baber/WOPTO huggingface dataset:
Patent KR-20010012812-A (KR)
IPC: C12N15/09
Filed: 1998-05-20
Abstract: New polypeptide comprises an immunogenic portion of a Mycobacterium tuberculosis antigen (or a variant of the antigen differing only by conservative substitutions and/or modifications), in which the antigen comprises one of the 23 amino acid sequences (given in the specification) or the antigen is encoded by: (i) one of the 23 DNA sequences (given in the specification) encoding the 23 amino acid sequences; (ii) sequences hybridising to (i) under moderately stringent conditions, or (iii) sequences complementary to (i) or (ii). Also claimed are: (1) DNA molecules encoding the polypeptide; (2) expression vectors comprising (1); (3) host cells (optionally E. coli, yeast or mammalian) comprising vector; (4) compositions comprising DNA molecule with one of the 11 nucleotide sequences (given in the specification) and a carrier; (5) fusion proteins comprising polypeptide and known M. tuberculosis antigen or comprising at least two of polypeptides, and (6) vaccines comprising non-specific immune response enhancer (optionally an adjuvant) and polypeptide/DNA/fusion protein/DNA sequence of (C)/polypeptide encoded by sequences of (4) or complementary or hybridising sequences.
Patent KR-20010013103-A (KR)
Inventor: PFAEFFLI PAUL
IPC: A61P25/22
Filed: 1998-05-27
Abstract: The invention provides compounds of formula (I), wherein R 1 to R 6 are as defined in the description, and a process for preparing them. The compounds of formula (I) are useful as pharmaceuticals.
Patent KR-20010013173-A (KR)
Inventor: MASUDA TAKASHI
IPC: H01L23/488
Filed: 1999-03-29
Abstract: A soldering material for die bonding which comprises an eutectic of tin and gold having a composition ratio showing an eutectic point for a state wherein a substantial composition ratio of tin to gold is greater than unity.
Patent KR-20010068579-A (KR)
Title: Water-soluble macrocyclic fullerene main-chain polymers and process for the preparation thereof
Inventor: GEKELLER KURETE E
IPC: C08B37/00
Filed: 2000-01-07
Abstract: PURPOSE: A water-soluble macrocyclic-fullerene main chain polymer is provided, which shows high water-solubility and is biologically and biomedically useful due both a macrocyclic molecule function and a fullerene function. And a method for preparing the same is also provided. CONSTITUTION: The water-soluble fullerene main chain polymer is represented by the formula (1) of Fx-(M/G-Fx-)nM/G-Fx. In the formula, Fx is a fullerene or derivative thereof; M is a macrocyclic molecule; G is an aliphatic or an aromatic diamine compound; M/G is a macrocyclic host-diamine guest complex; n is an integer of 10-20; and - is a regular covalent bond between Fx and M/G or a cross-linking bond including other elements. The method comprises steps of: (i) mixing a macrocyclic compound with an aliphatic or an aromatic diamine compound and then stirring the mixture to form a complex thereof; and (ii) reacting the complex with a fullerene by a nucleophilic addition reaction.
Patent KR-20000018175-A (KR)
Inventor: CHOE JAE WEON
IPC: G06F17/00
Filed: 2000-01-17
Abstract: PURPOSE: An automatic device for order-typed homepage of customer-centered is provided to make own homepage having special purpose according to the individual preference by selecting the menu based on the window system and by inputting the minimum required information and to maintain the homepage easily even though the beginner or a person without specialty. CONSTITUTION: The automatic device for order-typed homepage of customer first comprises: a mode constructing wizard for making the index page if a user selects the frame structure, ground frame, picture, moving picture, count, a shape of menu button and background music according to the individual preference; a menu constructing wizard for adding the new menu and deleting the needless menu according to the request of the user when the predefined menu system needs to be updated; a content constructing wizard for adding and updating the content to the home page easily without correcting the home page source directly. Thereby, it is possible to make true order-typed home page of customer-centered.
Patent KR-20000030217-A (KR)
Inventor: JIN GI CHANG
IPC: C09J175/04
Filed: 2000-02-10
Abstract: PURPOSE: An adhesive having high adhesive strength, thermal resistance and water resistance is provided which is used by adding urethane in aqueous acryl emulsion urethane adhesives prior to applying. CONSTITUTION: The aqueous acryl emulsion urethane adhesive is obtained from a method characterized in that urethane curing agent consisting of 20-30 wt.pts. of diisocyanate, 35-45 wt.pts. of polyol, 5-10 wt.pts. of catalyst and additives, and 25-40 wt.pts. of solution is added to aqueous acryl emulsion adhesive consisting of 40-70 wt.pts. of acryl emulsion of 60%, 10-25 wt.pts. of adhesive paste of 50%, 30-45 wt.pts. of stone powder such as calcium carbonate, silica and talc, and 3-10 wt.pts. of additives such as dispersing agent, viscosity improving agent, plasticizer and stabilizer.
Patent KR-20000030226-A (KR)
Inventor: LEE JEONG MIN
IPC: B65D77/28
Filed: 2000-02-08
Abstract: PURPOSE: An outlet bar for a beverage container is provided to inlet air for easily sucking content. CONSTITUTION: An outlet hole(12) in the same line of a sucking strow, discharges content after a cap(20) is uncovered. At that time, air is inlet inside a container through an air inlet hole(13). When a punching pin(11) is inserted in a sucking strow(46), the air inlet hole of a body(10) is placed on the air inlet hole of the sucking strow and the other part blocks the air inlet hole of the sucking strow. Therefore, when used, the outlet hole discharges content and the air inlet hole inlet air inside the container.
Patent KR-20010084455-A (KR)
Title: Liquid Crystal Projective Type Display Apparatus Using Optical Diffraction Phenomenon
Inventor: CHOI YU JIN
IPC: G09F9/30
Filed: 2000-02-25
Abstract: PURPOSE: A liquid crystal projection display is provided which not only increases light efficiency but also uses easy light diffraction phenomena. CONSTITUTION: In a liquid crystal projection display diffracting an indent light into the liquid crystal (40) by differing directions of electric fields impressed to liquid crystal per domains, the liquid crystal projection display using light diffraction phenomena comprises liquid crystal infused into between a front surface substrate (32) and a back surface substrate (38); an upper electrode pattern which is formed on the front surface substrate so as to partially impress electric fields to the liquid crystal per the domains; and a lower electrode pattern which is formed on the back surface substrate so as to be shifted for the upper electrode pattern, thereby partially impressing electric fields to the liquid crystal per the domains, wherein a twist angle of the liquid crystal is an angle of 50 to 100 degrees, the upper and lower electrode patterns (34,36) have stripe shapes, the upper and lower electrode patterns are reciprocally shifted as long as 1/2 pitches, an electrode width of the electrode patterns is 5 to 10 microns while a gap between electrodes of the electrode patterns is 15 to 30 microns, the liquid crystal is an optically compensated birefringent (OCB) mode liquid crystal, and the method further comprises alignment films each of which are formed on the front surface substrate and the back surface substrate respectively and rubbed so that the alignment directions are perpendicular to each other.
Patent KR-20010091739-A (KR)
Inventor: LEE EUN RYEONG
Filed: 2000-03-17
Abstract: PURPOSE: An internet business consulting system is provided to supply a knowledge service based on a portal/search engine and a graded evaluation as a personal object service and to supply information and a consulting service with respect to a purchase of a client and a service using form using a web data mining solution as a company-objected service. CONSTITUTION: A personal client system(100) may perform a purchase and a site movement based on an evaluation with respect to sites of a plurality of companies registered in Ibizrank(200). If a purchase is performed, the personal client system(100) receives a predetermined amount. If a client buys a commodity and uses a service, a company client system(300) evaluates a site of a company, and pays a predetermined amount based on buying information of each client being stored in sites of each company. The Ibizrank(200) analyzes information with respect to a purchase and a service using of a client, and suggests a report to each company, respectively.
Patent KR-20000049483-A (KR)
Inventor: LEE HUN
IPC: G09B5/06
Filed: 2000-03-28
Abstract: PURPOSE: An apparatus for learning foreign language conversation using comparison of voice sound signal is provided to be capable of evaluating whether a learner exactly speaks a conversational sentence presented or not, the learner's pronunciation is exact or not, and the learner's accent is exact or not by comparing a standard voice sound signal with the learner's voice sound signal input with a voice sound by the learner. CONSTITUTION: An apparatus for learning foreign language conversation using comparison of voice sound signal comprises a control unit(CPU)(11) provided in a main body to constitute a computer and an external connection unit(21) provided on the outside of the main body to output data to the outside and input data therefrom. The apparatus can be connected to an external computer(22) through the external connection unit(21), so that the data regarding to a learner recorded in the apparatus or the data regarding to the other learner being in an external site is transmitted or received and also a program for upgrade the apparatus is downloaded. If the apparatus is connected to a communication station such as a mobile station(23) through the external connection unit(22), upgraded learning data or program and specialized service can be provided from a learning service center connected to a communication network of the communication station. An evaluation to a learner's conservation in the apparatus is carried out by comparing a standard voice sound signal prepared previously with a voice sound signal input by the learner. The standard voice sound signal may be of an analog signal or a digital signal. The comparison between the standard signal and an input signal is carried out in a manner of estimating a comparing value of voice sound signal to the standard signal, wherein the comparing values are estimated according to a similarity of a signal pattern, a sound pitch, and a conformity of accent and then evaluation is carried out according to the comparison values.
Patent KR-20010100253-A (KR)
Inventor: SUNG YANG HWAN
Filed: 2000-03-29
Abstract: 본 발명은 마일리지형 인터넷 복권을 이용한 광고 및 제품 판매 방법에 관한 것으로, 더욱 상세하게는 복권생성프로그램에 의한 인터넷 복권의 발행과 전자메일을 이용한 복권의 신청 및 자동 배부를 위한 마일리지형 인터넷 복권을 이용한 광고 및 제품 판매 방법에 관한 것이다. 본 발명은 인터넷 사용자는 웹서버와 DB서버로 구성된 광고복권 발행 호스트에 접속, 이메일 아이디와 연령, 성별, 직업, 사고 싶은 품목을 등록하고 광고가 게재된 인터넷복권 발송을 요청한다. 호스트는 사용자가 신청한 복권에 사용자의 관심분야와 관계 있는 광고를 게재한 후 현금과 호환성이 있는 마일리지형 포인트를 부여, 사용자에게 이메일로 자동 발송한다. 사용자는 이메일로 받은 복권을 확인, 당첨복권의 일렬번호와 당첨된 복권에 부여된 포인트를 수신된 이메일 양식으로 반송하면 호스트에서 이를 확인, 복권번호와 당첨금이 미리 저장된 데이터와 일치할 경우 사용자 계정에 당첨된 포인트를 적립해 준다, 사용자는 이 포인트를 이용, 쇼핑몰에서 물품 구매시 포인트에 해당하는 금액만큼의 현금 사용 효과를 얻는다.
Patent KR-20000071662-A (KR)
IPC: B29C65/00
Filed: 2000-04-12
Abstract: Shell-like parts(2,3) are injection molded and the opposing edges of the shells have projections(8,9) whose flanks(10,11) ar heated to enable the shell edges to be welded together. An Independent claim is made for a vehicle fuel container produced by welding together shell-like parts(2,3) with a heating element(6) at the welding edges.
Patent KR-20010039569-A (KR)
Title: NOVEL 7-AMINOPYRIDO [2,3-d] PYRIMIDINE DERIVATIVES
Inventor: FURUKAWA KAZUHITO
IPC: A61K31/519
Filed: 2000-04-14
Abstract: PURPOSE: Provided are novel 7-aminopyrido (2,3-d) pyrimidine derivatives of the formula(I) or their pharmaceutically acceptable salts or hydrates which are useful as a drug preparation for bronchial asthma. CONSTITUTION: 7-aminopyrido (2,3-d) pyrimidine derivative is represented by the formula(I), wherein R1 is hydrogen, low alkenyl, phenyl or oxo; low alkoxy group; optionally substituted phenyl by at least low alkyl, low alkoxy, carbonyl, low alkoxycarbonyl, mercapto, halogen, trifluoromethyl and/or nitro; naphthal; furyl; optionally substituted isooxazol by at least low alkyl; optionally substituted pyridyl by at least low alkyl and/or halogen; optionally substituted thienyl by halogen; and optionally substituted low alkyl by a substituent selected from 1,3-dioxolanyl; and R2 to R4 are individually hydrogen, halogen, low alkoxy, benzyloxy, or carboxyl or low alkoxycarbonyl.
Patent KR-20010096747-A (KR)
Title: Propagation method for wild flower
Inventor: KIM KI HYUN
IPC: A01G1/00
Filed: 2000-04-14
Abstract: PURPOSE: A method for wet planting roots of wild flower is provided to increase breeding coefficient and budding rate of wild flowers by cutting roots of the flower and wet spray-grafting the cut roots to a desired position. CONSTITUTION: The method comprises several steps of selecting(S1) proper seeds among root-breeding wild flowers; seeding(S2) the selected seeds; growing(S3) the seeded plants for 2 years; cutting(S4) roots of the flower to generate at least two embryos after the growing period; keeping(S5) the cut roots in cold storage before the roots sprouting; and mixing(S6) the stored roots with soil and wet spray-grafting the mixture to a desired position including a cut area in public engineering works and/or a land developed area. The wet spray-grafting process may call as "root-spray" method.
Patent KR-20010014743-A (KR)
Inventor: LANGNER FRANK
IPC: G01L3/10
Filed: 2000-04-17
Abstract: PURPOSE: A device is provided which is cheaply produced and attaining exact balancing with a small necessary space. CONSTITUTION: A device is a measurement bridge circuit having at least two layers of balancing resistor printed on a substrate whose balancing resistor also has printed connection contacts (61 and 62) and balances the measurement bridge circuit of which resistance of the balancing resistor is variable by a notch S in the resistor material for balancing the bridge circuit. The geometrical shape and contact connection of the balancing resistor are determined so that the hypothetical current line (i) in balanced state is extending almost along intermediate direction.
Patent KR-20010096993-A (KR)
Inventor: KWON IK GEUN
IPC: D06F23/02
Filed: 2000-04-19
Abstract: 본 발명은 드럼세탁기의 터브에 관한 것으로, 드럼세탁기의 터브의 후방부 구조를 개선하여 조립 및 제작이 용이하며, 상대적으로 가벼운 드럼세탁기의 터브를 제공할 수 있도록 한 것이다. 
     이를 위해 본 발명은, 원통형의 터브중심부와, 이 터브중심부의 전방에 결합되는 터브전방부 및, 상기 터브중심부의 후방에 결합되는 터브후방부로 이루어진 스테인레스 스틸로 된 터브와; 상기 터브 내측에 설치되는 드럼과; 상기 드럼의 후단부에 연결되어 모터의 구동력을 드럼에 전달하는 드럼축과; 상기 드럼축의 외주면 상에 결합되는 베어링 및; 상기 베어링이 내설되며, 상기 터브후방부의 중앙에 결합되는 베어링하우징을 구비한 드럼세탁기에 있어서, 상기 터브후방부와 베어링하우징은 플라스틱 재질로 일체로 형성된 것을 특징으로 하는 드럼세탁기의 터브가 제공된다.
Patent KR-20000050082-A (KR)
Inventor: KO SEONG UK
Filed: 2000-05-15
Abstract: PURPOSE: A method for operating electronic commerce using a local area network(LAN) is provided to make the customers order products through terminals without visiting stores in a housing complex, by making store owners identify the products through terminals of the stores and deliver the products to the customers. CONSTITUTION: A method for operating electronic commerce using a local area network(LAN) comprises the steps of: making a resident of a housing complex input a self identification(ID) and a password to store the ID and the password in a resident list storage; making a store owner input a self ID and a password to store the self ID and the password in a store list storage; making the resident input the self ID and the password in a store terminal to input a product list and product amounts, and storing the product list and the product amounts in an order list storage with an order number; making the store owner input the self ID and the password to input products, stock amounts, and prices, and storing the products, the stock amounts, the prices in a product list storage; making a controller compare data from the step of storing the product list/the product amount with data from the step of storing the products/the stock amounts/the prices, and if the data are equal, making the controller transmit order details and a resident address to the store terminal; making the store owner identify the order details to deliver ordered products to the resident; and making the resident receive the delivered products and pay money for the products.
Patent KR-20010104873-A (KR)
Inventor: BAE GYEONG HWA
IPC: G06F17/30
Filed: 2000-05-16
Abstract: 개시된 내용은 메타 검색엔진을 사용하여 전세계의 수많은 전문검색엔진을 통해 수집한 검색결과를 실시간으로 인식하고, 검색결과를 사용자가 입력한 검색 키워드와 유사한 주제별로 자동으로 분류하여 사용자에게 제공하도록 하는 것이다. 
     본 발명은 메타검색 서버에서 복수의 검색엔진 접속 데이터를 데이터베이스로 구축하고, 복수의 클라이언트 PC 사용자들의 통신 프로그램 실행에 따른 메타검색 서버로의 접속이 이루어진 후 해당 클라이언트 PC 사용자가 입력하는 특정 검색 키워드에 따라 복수의 검색엔진을 연결하여 메타검색을 수행하고, 복수의 검색엔진에서 수행된 검색 결과를 해당 사용자가 입력한 특정 검색 키워드 및 검색 키워드와 유사한 주제별 키워드에 따라 자동으로 분류하며, 자동으로 분류된 특정 검색 키워드에 따른 검색 결과를 해당 클라이언트 PC로 출력한다. 
     따라서, 본 발명은 단 한번의 검색으로 주제별로 분류된 검색 결과를 얻을 수 있어 사용자가 원하는 검색결과를 손쉽게 찾아볼 수 있으며, 이에 따라 기존의 검색엔진과는 비교할 수 없는 검색결과의 정확도를 향상시킬 수 있는 효과를 제공한다.
Patent KR-20000077320-A (KR)
Title: 기준 전위를 가지는 집적 메모리 및 상기 메모리에 대한동작 방법
IPC: G11C11/409
Filed: 2000-05-18
Abstract: 본 발명은 두 비트 라인들(BL1, /BL1) 상의 공통 기준 전위(VREF)를 생성하기 위하여, 처음에 제 1 스위칭 소자(S1)와 두 기준 메모리 셀들(RC)의 선택 트랜지스터들(T)을 턴 온 시키고, 특정 시간 주기(△t) 후에, 선택 트랜지스터들을 턴 오프 시키는 반면에, 제 1 스위칭 소자는 온 상태로 남아있고 두 비트 라인들 사이의 전위차(2U1)를 보상하는 제어 유니트(C1)를 포함하는 메모리에 관한 것이다.
Patent KR-20010029735-A (KR)
Title: Process for the preparation of vinyl pyrimidine derivatives
Inventor: PUENTENER KURT
IPC: C07D239/46
Filed: 2000-05-23
Abstract: PURPOSE: Provided is a method for producing vinylpyrimidine in excellently high yield by vinylation of a pyrimidine derivative using a vinylborane compound so as to improve both economical and environmental problems. CONSTITUTION: The vinylpyrimidine of formula(I) is produced by the steps of: reacting a compound of the formula(II) with borane compound in the presence of Pd complex; additionally reacting a product of the formula(I) (wherein, R2 is hydrogen) with a compound of the formula(IV) in the presence of Lewis acid. In the formula(I), R1 is hydrogen or carboxylester group, and R is hydrogen or a group of formula(a)(wherein, Ra is hydrogen, a protective group or a hydrolyzable group under physiological condition. In the formula(II), R21 is hydrogen or a group of formula(a)(wherein, a hydroxy group can be protected), R3 is bromo, chloro or iodo, and R1 is described as in the above. In the formula(IV), Rb is a protective grop of hydroxy group and Z is a leaving group.
Patent KR-20010109761-A (KR)
Inventor: LEE JAE HONG
Filed: 2000-06-02
Abstract: 본 발명은 밀폐용기에 관한 것으로 측면부재 및 저면부재로 형성하되 상기 측면부재의 상단 일측에 내측과 외측으로 돌출부를 형성한 수납부와, 상기 측면부재의 상부 끝단과 결합하도록 하측으로 개구되며 내측 방향으로 서로 마주보도록 돌출되는 걸림턱이 형성된 결합홈을 구비한 커버로 본체를 구성하되 상기 결합홈에 측면부재의 상부 끝단이 완전히 결합하면 상기 돌출부는 결합홈의 내측 벽면에 밀착되어, 수납부 측면부재의 상부 끝단과 커버 결합홈의 기밀성이 향상되고 기존의 생산공정으로 용이하게 제작할 수 있으며 냉장고나 냉동고에 넣어 사용하는 음식 보관용 밀폐용기에 사용하기 적당하므로 사용의 편의성이 증대되는 것이다.
Patent KR-20010110910-A (KR)
Inventor: KIM YU SEONG
Filed: 2000-06-09
Abstract: 본 발명에 따른 고유전체 캐패시터의 제조 방법은 반도체 기판상에 형성된 층간 절연막을 패터닝하여 접합부가 노출되도록 콘택홀을 형성하고 상기 콘택홀내에 플러그를 형성하는 단계와, 전체 상부면에 제 1 절연막을 형성한 후 상기 제 1 절연막상에 플레이트 전극을 형성하는 단계와, 상기 플레이트 전극상에 제 2 절연막을 형성한 후 상기 제 2 절연막 및 플레이트 전극을 순차적으로 패터닝하는 단계와, 전체 상부면에 유전체막을 형성한 후 열처리하는 단계와, 상기 유전체막상에 금속층을 형성한 후 상기 제 2 절연막이 노출될 때까지 상기 금속층 및 유전체막을 전면식각하여 패터닝된 상기 제 2 절연막과 플레이트 전극의 측벽에만 상기 유전체막과 금속 스페이서가 잔류되도록 하는 단계와, 노출된 부분의 상기 제 1 절연막을 제거하여 상기 플러그를 노출시킨 후 상기 플러그를 포함하는 전체 상부면에 금속층을 형성하고 상기 제 2 절연막상에 증착된 금속층을 제거하여 상기 플러그와 연결된 실린더 형태의 저장전극이 형성되도록 하는 단계를 포함하여 이루어진다.
Patent KR-20010020975-A (KR)
Title: Non-iterative method for obtaining mass flow rate
Inventor: WICKERT THOMAS EDWARD
IPC: G01F1/42
Filed: 2000-06-12
Abstract: PURPOSE: A method for determining mass flow is provided to determine and calculate mass flow by making fluid flow to a restriction portion of a constant flow passage area in a pipe, respectively sensing fluid pressure at a first position upstream of the restriction portion and a second position downstream of it, using a function equation of Reynolds number representing a delivery coefficient determined based on both pressure values and flow calibration data of the restriction portion. CONSTITUTION: A venturi tube(10) is disposed in a pipe(12), a pressure(P1) is detected at a position(14) upstream of the flow restriction portion(minimum diameter d) in the venturi tube(10), and a pressure(P2) is detected at a position(18) of a joint portion downstream of the flow restriction portion. A function equation of Reynolds number Rd related to d representing a delivery coefficient C of the venturi tube(10) is C=a2Rd2+a1Rd+a0, and can be transformed to 0={a2Rd2/(qm/C)}qm2+(a1Rd/C-1)qm+a0 qm/C. The quadratic equation is resolved in relation to the mass flow qm, and positive values of two roots are called qm. a0, a1, and a2 are polynomial coefficients and can be determined in a regression analysis on flow calibration data.
Patent KR-20010020986-A (KR)
Inventor: MAKINO EIGI
IPC: H03M7/30
Filed: 2000-06-14
Abstract: PURPOSE: A coding device is provided to perform coding process without an overload distortion. CONSTITUTION: A data input port(1) inputs m bit digital data. A data output port(2) outputs coded k bit data. A data storage unit(8) memories N samples of m bit data. A Max value detect and memory unit(9) detects and memories the Max value. A Min value detect and memory unit(10) detects and memories the Min value. An orthogonal transforming operator(11) codes the data with some operational forms. A data control unit(12) contains n bit counter. By the data control unit(12), a read/write control line(13) transmits read/write control signal to the storage unit(8) a data load control line(14) transmits load control signal to the orthogonal transforming operator(11), and a register renewal control line(15) transmits register renewal signal to the Max/Min value detect and memory units(9,10).
Patent KR-20010020999-A (KR)
Title: Semiconductor device and method of fabricating the same
Inventor: NOMA ATSUSHI
IPC: H01L21/02
Filed: 2000-06-16
Abstract: PURPOSE: A semiconductor device and a method for fabricating thereof are provided to prevent attack oxygen into a conductive diffusion preventing film. CONSTITUTION: A protective insulating film(14) is deposited on a field effect transistor formed on a semiconductor substrate(10). A contact plug(15) having a lower end portion connected to an impurity diffusion layer(13) of the field effect transistor is formed in the protective insulating film. A conductive diffusion preventing film(16) connected to an upper end portion of the contact plug(15) is formed on the protective insulating film. A capacitor lower electrode(17) is formed on the diffusion preventing film(16). Sidewalls(18) made of an oxidation resistant material are formed on at least the side surfaces of the diffusion preventing film. A capacitor insulating film(19) made of an insulating metal oxide is formed over the capacitor lower electrode and the sidewalls. A capacitor upper electrode(20) is formed on the capacitor insulating film.