baber/WOPTO huggingface dataset:
Patent GR-3007111-T3 (GR)
IPC: G01S17/74
Filed: 1993-02-19
Abstract: A device for identification friend or foe (IFF) is described which contains a radio transmitting/receiving device (F) which, in addition to message transmission, is equipped for transmitting, receiving and analysing IFF signals. Furthermore, the IFF device contains a laser transmitter (LS) and a laser receiver (LE) which are coupled to the radio transmitting/receiving device (F) via a control device (G). Unmodulated direction-selective light signals and modulated non- direction-selective radio signals are used for the identification. <IMAGE>
Patent GR-3017982-T3 (GR)
Title: Dental syringe with disposable mouthpiece.
Inventor: HEUILLON ANNETTE
IPC: A61C17/02
Filed: 1995-11-08
Abstract: Dental syringe for spraying air and/or water in dental surgery, of the type comprising a removable disposable means of the cannula type making it possible to prevent microbial and/or viral contamination between two patients, characterised in that the said syringe comprises an adaptor (2) provided, at its proximal part, with a means for connection to the syringe itself and, at its distal part, with a male conical structure (7) capable of receiving a disposable cannula (8) by interlocking, insertion or screwing.
Patent GR-3018649-T3 (GR)
Title: Irrigation device
Inventor: DINUR ELDAD
IPC: A01G25/02
Filed: 1996-01-11
Abstract: An irrigation device including a first interior water path defining member (10) and a second exterior water path defining member (12), cooperating with the first water path defining member to define a circuitous water path including sequential water path components extending generally in three mutually perpendicular directions. <IMAGE>
Patent GR-3019125-T3 (GR)
Title: Process for preparing ergoline derivatives.
Inventor: MANTEGANI SERGIO
IPC: C07D457/12
Filed: 1996-02-28
Abstract: PCT No. PCT/EP91/00104 Sec. 371 Date Sep. 25, 1991 Sec. 102(e) Date Sep. 25, 1991 PCT Filed Jan. 21, 1991 PCT Pub. No. WO91/11447 PCT Pub. Date Aug. 8, 1991.Ergoline derivatives of the formula I: <IMAGE> I  wherein R represents hydrogen or C1-C4 alkyl; R1 represents hydrogen, chlorine, bromine or methyl; either R2 and R3 both represent hydrogen or together represent a chemical bond; R4 represents a C1-C4 hydrocarbon group; each of R5, R6, R8 and R9 independently represents hydrogen or C1-C4 alkyl; R7 represents hydrogen, C1-C4 alkyl, phenyl or C3-C7 cycloalkyl and n is 0, 1 or 2; are prepared by reaction between compounds of the formulae II and III:   <IMAGE> II  <IMAGE> III   and subsequent cyclization of the resultant compounds. The compounds of the formula I are known useful anxiolytic, antipsychotic and anti-parkinson agents.
Patent GR-3019365-T3 (GR)
Title: Total synthesis method for making an indole structure derivative product class, of the triptamine type, in particular, melatonin or N-acetyl-5-methoxytriptamine type, having a high purity degree and easily soluble, for therapeutic use against acquired immuno-deficiency syndromes
Inventor: FRASCHINI FRANCO
IPC: C07D209/48
Filed: 1996-03-19
Abstract: The present invention relates to :   1) a method for the total synthesis of an indole structure derivative product class,of the triptamine type, in particular of the melatonine or N-Acetyl-5-Methoxy-triptamine type; 2) the use of melatonine or N-acetyl-5-methoxytriptamine as a drug with doses from 2 mg to 20 mg per day,in an oral,intramuscolar or endovenous way; 3) the use of melatonine or N-acetyl-5-methoxytriptamine, in combination with an azidothymidine treating process, in order to improve the curative effects.   The subject total synthesis process consists of combining potassium phthalamide and di-bromopropane in order to obtain 3-bromopropylphthalamide;adding, in the presence of ethanol dissolved sodium,acetacetic esther in order to obtain ethyl-2-acetyl-5-phthalimido-penta noate ;adding diazo-p-anisidine so as to obtain 2-carboxyethyl-3-(2-phthalimidoethyl)-5-methoxy-indole. The main feature of the invention is that to the 2-carboxyethyl-3-(2-phthalimidoethyl)-5-methoxy-indole there are added NaOH 2N and 20% H2SO4 in order to obtain raw 5-methoxytriptamine;which is purified by means of hexamethyldisilazane,with the formation of the related mono and bi-derivative therefrom there is obtained the starting product which is purified by means of aqueous methanol. The subject method,in particular,is specifically designed for provided high purity melatonine,or N-acetyl-5-methoxytriptamine,with a great yield,which is water soluble and may be used for therapeutic purposes. The thus obtained melatonine,has such a purity that it can be used,in suitable packages,both in tumoral phrophilaxy and tumoral terapy,as well as against the acquired immuno-deficiency syndromes,o so called AIDS.
Patent GR-3022650-T3 (GR)
Title: Plastic bag for personal-hygiene articles.
Inventor: STARY CHRISTOF
IPC: B65D33/28
Filed: 1997-02-26
Abstract: PCT No. PCT/EP94/00536 Sec. 371 Date Aug. 21, 1995 Sec. 102(e) Date Aug. 21, 1995 PCT Filed Feb. 26, 1993 PCT Pub. No. WO94/19249 PCT Pub. Date Sep. 1, 1994A plastic bag for personal-hygiene articles, in particular for a stack of flexible pads, comprising a sheet-plastic tube forming an essentially cylindrical bag wall, both ends of said bag are initially closed, a suspension string located at one end and at the opposite end of said bag a frangible ring providing an opening allowing pads to be removed, the closure at the first one end being formed by a linear seam running between two diametrically opposite points on the cylindrical wall of the bag and passing through the longitudinal axis of the bag, the suspension string passing through the interior of the bag below the seam.
Patent GR-3024194-T3 (GR)
Title: Method and apparatus for the controlled reduction of organic material.
Inventor: EMERY CHARLES LESLIE
IPC: A62D3/178
Filed: 1997-07-22
Abstract: There is provided a method and apparatus for the controlled non-pyrolytic reduction of organic material comprising subjecting the material to microwave radiation in a reducing atmosphere. An apparatus for carrying out the method comprises a microwave chamber (40) or modules of chambers, at least one microwave generator (32), an antenna (34) connected to each said generator and a reflecting surface (36). Means are provided for feeding (48) the organic material into the chamber (40), removing (18) gaseous products and solid residue (22) from the chamber.
Patent GR-3024734-T3 (GR)
Title: A battery charging system
Inventor: YANG TAI-HER
IPC: H02J7/02
Filed: 1997-09-17
Abstract: This invention relates to a battery charging system in which a rechargeable relay battery is coupled to DC power source and at least one output control device.
Patent GR-3025929-T3 (GR)
Title: Ein isolation and purification of lung surfactant prot
Inventor: BENSON BRADLEY J
IPC: C07K19/00
Filed: 1998-01-15
Abstract: Methods are provided for the isolation and purification of recombinant lung surfactant protein. The methods involve a multistep procedure including extraction with a C1-C4 aliphatic alcohol and chromatographic purification steps which employ a C1-C4 aliphatic alcohol as eluant. Purified proteins obtained using the disclosed isolation and purification steps are provided as well.
Patent GR-3030071-T3 (GR)
Title: A damper for oscillating machines.
Inventor: BELLAZZI EMILIO
IPC: D06F37/20
Filed: 1999-04-27
Abstract: A damper for oscillating machines consisting of a cylindrical external casing (1) on the internal wall of which suitable circumferential gaskets (7,8) are fixed, which are appropriately spaced each other and of a cylindrical piston (9) suitably sliding inside said external cylindrical casing, the latter having on its walls longitudinal slits (3,4), is described. <IMAGE>
Patent HR-P20080499-T3 (HR)
Title: Tetrahydropyridothiophenes
Inventor: PEKARI KLAUS
IPC: A61P35/00
Filed: 2008-10-07
Abstract: Compounds of a certain formula (I), in which Ra and Rb have the meanings indicated in the description, are novel effective compounds with anti-proliferative and/or apoptosis inducing activity.
Patent TR-200401292-T3 (TR)
Inventor: TUSCHL THOMAS
IPC: C12N15/113
Filed: 2001-11-29
Abstract: Double-stranded RNA (dsRNA) induces sequence-specific post-transcriptional gene silencing in many organisms by a process known as RNA interference (RNAi). Using a Drosophila in vitro system, we demonstrate that 19-23 nt short RNA fragments are the sequence-specific mediators of RNAi. The short interfering RNAs (siRNAs) are generated by an RNase III-like processing reaction from long dsRNA. Chemically synthesized siRNA duplexes with overhanging 3' ends mediate efficient target RNA cleavage in the lysate, and the cleavage site is located near the center of the region spanned by the guiding siRNA. Furthermore, we provide evidence that the direction of dsRNA processing determines whether sense or antisense target RNA can be cleaved by the produced siRNP complex.
Patent GR-3035855-T3 (GR)
Title: N-benzylpiperazine derivatives, process for their preparation and pharmaceutical compositions containing them
Inventor: WIERZBICKI MICHEL
IPC: C07D339/04
Filed: 2001-05-11
Abstract: N-benzyl piperazine derivatives of formula (I), their isomers and addition salts with acids and bases are new. R1 = 1-6 C alkyl; X = O or S; R2 = 1-8 C alkyl (optionally substituted by CO2H or 1-6C alkoxycarbonyl), 1-6C alkoxy, phenyl (optionally substituted by halo, 1-6C alkyl or alkoxy, OH or trihalomethyl), 3-7C cycloalkyl (optionally substituted by ≥ 1 phenyl (optionally substituted by ≥ 1 halo or 1-6C alkyl or alkoxy, OH or trihalomethyl)), 4-(2,3-dithiacyclopent-1-yl)-butyl, pyridyl, NH2 (optionally mono- or di-alkylated with 1-6C alkyl), or a chroman or chroman-alkyl group; and R3 = H, 3-7C cycloalkyl, CHO, phenyl (optionally substituted by halo, 1-6C alkyl or alkoxy, OH or trihalomethyl), pyridyl or 1-20 C alkyl (optionally substituted by ≥ 1 halo, phenyl or cycloalkyl (optionally substituted as described above as in R2)), 1-6C alkoxy, OH or pyrrolidinyl.
Patent GR-3036491-T3 (GR)
Title: 3-(Nitrogen substituted)phenyl-5beta-amidomethyloxazolidin-2-ones.
Inventor: BRICKNER STEVEN L
IPC: C07D413/04
Filed: 2001-08-31
Abstract: of formulae (XI) and (XIII), 3-(fused ring substd.)phenyl-5 beta -(amidomethyl)oxazolidin-2-ones of formula (XXI), and 3-(N-substd.)phenyl-5 beta (aminodimethyl)oxazolidin-2-ones of formula (IV), and their salts are new: where in (XI); R1 = e.g. H, 1-12C alkyl (opt. substd. with 1-3 Cl), 3-12C cycloalkyl, 5-12C monosubstd. alkenyl, phenyl furanyl, tetrahydrofuranyl or 2-thiophene etc. 2 of R2, R3, R4 = H and the other = e.g. H, F, Cl, Br, I or 1-6C alkyl etc. R5 = e.g. H, 1-12C alkyl, benzyl, phenethyl, 3-7C cycloalkyl, 2-12C alkenyl contg. 1-3 double bonds, 2-12C alkynyl contg. 1 triple bond, -CHO etc. in (XIII), X1 = Ac, -COOtBn, -COOCH2Ph or -COO(CH2)2SiMe3; R2, R3, R4 = as above; and R6 = I, N3 or NH2; in (XXI), R1 = as above; R2 or R4 = H and the other together with R3 is -(CH2)n3-(CR10-1R10-2)n7 -CO-(CR10-3R10-4)n8-(CH2)n4-, -(CH2)n5-CH=CH-(CH2)n6- or -(CH2)n3-(CR10-1 R10-2)n7-C(:NOR7)-(CR10-3R10-4)n8-(CH2)n4-; n3, n4 = 0-3; n7, n8 = 0 or 1; R10-1, R10-2 = H or 1-3C alkyl or together complete spirocyclopropyl; R10-3, R10-4 = H or 1-3C alkyl or together complete spirocyclopropyl; with the provisos that (1) n7 + n8 = 1 or (b) n7 = 1 and one of R10-1 or R10-2 is not H; n5, n6 = 0-2; n5 + n6 = 1 or 2; R7 = H, 1-4C alkyl, -CH2COOH or -CH2COOR7-1; R7-1 = 1-4C alkyl; R5 or R6 = H and the other is as for R5 in (XI) above; in (IV), R1, R2, R3, R4 = as in (XI); W1 and W2 together = -NR5-N=CR'6-, -NR5-CR''6=N-or -NR5-N=N-; and R5 = as in (XI); R'6 = H or 1-3C alkyl; and R''6 = H, 1-6C alkyl, SH, SMe, Set, SPh, SOMe, SOPh, SO2Me or SO2Ph.
Patent DE-602004008632-T3 (DE)
Inventor: SIMONTACCHI GIANCARLO
IPC: B05C/
Filed: 2004-07-07
Granted: 2012-08-23
Abstract: A device for conveying powders through pipelines comprises at least one pumping device (10) which in turn comprises a pumping chamber (11) connected to a suction inlet (12) through an input valve (14) and to a delivery outlet (13) through an output valve (15). A vacuum source and a pressure source are alternatively connected to the pumping chamber (11). Input and output valves (14, 15) are sleeve valves with soft tube (30) passing through a drive chamber (34) that can be connected upon command to a pressure source or a suction source to cause respectively throttling or opening of the soft tube (30).
Patent DE-69605553-T4 (DE)
Inventor: BONZI RODOLFO
IPC: G06F12/00
Filed: 1996-07-13
Granted: 2002-05-08
Abstract: PCT No. PCT/EP96/03080 Sec. 371 Date May 4, 1998 Sec. 102(e) Date May 4, 1998 PCT Filed Jul. 13, 1996 PCT Pub. No. WO97/04407 PCT Pub. Date Feb. 6, 1997Method and means for porting an existing application (An) using a relational-database with SQL interface toward a hardware platform (HW2) with a reduced software configuration which does not include an SQL relational-database. The invention emulates an SQL database enabling hardware resources saving and providing a subset of functions for: creating SQL tables and defining fields; storing, modifying and deleting data on created tables, with a type check, retrieving such data by using SQL filters. Functions can be subdivided into levels (M1, M2, M3) in order to: convert an SQL statement, coming from an existing user application (An), into a sequence of elementary interface functions (IF1 . . . IFn), use said interface functions to read/write data files (F1 . . . Fn), process output data to be supplied to the requesting user application (An).
Patent DK-0593460-T4 (DK)
Inventor: SANTI DANIEL V
IPC: C07K16/00
Filed: 1991-04-23
Granted: 1999-08-09
Abstract: Method and apparatus for synthesizing biopolymers, such as polypeptides and polynucleotides. The apparatus includes plural reaction vessels in which subunit coupling to biopolymers in a particle suspension is carried out. The vessels are connected to common valving structure for use in mixing the suspension and removing suspension liquid. In one embodiment, a robotic arm in the apparatus is operable to transfer reaction solution to the reaction vessels, and to transfer particle suspensions from the reaction vessels to a mixing vessel and back to the reaction vessels. The method can be used to produce preferably equi-molar amounts of different-sequence biopolymers, such as polypeptides and polynucleotides.
Patent DK-0556034-T4 (DK)
Inventor: SUDO MORIHIRO
IPC: A61M5/24
Filed: 1993-02-10
Granted: 2004-11-15
Abstract: A medical instrument capable of maintaining medicament liquids such as pharmaceuticals, nutriments in high quality and dosing correctly and sanitarily is provided. This medical instrument comprises a material containing a resin formed of a cyclic olefin compound or a bridged polycyclic hydrocarbon compound, as a polymeric component.
Patent DK-0684308-T4 (DK)
Inventor: EHRET ALOYSE
IPC: C12N1/20
Filed: 1994-05-27
Granted: 2004-05-10
Abstract: Prodn. of a coculture of yeast and lactic acid bacteria for direct use in bread making comprises culturing at least one yeast strain and at least one lactic acid bacterium strain simultaneously or sequentially in a medium produced by preparing a dil. aq. mixt. contg. wholemeal wheat flour and/or wheat germ. Completely converting the starch in the mixt. to fermentable sugars by hydrolysis with alpha -amylase and amyloglucosidase, and converting at least part of the gluten in the mixt. to peptides and amino acids by hydrolysis with food-grade proteolytic enzymes. Also claimed is a bread making culture comprising Saccharomyces cerevisiae steineri DSM 9211 and Lactobacillus brevis DSM 9209, Lactobacillus plantarum DSM 9208, Leuconostoc mesenteroides DSM 9207 and/or Pediococcus pentosaceus DSM 9210.
Patent TR-201802518-T4 (TR)
Title: Tarım uygulamalarına yönelik biyoçözünür malç.
Inventor: ALFONSO BIEL BORRAZ
IPC: A01G13/02
Filed: 2014-02-14
Abstract: Çeşitli tarım uygulamalarında kullanılan türde biyoçözünür bir malçtır, EN13432 standardına uygun ve patates nişastası, siyah bir ana karışım ve biyoçözünür geri dönüştürülmüş polimerleri içeren gübrelenebilir iki biyoçözünür polimerin bir karışımından çok-katmanlı ekstrüzyon aracılığıyla yapılması ile karakterize edilir. Sunulan buluş toprağı zenginleştiren gübrelenebilir bir materyal olarak, geleneksel malçlarda gerekli toplama ve temizleme işlerinden kaçınarak, malçın kısa bir sürede kendiliğinden-çözünmesinin başlıca avantajını sağlar.
Patent TR-201816261-T4 (TR)
Title: Sıhhi tesisat çıkış armatürü.
Inventor: MARC TEMPEL
IPC: E03C1/086
Filed: 2015-09-03
Abstract: Buluş, bir sıhhi tesisat çıkış armatürünün su çıkışına monte edilebilen bir dış muhafazası (2) bulunan ve kendisinin dış çevresinde en az bir tutucu çıkıntısı (4) olan bir sıhhi tesisat işlevsel birimi (3) bulunan bir sıhhi tesisat çıkış birimi (1) ile ilgilidir, burada işlevsel birim (3), kendisinin en az bir tutucu çıkıntısı (4) ile dış muhafazanın (2) çıkış alın tarafından, dış muhafazanın (2) iç alanınına yerleştirilebilmektedir ve oradan, basınç uygulanarak, çıkış alın tarafından çıkış alın tarafına sırtı dönük olan istikamete doğru itilebilmektedir.
Patent TR-201910981-T4 (TR)
Title: Asansörler, kaldıraçlar ve benzerleri için kılavuz ve söz konusu kılavuzun imal edilmesine yönelik yöntem.
Inventor: TIZIANO GRANATA
IPC: B66B7/02
Filed: 2012-06-27
Abstract: Asansörler için kılavuz bir taban kısmı, taban kısmının zıt yan uçlarına yerleştirilen iki sınır kenar ve taban kısmından ortaya çıkan merkezi bir çıkıntı içermektedir. Ayrıca kılavuz taban kısmında oluşturulan ve merkezi çıkıntı ile en az bir sınır kenar arasına dahil edilen bir ara parçada taban kısmını hafifletmek için ayarlanan ve aynı zamanda en az bir sınır kenarı yakınında yerleşik uç parçada taban kısmını ağırlaştırmak için ayarlanan en az bir kütle yeniden dağıtım kısmı içermektedir.
Patent DE-10196772-T5 (DE)
Title: System und Verfahren zum Anwenden von Reziprozität für Abwärtsstreckenverbindungs-Interferenzidentifikation
Inventor: MCCAULEY HOUSTON
IPC: H04B17/00
Filed: 2001-10-09
Abstract: Verfahren
zum Identifizieren von Quellen von Downlink-Interferenz unter Zellen in einem Telekommunikationsnetz,
die Schritte umfassend:  zwischen einer gestörten Zelle und einer Vielzahl
von störenden
Zellen, bestimmen der Uplink-Störquelle,
die eine Zelle stört,
unter Verwendung von Korrelationen von Rufereignisaufzeichnung (CER)
und Funkstöraufzeichnung (RDR);
und  Anwenden von Reziprozität
zum Identifizieren von Downlink-Interferenzquellen innerhalb der
Zelle, die Störungen
in anderen Zellen verursachen.
Patent DE-10297228-T5 (DE)
Title: Heizeinrichtung
Inventor: BERGSTROEM DAG
IPC: G02B6/255
Filed: 2002-09-19
Abstract: Heizeinrichtung
mit mindestens einem ersten Heizelement (102) zum Heizen von mindestens einer
Schutzhülse
(105, 602), die um mindestens einen ersten unabgedeckten Abschnitt
einer optischen Faser (501, 603) angeordnet ist.  wobei die
Hülse (105,
602) eingerichtet ist, um zu schrumpfen, wenn sie Wärme ausgesetzt
wird zum Bilden eines Schutzteiles, das den unabgedeckten Abschnitt
einer optischen Faser (501, 603) dicht umschließt,  dadurch gekennzeichnet,
dass mindestens ein erstes Heizelement (102) flexibel ist und angeordnet,
um mindestens einen ersten offenen Zustand anzunehmen und einen
zweiten im wesentlichen geschlossenen Zustand,  dass der erste
offene Zustand geeignet ist zum Einfügen und Entfernen der Schutzhülse (105,
602) und der Faser (601, 603) in die Heizeinrichtung hinein und
aus ihr heraus, und  dass das Heizelement (102) in der zweiten
Stufe im wesentlichen die Hülse
(105, 502) umgibt zum Bilden einer Umschließung um die Hülse (105,
602), so dass das Heizelement Wärme
um im wesentlichen...
Patent DE-10297628-T5 (DE)
Title: Treibeschaltung
Inventor: TOBITA YOUICHI
IPC: H03F3/30
Filed: 2002-11-26
Abstract: Eine
Treibeschaltung, die an einen Ausgangsknoten (N2) ein Potential
(VO) ausgibt, das einem Eingangspotential (VI) entspricht, mit:  einem
ersten Transistor (10), der zwischen eine erste Leistungsversorgungspotentialleitung
(VDD) und den Ausgangsknoten (N2) geschaltet ist;  einem zweiten
Transistor (9), der ein Gate und eine erste Elektrode mit einem
Gate des ersten Transistors (10) verbunden und eine zweite Elektrode
mit einem ersten Knoten (N9) verbunden aufweist;  einem dritten
Transistor (8), der in Reihe mit dem zweiten Transistor (9) zwischen
eine zweite und eine dritte Leistungsversorgungspotentialleitung
(VDD, GND) geschaltet ist; und  einem ersten Differenzverstärker (2)
zum Regulieren eines Gatepotentials des dritten Transistors (8),
so dass ein Potential an dem ersten Knoten (N9) dem Eingangspotential (VI)
angeglichen wird.
Patent DE-10392469-T5 (DE)
Title: Elektrisch leifähige Polymer-Schäume und Elastomere sowie Verfahren zur Herstellung dieser
Inventor: NARAYAN SUJATHA
IPC: C08G101/00
Filed: 2003-04-01
Abstract: Eine
Zusammensetzung enthaltend  einen polymerischen, gummiartigen
Schaum; und  ungefähr
0,0001 bis zu ungefähr
50 Gew.-% Carbon Nanoröhrchen,
wobei die Zusammensetzung ein Leitvermögen von ungefähr 10 –3  Ohmzentimeter
bis zu ungefähr
10 8  Ohmzentimeter hat.
Patent ES-2363083-T5 (ES)
Inventor: MO LI
IPC: H04L12/56
Filed: 2003-08-06
Granted: 2014-03-18
Abstract: The present invention provide a method of automatic protection switching, It is applicable to forward path which is established basing on link-state of routing alternate protocol in domain, It comprises to setup the protection path; When there is a fault in the link in network, It would modify the header information of the forwarding frame; then according to the header information of the forwarded frame, it comes to forward the frame; The frame that shows normal state in the header information of the frame will forward on natural path , and the frame that shows to need protection switching in the header information of the frame will forward according to the protection path. The present invention provide protection switching to forward the frame at a high-speed, which may be protection switched on the detection node immediately, and that sequential data frame would be protected; The data frame may be protected, If only the destination node still be exist; otherwise, the present invention realize protection on millisecond level for the data traffic, the time for protection switching is correspond to the time for detecting the fault, and it need not induct new protocol and modify the present routing alternate protocol.
Patent ES-2070239-T5 (ES)
Inventor: DAFTARY FEREIDOUN
IPC: A61C8/00
Filed: 1990-10-18
Granted: 1999-07-16
Abstract: A system and method is provided for implanting tooth analogues in the jawbone resulting in aesthetically and functionally desirable gingival tissue contours after restoration. The system permits modification and adaptation of the tooth analogue to meet intraoral demands in a manner similar to that used in the preparation and restoration of natural teeth. The system comprises a standard fixture (12) and cover screw passed through opened gingival tissue and implanted in the jawbone. After the ossointegration of the fixture, the gingiva is reopened, the cover screw removed and a healing cap (30) having a predetermined contour, is attached to the fixture. The reopened gingiva re-heals in a shape determined by the contour of the healing cap. The healing cap is then removed and replaced by an abutment (4,6,9) having an emergence profile matching that of the healing cap. An immediate snug fit between the gingival tissues and the abutment is thereby provided at the time of connection of the abutment to the fixture. A crown (2) is removably attached to the abutment by a screw (90) extending through the side of the crown into the abutment. An improved version of the healing cap is a healing cap created in two portions (138,140) so that one portion (138) around which gingiva tissue regrows remains in the patient and only a second upper portion is removed (140), and an improved abutment (204) which is engagable with the portion of the healing cap left in the patient is used for the abutment about which the crown is removably attached.