baber/WOPTO huggingface dataset:
Patent EP-0990195-B1 (EP)
Inventor: ANDREOLI CORNEL
IPC: G03F7/00
Filed: 1999-04-28
Granted: 2001-10-24
Abstract: L'invention concerne un procédé de fabrication d'un support en porte-à-faux pourvu d'une pointe, qui comporte les étapes consistant à former une encoche de type pointe dans un substrat, déposer une couche de résine photosensible de façon à remplir ladite encoche de type pointe et recouvrir au moins un partie dudit substrat, et structurer photolithographiquement ladite couche de résine photosensible pour façonner ledit support en porte-à-faux pourvu d'une pointe à partir de ladite résine photosensible.
Patent EP-1080032-B1 (EP)
Inventor: LOEOEV THORSTEN
IPC: B67D3/00
Filed: 1999-04-22
Granted: 2003-07-23
Abstract: A pressure container for batch gasification of liquid includes a container filling opening (9) in its upper part and has mounted therein a float arrangement (8) for closing the container filling opening when a certain liquid level (7) is reached, a beverage dispensing opening (3), and a gas nozzle (20) which discharges into the container. The container (5) is indivisible and includes a side-wall opening (27). The gas nozzle (20) is fixed in a mounting base (31) that can be inserted into the container through the side-wall opening (27) and secured firmly in a position in which the edges of the base (31) lie sealingly against the inner container surface surrounding the opening. That part of the mounting base (31) located on the inside of the container (5) is provided with a mechanism for pivotal attachment of the float arrangement.
Patent EP-1097082-B1 (EP)
Inventor: GUZOWSKI JACEK
IPC: B65B61/06
Filed: 1999-06-07
Granted: 2005-09-07
Abstract: A splitting apparatus includes a splitter member with a plurality of blades, and a splitting guide configured to anchor articles so that an article to be split is anchored on a splitting guide when the splitter member is moved across the splitting guide. The apparatus includes a gate which is controlled by a gate controller that selectively opens and closes the discharge aperture positioned adjacent the splitting guide so that the split article can be discharged from the splitting guide. A staging platform is provided adjacent the splitting guide for aligning the articles to be split with the splitting guide and a staging advancer is provided to move articles from the staging platform to the splitting guide, and to discharge the split articles after splitting.
Patent EP-1086249-B1 (EP)
Inventor: HERRNSTADT CORINNA
IPC: C12Q1/68
Filed: 1999-06-14
Granted: 2003-03-26
Abstract: Compositions and methods based on quantification of extramitochondrial DNA (exmtDNA) sequences are provided that are useful for detecting the presence of or risk for having a disease associated with altered mitochondrial function, and for identifying agents suitable for treating such diseases. The exmtDNA sequences have strong homology to authentic mitochondrial DNA (mtDNA) sequences.
Patent EP-1096868-B1 (EP)
Inventor: CAPPEL CRAIG E
IPC: B65D33/06
Filed: 1999-07-01
Granted: 2005-12-28
Abstract: A plastic bag comprises opposing body panels (12, 14) fixedly connected to each other along a pair of sides and a bottom bridging the pair of sides. A reclosable zipper (32) extending along a mouth portion formed opposite the sealed bottom of the plastic bag. The zipper is preferably free of graspable upper pull flanges in order to best accommodate a slider (32) and inhibit operation of the zipper without the slider (32). The slider (32) is mounted to the zipper for movement between a closed position and an open position. The zipper is closed while the slider is in the closed position. The zipper is opened in response to movement of the slider to the open position. To inhibit tampering with the contents of the bag, the bag includes a tamper-evident feature (40). In one set of embodiments, the tamper-evident feature (40) initially maintains the slider in the closed position and allows the slider to move away from the closed position toward the open position in response to removing or breaking the tamper-evident feature. In another set of embodiments, the tamper-evident feature initially maintains a mouth portion of the plastic bag in a folded position and allows the mouth portion to be unfolded in response to removing or breaking the tamper-evident feature.
Patent EP-1144895-B1 (EP)
Inventor: BUERGER JOACHIM
IPC: H01M8/24
Filed: 1999-07-21
Granted: 2004-10-13
Abstract: A method for redeveloping or renovating sewer conduits and sewer ducts, with which a large amount of scrap rubber can be used. Tube of low inherent stability are produced from scrap rubber and plastic material. These tubes are introduced into old sewer pipes of the sewer ducts, the tube of low inherent stability being supported by the wall of the old sewer pipe.
Patent EP-1044287-B1 (EP)
Inventor: DUBOIS PHILIPPE
IPC: C22C38/22
Filed: 1999-09-28
Granted: 2011-11-02
Abstract: The invention concerns a steel composition comprising, expressed in wt.%: 0.2 to 0.4 % of C; 0.8 to 2 % of Cr; 0.6 to 2 % of Mo; 0.05 to 0.4 % of Al; and as the case may be, not more than 0.5 % of Si; not more than 1.5 % of Mn; not more than 1.5 % Ni; not more than 0.5 % of V; the rest consisting of iron and residual impurities; said composition Cr, Mo, V and Al contents expressed in wt.% satisfies the following relationship: 4 </= 3Cr + Mo + V + 2Al </= 8. The invention also concerns a method for making treated and nitrided parts, made of said compositions.
Patent EP-1124504-B1 (EP)
Inventor: VRBA ANTHONY C
IPC: A61F2/06
Filed: 1999-10-06
Granted: 2004-10-06
Abstract: A medical device delivery system, having a rolling retractable sheath covering a medical device mounting region on the system is disclosed. The rolling retractable sheath comprises an inner wall and an outer wall and may be formed of one or more materials, optionally porous. Optionally, a lubricant may be applied selectively to the interior and exterior walls of the stent.
Patent EP-1151041-B1 (EP)
Inventor: ADEDEJI ADEYINKA
IPC: C08L53/02
Filed: 1999-10-12
Granted: 2006-11-02
Abstract: The invention relates to a semi-transparent thermoplastic composition of a polyphenylene ether resin, a non-elastomeric styrenic resin, and an unsaturated elastomeric styrenic block copolymer. The compositions of the invention may also contain at least one additive selected from the group consisting of stabilizers, dyes, pigments, mineral oil, and mixtures thereof and exhibit enhanced physical properties, especially ductility. The invention also relates to articles formed out of the compositions of the invention as well as methods to make the compositions.
Patent EP-1129095-B1 (EP)
Inventor: HILER GEORGE DOUGLAS II
IPC: C07D487/08
Filed: 1999-11-09
Granted: 2004-09-15
Abstract: The present invention relates to a process for preparing a cross-bridged tetraaza macrocyclic ligands having formula (I), wherein each R is independently C1-C22 linear alkyl, C1-C22 branched alkyl, C7-C22 alkylenearyl, C8-C22 alkyl substituted alkylenearyl, and mixtures thereof; each index n is independently from 0 to 3, by contacting the a di-quaternary cis tetracycle precursor with as little as one equivalent of a borohydride reducing agent. The present process eliminates the need to use up to a twenty fold excess of reducing agent thereby further eliminating the need for work-up conditions which liberate significant amounts of hydrogen gas and which requires the disposal of large amounts of boron waste products.
Patent EP-1246813-B1 (EP)
Inventor: PETERSEN HANS
IPC: C07D307/88
Filed: 1999-12-30
Granted: 2003-11-05
Abstract: The invention provides a new and improved method for the preparation of 5-cyano-phtalid, which is a key intermediate in the preparation of the antidepressant compound citalopram.
Patent EP-1149523-B1 (EP)
Inventor: BERGSTROEM JOHAN
IPC: H05K/
Filed: 1999-12-16
Granted: 2003-10-08
Abstract: A tape guide (10) for guiding a carrier tape (2) in a component mounting machine; a tape magazine (40) for receiving at least one such tape guide (10); a system comprising a component mounting machine and at least one such tape guide (10); and a system comprising a component mounting machine, at least one such tape guide (10), and a tape magazine (40). The carrier tape (2) carries components (6) positioned in sequence on the carrier tape (2) and covered by a cover tape (4). The tape guide comprises means for guiding the carrier tape and for exposing the components at a picking position, and is arranged for ready and quick attachment and detachment of the tape guide (10) to and from the component mounting machine or the magazine. The tape guide further (10) lacks feeding means for feeding the carrier tape towards a picking position in the machine, which feeding means are provided in the magazine (40) or in the component mounting machine. <IMAGE>
Patent IE-87312-B1 (IE)
Title: Electrosurgical device
Inventor: MARNO NAGTEGAAL
IPC: A61B18/00
Filed: 2017-01-10
Abstract: Embodiments of the present invention provide an improved surgical instrument having an end effector mounted on the end of an elongate shaft extending from a handle. The end-effector is capable of several different operations, including grasping, cutting, and sealing and/or coagulating tissue, and one of the operations is controlled by a trigger mechanism contained within the handle. In some embodiments, the end effector includes a blade assembly, the trigger mechanism being arranged to drive the blade assembly longitudinally within the elongate shaft in order to cut tissue. Specifically, the trigger mechanism is formed of a three pivot slider-crank mechanism, wherein one of the pivot points comprises a component to which the proximal end of the blade assembly is connected. In this respect, the proximal end of the blade assembly has a distinctive profile corresponding to the internal profile of the component such that the blade can be easily connected to the component without the need for any further features and subsequently retained therein. Such a configuration therefore provides a secure arrangement that simplifies the assembly of the instrument.
Patent IT-1265846-B1 (IT)
Title: Dispositivo per la lettura di documenti aventi informazioni ausiliarie  o contrassegni di diverso colore ottico.
Inventor: CONTI ROMANO
IPC: G06K/
Filed: 1993-02-17
Granted: 1996-12-12
Abstract: Dispositivo per la lettura di documenti comprendenti informazioni principali e informazioni ausiliarie di diverso colore ottico. I documenti presentano un indicatore di posizione e un contrassegno indicatore del colore delle informazioni ausiliarie. Comprende mezzi optoelettronici per percepire l'indicatore di posizione e il contrassegno, atti a pilotare sorgenti luminose o filtri di colore coerenti cromaticamente, con dette informazioni ausiliarie o contrassegni per cui un rilevatore di informazione può leggere le informazioni principali rimanendo "cieco" nei riguardi di quelle ausiliarie che hanno diverso colore ottico.(FIG. 7)
Patent IT-1264953-B1 (IT)
Title: Supporting frame for plates for electrophoretic analysis and automatic equipment for electrophoretic analysis
Inventor: NARDO PIETRO
IPC: G01N/
Filed: 1993-07-20
Granted: 1996-10-17
Abstract: The frame 1 supporting a plate 2 for electrophoretic analysis is provided with two flexible sides 4 which allow plate 2 to bend. The automatic equipment for electrophoretic analysis comprises a migration tank 15 and positioning means 32 through which frame 1 containing plate 2 can be inserted into tank 15 while plate 2 is curved in such a way that the two opposing edges 2a, 2b of plate 2 are immersed in the buffer solution contained in a corresponding compartment 19, 20 of tank 15.
Patent IT-1282787-B1 (IT)
Inventor: GIANNA ROBERTO
IPC: B01D53/84
Filed: 1996-06-04
Granted: 1998-03-31
Abstract: Process for the removal of hydrogen sulfide from gaseous effluents effected by a chemical step, of the separation of this compound to elemental sulfur, and a biological step, of the reoxidation of the ferrous sulfate produced in the chemical step. <IMAGE>
Patent IT-1299228-B1 (IT)
Inventor: BIERI FREDERIC
IPC: B60R7/06
Filed: 1998-05-13
Granted: 2000-02-29
Abstract: An instrument panel for a vehicle, particularly for an automobile, including: at least one first reserved space (1), designed at least to accommodate different components of interior accessories and defined at least partially at the level of one casing component (2), concealing at least partially the running board (3) of the aforementioned vehicle, and framework mechanisms (4) acting together with the aforementioned casing component (2) and/or the aforementioned first reserved space (1), the accessory components being fitted to be secured to the walls of the aforementioned first reserved space (1), and being detachable.
Patent IT-1311889-B1 (IT)
Inventor: PASETTI MARCO
IPC: A61K47/44
Filed: 1999-03-12
Granted: 2002-03-20
Abstract: Tooth pastes comprising:   a) imido-alkanpercarboxylic acids under the form of adducts with cyclodextrins, preferably beta-cyclodextrins, b) aliphatic carboxylic acids having a solubility in water at room temperature higher than or equal to 5% by weight and containing one or more carboxylic functions.
Patent JP-3074385-B1 (JP)
Title: 充填層式冷却方法及び装置
IPC: F27B15/16
Filed: 1999-05-11
Granted: 2000-08-07
Abstract: 【要約】
【課題】  充填層の上側に確実に流動層を形成させて熱 交換の場を２段化するとともに、粉粒体の偏析・偏流を 改善して、高熱効率で、かつ装置の小型化を図る。
【解決手段】  充填層の上側に流動層を形成させるため の、粉粒体入口１８を備えた横断面縮小部３２を本体上 部に有し、本体下部の下部コーン１２の上端付近に、本 体の横断面に対して均一に空気を噴出させるための水平 方向の散気管１６、１６ａを有し、本体内に、充填層下 部に空気を吹き込むための、かつ整流用の内部コーン３ ４を有し、散気管からの空気量及び内部コーンからの空 気量を独立して調整可能とした粉粒体の充填層式冷却装 置であって、上側に流動層４４を持つ充填層２６を形成 させるように、下部コーン１２の上端に円錐台状又は角 錐台状の上部本体１０ａを連結する。
Patent JP-2945379-B1 (JP)
Title: 線香塗装装置
IPC: A61Q13/00
Filed: 1998-05-15
Granted: 1999-09-06
Abstract: 【要約】
【課題】  光輝性が高く荘厳な趣のある金色外観を呈す る線香、およびこの線香を製造する線香塗装装置を提供 すること。
【解決手段】  線香１は、丸棒状に成形された線香母材 ３の表面が、金色塗料の塗装により形成された金色塗膜 ２で被われている。この線香１は、搬送方向と直角横向 きに配した丸棒状の線香母材を載置して搬送する母材コ ンベアと、母材コンベアの上方に配置されて金色塗料を 線香母材の表面に塗布する塗布装置とを備え、塗布装置 が、母材コンベア上の線香母材と接して転動させつつ線 香母材の表面に金色塗料を塗布可能な高さに配置されて いる線香塗装装置により、製造される。そして、吹き付 け塗装により金色塗膜を形成する線香塗装装置により、 製造されることもある。
Patent JP-2909461-B1 (JP)
Title: 多関節ロボット
IPC: B62D57/032
Filed: 1998-06-09
Granted: 1999-06-23
Abstract: 【要約】
【課題】  多関節ロボットに関し、狭隘な場所での高速 移動を可能にするとともに小型化をも可能にする。
【解決手段】  関節の角度を変更しながら尺取り運動を 行なうことにより面２０上で移動を行なう多関節ロボッ トにおいて、移動方向前方に位置する第１の接地部１０ と、第１の接地部１０の後方に少なくとも一つの関節を 介して設けられた第２の接地部８と、第２の接地部８の 後方に少なくとも一つの関節を介して設けられた第３の 接地部３と、第３の接地部３の後方に少なくとも一つの 関節を介して設けられた第４の接地部１とをそなえ、第 １〜４の接地部１０，８，３，１の全てを面２０に接触 させた状態から、第１の接地部１０及び第３の接地部３ を面２０から離隔させ移動方向前方に移動させた後に接 地させ、次いで、第２の接地部８及び第４の接地部１を 面２０から離隔させ移動方向前方に移動させた後に接地 させることにより、尺取り運動による移動を行なうよう にする。
Patent JP-2977538-B1 (JP)
Title: アクセルペダル装着用足位置確認装置
IPC: F02D11/02
Filed: 1998-07-16
Granted: 1999-11-15
Abstract: 【要約】
【課題】  視覚に頼らず感触でアクセルペダルの適正位 置に的確に足先を置き、確実、迅速、適切に又足元がず れることなく長時間踏み続けられるアクセルペダル装着 用足位置確認装置を提供する。
【解決手段】  ベース部２の左端にはフック３が設けら れている。ベース部２の右端に横ずれ防止サイド４が垂 設されている。ベース部２の所定部には、ネジスライド 穴５がアクセルペダル１の幅方向に開口されている。ネ ジスライド穴５には、ボルト６が通され、アクセルペダ ル裏面押さえ板７を貫通してナット８で止められてい る。アクセルペダル裏面押さえ板７の一端部は、アクセ ルペダル１の裏面に掛かるようにアングル７ａが施さ れ、また他端部は、ベース部２の底面を支持するように アングル７ｂが施されている。
Patent JP-2989816-B1 (JP)
Title: 点字鋲
IPC: E01F9/553
Filed: 1998-10-20
Granted: 1999-12-13
Abstract: 【要約】
【課題】  鋲本体と表面材とを別体構造とした点字鋲に おいて、表面材の剥離抑制により耐久性の向上を図る。
【解決手段】  鋲本体１と表面材３とを別体構造とした ものにおいて、上記表面材３を、平板部３１と該平板部 ３１の裏面３１ｂから突出する固定用突部３２とを樹脂 材により一体的に形成して構成し、上記表面材３の取り 付けに際しては、上記固定用突部３２を上記鋲本体１の 貫通孔７に貫挿するとともに、該鋲本体１の下面１ｂか ら突出した先端部３２ａに抜止め部３４を設ける。かか る構成によれば、上記抜止め部３４によって上記表面材 ３の上記鋲本体１からの剥離が機械的に防止されるの で、例えば接着構造の場合に比して、上記表面材３の上 記鋲本体１からの剥離がより一層確実に防止され、点字 鋲の耐久性が向上する。
Patent JP-3022856-B1 (JP)
Title: ナンバープレート位置抽出方式
IPC: G08G1/017
Filed: 1998-12-07
Granted: 2000-03-21
Abstract: 【要約】
【課題】ナンバープレートの位置情報を正確に認識し抽 出する。
【解決手段】 Ａ／Ｄ変換器１９は入力した映像信号１ ８をＡＤ出力３９に変換する。３値化部２０はＡＤ出力 ３９を３値画像出力４０に変換する。番地発生器２２は 番地データ４１を発生する。３値化画像記憶器２１は３ 値画像出力４０を番地データ４１に従って記憶し画像デ ータ４２を出力する。連続数算出部２３は画像データ４ ２から連続候補データ４３を出力する。番地発生器２６ は番地データ４５を出力する。連続数記憶器２４は連続 候補データ４３を番地データ４５に従って記憶し連続デ ータ４４を出力する。プレート位置算出部２５は連続デ ータ４４を入力しプレート候補データ４６を出力する。 並べ替え処理部２７はプレート候補データ４６を入力し プレート候補３３，３４，３５を出力する。
Patent MD-1886-B1 (MD)
Title: Precession gear and process for realization thereof
Inventor: BOSTAN ION
IPC: B23F9/06
Filed: 2000-10-13
Abstract: The invention relates to the mechanical engineering, in particular to the precession gears. The precession gear includes the teeth 1 of a curvilinear profile and the teeth 2 of an arched profile, executed in a satellite gear, installed on the crank 3 of the driven shaft. For the modification of the precession gear teeth profile, it is proposed a process for realization of such gear, wherein the tool 2, effecting the precession motion, is joined with the imobile part through the binding mechanism 4, receiving microdisplacements in the plane XY1 from the cam 5 by means of a lever 6.The result of the invention consists in increasing the bearing capacity of the gear and in expanding its technological possibilities due to the modification of the teeth profile with the modification controlled variable.Claims: 2Fig.: 2<IMAGE>
Patent MD-4387-B1 (MD)
Title: Vertical takeoff and landing device for aircrafts (embodiments)
Inventor: COROBCEANU ION
IPC: F02M35/00
Filed: 2014-09-23
Abstract: The invention relates to the aircraft engineering, in particular to vertical takeoff and landing devices for aircrafts.The vertical takeoff and landing device for aircrafts, according to the first embodiment, comprises a frame (1), made in the shape of a truncated cone with a small base oriented downward relative to the plane of the aircraft. In the region of the small base tangentially, uniformly, in a helical line, at an angle relative to the longitudinal axis are installed energy sources, made in the form of jet engines (2). On the inner surface of the frame (1), above the energy sources, uniformly, in a helical line are installed blades (3), made with an aerodynamic contour, the aerodynamic planes of which are oriented at an angle of attack to the air flow. According to the second embodiment, in the region of the small base there are installed an energy source made in the form of an internal combustion engine and a centrifugal propeller.
Patent NO-333194-B1 (NO)
Title: Sammensetninger og anvendelse av disse for forebygging av toleranse for medisinering
Inventor: AHMED TAHIR
IPC: C08L5/10
Filed: 2001-04-27
Abstract: Foreliggende oppfinnelse omfatter identifiseringer av deler og fremgangsmåter for å bruke den samme for å forebygge toleranse for bronkodilator. Mer spesifikt, vedrører oppfinnelsen identifisering av sammensetninger og fremgangsmåter som er i stand til å hindre toleranse til p-adrenergiske agonister. Fremgangsmåter og sammensetninger ifølge oppfinnelsen er også nyttige som analyttiske redskap for funksjonelle studier og som kombinasjonsterapeutiske verktøy.
Patent NO-338057-B1 (NO)
Inventor: PFEILER JOHANN
IPC: B23K/
Filed: 2005-11-01
Abstract: The method involves heating rail ends to a joining temperature by pressing together faces of rails end. The rails are simultaneously moved relative to one another in an oscillating manner with greatest oscillation amplitude. The rail ends are aligned by aligning one of the contours and cross-sections of the rails. The faces are pressed together to join the rails together. The rails have railroad rails or beams.
Patent NO-331333-B1 (NO)
Title: Apparat for oppsamling og frigiving av magnetiske partikler
Inventor: TUUNANEN JUKKA
IPC: B03C/
Filed: 2005-12-06
Abstract: Oppfinnelsen angår et kar og en stang som brukes i karet for å samle magnetiske partikler fra en væske som inneholder partiklene i karet, eller for å utløse partiklene i en væske i karet. Avstanden fra stangen (3) når den settes inn i karet (1) er stor nok ved hvert punkt til å hindre at det dannes en ring eller del av en ring mellom karet og stangen, hvilken ring ville bli fjernet sammen med stangen. På denne måten blir væsken hindret fra å bli fjernet fra karet sammen med stangen.
Patent NO-338102-B1 (NO)
Title: Lektearrangement og fremgangsmåte for drift av et lektearrangement
Inventor: LEVANDER OSKAR
IPC: B63B35/66
Filed: 2009-03-11
Abstract: Oppfinnelsen vedrører et lekterarrangement som omfatter en lekterenhet med en første ende (11) og en andre ende (12) og en bukserbåtenhet forsynt med en propulsjonsenhet, hvilken lekterenhet er innrettet til å oppta bukserbåtenheten ved sin ene ende. For å oppnå en effektiv fartøyskombinasjon for lasting, transport og lossing av last er lekterenheten (102) innrettet til å oppta en første bukserbåtenhet (2) ved sin andre ende (12) for å kunne skyves av den første bukserbåtenhet (2) med den første ende (11) av lekterenheten i en bevegelsesretning (F) forover. Videre er lekterenheten (101) innrettet til å oppta en andre bukserbåtenhet (3) ved sin andre ende (12) for å kunne trekkes av den andre bukserbåtenhet (3) med den andre ende (12) av lekterenhet i bevegelsesretningen (F) forover.
Patent PL-80840-B1 (PL)
Title: Improvements in the fixing of needle supports[gb1276032a]
IPC: H01J61/52
Filed: 1970-02-05
Abstract: 1276032 Fastenings STAEDTLER & UHL 4 Feb 1970 [8 Feb 1969 17 Jan 1970] 5300/70 Heading E2B [Also in Division D1] Needle supports c are releasably fastened to a cylindrical segment having axial grooves or recesses b in its external surface. The needle supports c are held in the grooves or recesses by a clamping strip f and the groove and/or the clamping strip is wedge-shaped in a plane perpendicular to the axis of the segment. Pairs of needle supports may be clamped in a single groove having a step on one of its side faces (Fig. 7, not shown). The clamping strip may be rigid and screwed to the segment (Fig. 2, not shown) or it may be resilient, e.g. it can have springy flanges, inserts or coverings. The cylindrical segment is mounted in a textile machine.
[GB1276032A]
Patent PL-127459-B1 (PL)
Title: Method of obtaining new derivatives of bezenophenon hydrates showing insect killing properties
IPC: C07F9/06
Filed: 1980-08-30
Abstract: Substituted benzophenone hydrazones of formula I 
<CHEM>
 in which R, Q, R<2> and R<4> have the meaning given in the description. 
<??>The hydrazones have pesticidal activity, especially againct insects and acarids, and pesticidal compositions and methods are described. Methods of making the hydrazones are also described.
Patent PL-154669-B1 (PL)
Title: A method of a self-supporting block of ceramic composite production
IPC: C04B35/65
Filed: 1987-05-06
Abstract: In the present invention, there is provided a method for producing a self-supporting ceramic body by the oxidation of a parent metal to form a polycrystalline ceramic material consisting essentially of the oxidation reaction product of said parent metal with an oxidant, including a vapor-phase oxidant, and optionally one or more metallic constituents. The method comprises the steps of providing at least a portion of said parent metal with a barrier means at least partially spaced from said parent metal for establishing at least one surface of the ceramic body, and heating said parent metal to a temperature above its melting point but below the melting point of the oxidation reaction product to form a body of molten metal. At that temperature, the molten metal is reacted with the oxidant, thus forming the oxidation reaction product. At least a portion of the oxidation reaction product is maintained in contact with and between the molten metal and oxidant to transport the molten metal through the oxidation reaction product toward the barrier means and into contact with the oxidant so that the oxidation reaction product continues to form at the interface between the oxidant and previously formed oxidation reaction product optionally leaving metal dispersed through the polycrystalline material. The reaction is continued to the barrier means to produce a ceramic body having the surface established by the barrier means. A composite is formed by superimposing a barrier onto a filler material, such as a preform, and infiltrating the filler with the polycrystalline ceramic matrix grown to the barrier means.