in that it comprises (a) memory means for recording a series of numbers reflecting successive segments of the predetermined waveform, (b) a clocked digital counter (2), and (c) means (3) for successively loading this counter (2) with each of the numbers of the series as a bound for the counting effected by the counter (2), the latter cyclically closing the switching unit (T1) for a predetermined time interval whenever the counting effected attains the bound thus fixed. <IMAGE>
Patent TW-354300-B (TW)
Title: Process for producing <alpha>-olefin oligomers
Inventor: TANAKA EIJI
IPC: B01J31/14
Filed: 1994-02-15
Granted: 1999-03-11
Abstract: A process for producing <alpha>-olefin oligomers comprising carrying out oligomerization of an substituted or unsubstituted <alpha>-olefin having 2 to 30 carbon atoms in a hydrocarbon solvent by reacting said <alpha>-olefin in a chromium-based catalyst system composed of at least a chromium compound of 1.0 x 10 (-5) to 0.05 mole per 1 L of solvent, an amine of 0.01 to 100 mole per one mole of chromium compound and an alkylaluminum compound of 0.1 to 1.0x10 (4) per mole of chromium compound; wherein the chromium compound is shown as CrXn where X is an organic group having 1 to 30 carbon atoms selected from hydrocarbon, carbon, alkoxy, carboxyl, <beta>-diketonate, <beta>-ketocarboxyl, <beta>-keto ester, amide and carben; inorganic group selected from nitric acid or sulfuric acid; and anionic atoms including oxygen and halogen; n is an integer from 1 to 6; when n is less than 2, X can be the same or different; and valency of chromium is 0 to 6; the amine or metal amide is selected from pyrrole, pyrrole derivative or metal amide derived thereof; and alkylaluminum compound is a trialkyl aluminum compound; with the proviso that: the chromium compound and the alkylaluminum compound are not previously contacted with each other before the amine or metal amide compound and the alkylaluminum compound are fully contacted, and any solution of amine or metal amide and the alkylaluminum compound is prepared from hydrocarbon solvent.
Patent TW-301675-B (TW)
IPC: C23C22/78
Filed: 1994-03-31
Granted: 1997-04-01
Abstract: An acidic substitutional plating bath for zinciferous surfaces, particularly zinciferous metal-plated steel sheet, with which sludge production and equipment corrosion are inhibited and which has an improved heavy metal ion deposition efficiency is provided by an aqueous composition that has a pH of 2 to 4.5 and that contains 1.5 to 40 g/L of at least one heavy metal ion selected from nickel, iron, and cobalt; 0.5 to 10 g/L of phosphate ions; 1 to 250 g/L of sulfate ion; and 1 to 20 g/L of organic acid.
Patent TW-381230-B (TW)
Title: Image display apparatus, computer apparatus, computer system equipped with both of them and control method of computer system
Inventor: TANIZOE HIDEKI
IPC: H04N9/29
Filed: 1994-04-01
Granted: 2000-02-01
Abstract: A computer system executing a degaussing operation of a display monitor, an input-prohibiting/permitting operation of a display-adjusting key and a shifting operation to a waiting state is provided. In the computer system of the present invention, indicating signals indicating the degaussing operation of the display monitor 1', the input-prohibiting/permitting operation of the display-adjusting key and the shifting operation to the waiting state are transmitted from the host computer 2' through a communicating means by means of the manipulation of the keyboard 3 and the like. Then the display monitor 1' executes each operation mentioned above on the basis of the indicating signals. Accordingly, in the computer system of the present invention, each operation described above can be easily executed by means of manipulations of a manipulation-inputting means such as a keyboard and the like connected to the host computer at the hands of an operator.
Patent TW-266206-B (TW)
IPC: A61K31/4402
Filed: 1994-04-14
Granted: 1995-12-21
Abstract: Pyridine derivatives of the formula <CHEM> wherein the ring A stands for an optionally further substituted benzene ring; the ring B stands for an optionally substituted pyridine ring; Q stands for hydroxyl group, or OQ<1> or Q<1> wherein Q<1> stands for an optionally substituted aliphatic hydrocarbon group; and n denotes 0 or 1, or their salts, which have potassium<.>channel opening activity and are useful as therapeutic agents of circulatory diseases such as angina pectoris, hypertension, etc.
Patent TW-242637-B (TW)
IPC: C08J3/03
Filed: 1994-04-22
Granted: 1995-03-11
Abstract: The process consists in copolymerising a hard monomer such as methyl methacrylate and a flexible monomer such as butyl acrylate, in the presence of methacrylic anhydride. Application to paints.
Patent TW-275122-B (TW)
Title: Mandarin phonetic waveform synthesis method
Inventor: DING PEIR-YIH
IPC: G10L13/08
Filed: 1994-05-13
Granted: 1996-05-01
Abstract: A mandarin phonetic waveform synthesizing method that could realize random modulation comprises: one phonetic synthesis unit database including sample data of Mandarin 1300 basic vocals and synthesized related baseperiod label and energy data in combination of baseperiod synchronous waveform, storing as basic data of Mandarin phonetic synthesis in file; one pre-processing unit including synthesis unit corresponding module, phone modification module and synthesis unit cut module, when we synthesize Mandarin sentence of specified phone, extracting needed synthesis unit from phonetic synthesis unit database, adjusting specified phone, and cutting synthesis unit into subunit of baseperiod synchronization; one kernel synthesis unit including baseperiod synchronization length calibration module, overlay adding synthesis module and waveform size reset module, reorganizing cut synthesis subunit according to modified phone and through rest to get synthesized Mandarin phonetic sample; one post spectrum modification unit including spectrum soothing module and baseband feature enhanced comb filter, modifying Mandarin phonetic sample completed by kernel synthesis unit on spectrum, making spectrum between syllables extend smooth and removing baseband characteristic of its original unit, making synthesized Mandarin phone with clear, fluent and natural features.
Patent TW-253069-B (TW)
Title: Process of CMOS device
Inventor: CHANG WEN-YUEH
IPC: H01L21/335
Filed: 1994-05-23
Granted: 1995-08-01
Abstract: A CMOS device includes: - Si substrate; - P-type well formed in the substrate; - N-type well formed in the substrate; - PMOS device with P+ source area and P+ drain area formed in the N-type well; - NMOS device with N+ source area and N+ drain area formed in the P-type well; - guard ring formed in one of the well areas, located between the drain of the PMOS device and the drain of the NMOS device, and the guard ring with a junction depth larger than the source and the drain's, and collecting the base current of parasitic bipolar junction transistor formed in the CMOS device.