baber/WOPTO huggingface dataset:
Patent EP-0934911-B1 (EP)
Inventor: LANGELLA FRANCESCO
IPC: C03C17/02
Filed: 1999-01-25
Granted: 2001-11-21
Abstract: A technique for colouring the surface of flat glass, by thermal fixing and concentration, uses a fine layer of paste amalgamated from appropriate colouring and fluxing oxides that are vitrifiable at temperatures close to that for the melting or softening of the glass.   The application of the layer (3) of colouring can be applied by silk screen printing, by applying a coloured voile or by spray varnishing.
Patent EP-1060509-B1 (EP)
Inventor: LEVY MIGUEL
IPC: H01L21/20
Filed: 1999-02-08
Granted: 2005-09-21
Abstract: A method is provided for detaching a single-crystal film from an epilayer/substrate or bulk crystal structure. The method includes the steps of implanting ions into the crystal structure to form a damage layer within the crystal structure at an implantation depth below a top surface of the crystal structure, and chemically etching the damage layer to effect detachment the single-crystal film from the crystal structure. The method of the present invention is especially useful for detaching single-crystal metal oxide films from metal oxide crystal structures.
Patent EP-1049545-B1 (EP)
Inventor: OLSEN DOUGLAS E
IPC: B07C3/08
Filed: 1999-01-21
Granted: 2003-01-02
Abstract: The object of the present invention is to provide a dispatch system and a method therefor which significantly increase throughput. It would additionally be desirable to provide a dispatch system which is capable of handling both trays and tubs of various sizes as well as containers which are uncovered, sleeved, or covered with cardboard. A solution for this object is given by a postal dispatch system (20, 20') which dispatches randomly arranged containers (94) of sorted mail to particular dispatch carts (52) comprising: a sortation conveyor (36, 36') having a main line defined by a conveying surface, a plurality of spurs (44, 44') extending from said mail line and a diverter mechanism at each of said spurs (44, 44') which selectively diverts containers (94) from said conveying surface onto the associated one of said spurs (44, 44'); and at least one transport mechanism (50, 50') which transports containers (94) from each of said spurs (44, 44') to a cart (52) juxtaposed with that spur (44, 44'). Said object is even solved by a method of dispatching randomly ordered containers (94) of sorted mail to carts (52), comprising: sorting containers (94) to particular locations, each associated with a cart (52); and transporting containers (94) between each of said particular locations and the associated cart (52).
Patent EP-1108030-B1 (EP)
Title: Modification de fibres vegetales
Inventor: BURRELL MICHAEL MEYRICK
IPC: C12N5/10
Filed: 1999-08-18
Granted: 2011-04-13
Abstract: L'invention concerne l'isolement et la caractérisation de nouvelles séquences du gène d'expansine à partir d'espèces d'arbres hétérologues et homologues et la réintroduction de ces nouveaux gènes dans des arbres afin de modifier les niveaux d'expansine. Six nouveaux gènes ont été identifiés. L'eucalyptus a aussi été transformé à l'aide de la séquence EX29 du concombre (GenBank, No d'enregistrement U30382-connu sous l'appellation Cs-EXP1). Un changement de la hauteur de la plante et de la longueur internodale a été observé comparé à des plantes témoins.
Patent EP-1103170-B1 (EP)
Inventor: KOSTELNIK JAN
IPC: H05K1/02
Filed: 1999-08-03
Granted: 2002-05-29
Abstract: The invention relates to a method for mounting a heatsink on a printed circuit board. According to the inventive method, a frame is initially positioned on a printed circuit board, a metal element is then inserted into the frame on top of an intermediate layer of adhesive and the printed circuit board is pressed. The frame stops the adhesive from spreading beyond the area defined by said frame.
Patent EP-1115996-B1 (EP)
Inventor: MENZEL STANLEY WILLIAM OTTO
IPC: B29C63/32
Filed: 1999-09-22
Granted: 2004-06-23
Abstract: A machine (200) for winding a strip of material (212) into a helical pipe wherein adjacent convolutions of the strip (212) are interlocked. The machine comprises: a frame (220) having circumferentially spaced supports in the form of rollers (266, 276, 278, 286, 288, 296 and 298) adapted to bear against the inner periphery of the pipe being wound, the outer peripheral surfaces of the rollers forming a helical path for the strip (212) and along which the strip (212) is directed when the machine (200) is in use; driving rollers (224) mounted to the frame (220) for driving the strip (212) around the outside of the rollers so as to follow the helical path and cause the adjacent edges the strip (212) to interlock; and drive means (226) mounted to the frame for driving the driving rollers (224). The driving rollers (224) and the drive means are located wholly inside of the path formed by the rollers and no part of the machine (200) engages the outer periphery of the pipe being wound.
Patent EP-1131499-B1 (EP)
Inventor: SCHAEFF HANS
IPC: E02F3/34
Filed: 1999-10-02
Granted: 2003-05-07
Abstract: L'invention concerne une chargeuse pelleteuse mobile comprenant un bras (3) pouvant pivoter autour d'un axe (4) et un godet chargeur (13) pouvant être actionné au moyen d'une tringlerie de basculement (11, 12). Selon l'invention, au moins un bras supplémentaire (7) reliant le bras (3) et le godet chargeur (13) est articulé de façon à pouvoir se déplacer, sur le bras (3), à la manière d'un parallélogramme au moyen d'au moins une première bielle (8) et d'au moins une deuxième bielle (9). Cette chargeuse pelleteuse présente des moyens pour commander le déplacement du bras supplémentaire (7) en fonction de la position angulaire du bras (3) par rapport à son axe de pivotement (4) ainsi que des moyens pour maintenir le godet chargeur (13) à l'horizontale.
Patent EP-1150928-B1 (EP)
Inventor: AOMINE NOBUTAKA
IPC: C03C17/36
Filed: 1999-12-15
Granted: 2004-09-15
Abstract: A glazing panel carrying a coating stack comprises in sequence at least:a glass substratea base antireflective layeran infra-red reflecting layer, anda top antireflective layerin which at least one of the antireflective layers comprises at least one mixed nitride layer which is a mixture of Al and at least one additional material X, in which the atomic ratio X/Al is greater than or equal to 0.05 and in which X is one or more of the materials selected from the group comprising the elements of Groups 3a, 4a, 5a, 4b, 5b, 6b, 7b, 8 of the periodic table. The glazing panel is particularly suitable for heat treatment and incorporation in windscreens.
Patent IE-87145-B1 (IE)
Title: An apparatus for processing a vehicle tyre
Inventor: STEPHEN MURPHY
IPC: B29B17/04
Filed: 2017-02-24
Abstract: An apparatus for processing a vehicle tyre by cutting the tyre into portions, the apparatus comprising a base having a cutting blade mounted thereon for cutting a sidewall of a tyre, a cantilevered tyre support mast pivotally mounted on the base to be movable between a lowered position, wherein a tyre may be located over the tyre support mast, and a raised position, wherein the tyre support mast supports the tyre against the cutting blade during a cutting operation, the tyre support mast including an abutment member arraned to be located inside of the tyre when the tyre support mast is in its raised position and having a reciving slot adapted to receive a portion of the cutting blade when the tyre support mast is in its raised position, a pair of tyre support members being mounted on the tyre support mast, said support members being laterally spaced on either side of said abutment member, said tyre support members being adapted to engage an inner surface of the tyre such that the tyre rests upon the support members when the tyre support mast is in its raised position, wherein at least one drive wheel is mounted adjacent the cutting blade for rotating the tyre during a cutting operation, said at least one drive wheel engaging the abutment member of the tyre support mast when the tyre support mast is in its raised position. <Figure 2>
Patent IT-1294471-B1 (IT)
Inventor: MALIZIA MARIO
IPC: F16M11/38
Filed: 1997-06-06
Granted: 1999-04-12
Abstract: This invention concerns a coupling for connecting two rods (A,B), said coupling being characterised by a cylindrical hollow body (1) closed at one end with a jaw-shaped bottom wall (2) and a clamp consisting of two jaws (5) housed and sliding in a sleeve (3) placed in a off-centre and slanted position with respect to said body. <IMAGE>
Patent IT-1264418-B1 (IT)
Inventor: DE FERRA LORENZO
IPC: B01D61/44
Filed: 1993-05-11
Granted: 1996-09-23
Abstract: A process for the fractionation of deacylated glycerophospholipids of formula (I) <CHEM> wherein R and X are as defined in the specification, comprising the electrodialysis in electrolytic cells of aqueous or hydroalcoholic mixtures, having two or more components, of said deacylated glycerophospholipids and of possible impurities of a non-glycerophospholipidic kind.
Patent IT-1298543-B1 (IT)
Inventor: PAPPA ROSARIO
IPC: B09C1/02
Filed: 1998-02-04
Granted: 2000-01-12
Abstract: The invention relates to a process for the treatment of argillaceous soil, with a high quantity of water, polluted by organic substances by means of the use of ethyl acetate as exctracting agent.
Patent IT-1302695-B1 (IT)
Inventor: RIZZI MARIO
IPC: A23G3/20
Filed: 1998-10-19
Granted: 2000-09-29
Abstract: The invention relates to a chain mold for making soft-centred sweets, comprising a first supporting construction which supports horizontal-parallel rotary axis shafts, each shaft supporting a plurality of gear wheels respectively meshing with a first top chain and a bottom chain, and where the first bottom chain is provided with bottom half-molds adapted to engage with corresponding top half-molds of the top chain for forming the soft-centred sweets starting from a food product rib supplied in parallel with the chains. The main feature of the invention is that the mold further comprises a second supporting construction, provided with a pair of shoulders supporting a shaft and an axis substantially parallel to one another and thereon a second top chain is engaged, said second top chain being provided with dihedral constructions which are so contoured as to provide, for each sweet, the soft filling holding volume. <IMAGE>
Patent IT-1279349-B1 (IT)
Title: Piston articulation device for volumetric machines with curved liners - has sliding or oscillating elements in direction which is tangential to instantaneous trajectory of piston
Inventor: PECORARI FELICE
IPC: F16J/
Filed: 1995-01-19
Granted: 1997-12-09
Abstract: The volumetric machine with curved liners has the piston seal ring (12) positioned outside the plane of rotation of the pistons (B) but in a plane oriented at the centre of intersection of the rotational axes of the pistons and liner blocks. A sliding element (10) coupled to oscillate on a surface (9) of the drive shaft (2) can slide on the plane (C) tangential to the instantaneous trajectory of the piston. Elements in radial contact between the piston (1) and relative support device compensate for the centrifugal forces acting on the mass of the piston.
Patent IT-1311319-B1 (IT)
Inventor: PIPINO MARCO
IPC: G01N21/90
Filed: 1999-12-16
Granted: 2002-03-12
Abstract: Apparatus for non-destructive X-ray inspection of cylindrical containers (13) for liquid products, comprising means (10) for transferring said cylindrical containers along a substantially rectilinear direction, whereby said containers (13) are made to take an inclined position about the advance direction when said containers (13) are being conveyed through the X-ray unit.
Patent JP-3051839-B1 (JP)
Title: 伸縮及び可撓性絶縁管継手
IPC: F16L19/08
Filed: 1999-04-16
Granted: 2000-06-12
Abstract: 【要約】
【課題】  地中に埋設される伸縮および可撓性絶縁管継 手において、ステンレス鋼管が引っ張られるときに起こ る袋ナットの脹らみによる袋ナットのねじのゆるみを防 止することと、ねじの締めつけすぎによるねじの捻じ切 れを防止することである。
【解決手段】  継手本体(110) の他端の雄ねじ(111) に 隣接して周方向に延びる第一の環状フランジ(122) を設 け、さらに第一の環状フランジに対向する位置に周方向 に延びる第二の環状フランジ(124) を設け、袋ナット(1 14) を継手本体(110) にねじこんで締めつけて対向する フランジを合わせることにより解決される。
Patent JP-2894685-B1 (JP)
Title: 回転移動玩具
IPC: A63H33/00
Filed: 1998-05-15
Granted: 1999-05-24
Abstract: 【要約】
【課題】  磁石によった動きのものとは容認し難いよう な自然で且つスムーズな回転動作、更には自転走行動作 を得ることができるようにする。
【解決手段】  下面を球面形とした中空球状もしくは中 空半球状の玩具体１を設け、該玩具体１の内底部にＮ極 もしくはＳ極の何れか一方極が上方に向くように従動側 磁石２を固着配置する。一方、従動側磁石２の上向きの 一方極と同極側を上向きにして互いに反発作用状態とす るかもしくは従動側磁石２の上向きの一方極と異極側を 上向きにして互いに吸引作用状態とするかして離隔配置 し、従動側磁石２に対し水平回転方向にトルクτを発生 させるための従動側磁石２の操作用の原動側磁石５を形 成する。玩具体１は、低摩擦係数を有する硬質合成樹脂 材料により形成し、動物、人形、キャラクター等の種々 の意匠的形態部４を着脱交換可能となるように搭載す る。また、原動側磁石５は、動物、人形、キャラクター 等の透磁性を有する操作体６で包被する。
Patent JP-2957996-B1 (JP)
Title: インピーダンスボンド
IPC: B61L1/18
Filed: 1998-07-02
Granted: 1999-10-06
Abstract: 【要約】
【課題】  補償用リアクトルや共振コンデンサが不要 で、踏切制御子と共振を生じても、補償用リアクトルや 共振コンデンサを挿入して１次インピーダンスを上げる 方法と同等以上の効果を有するインピーダンスボンドを 提供する。
【解決手段】  インピーダンスボンド１０１の３次コイ ル３Ａを、導線３２ａ等が同一方向に巻かれ環状に形成 された４個の巻線ブロック３０ａ〜３０ｄに分割して巻 き、間隙保持部材３１ａ〜３１ｃによって互いに所定間 隙ｄが配されるようにして直列に接続し、全体として筒 状に構成した。
Patent JP-3002878-B1 (JP)
Title: 発泡合成樹脂成形容器
IPC: B65D43/20
Filed: 1998-09-30
Granted: 2000-01-24
Abstract: 【要約】
【課題】  冷気流通による予冷効果を高め、冷凍効率を 向上せしめると共に、内容物の視認をも容易ならしめ る。
【解決手段】  底面と、該底面外周より起ち上がる側壁 とを有し、上面が開口された四角形状の発泡合成樹脂容 器本体１と、該容器本体の前記上面開口部を蓋止する四 角形状の蓋部材２によって構成し、容器本体１の対向す る一方の両側壁上面と、該上面に対応する蓋部材の対向 面には互いに嵌着可能な係止部５、６、７、８を設ける と共に、容器本体の対向する他方の両側壁と該側壁に対 応する蓋部材の両側には互いに摺動可能な構造３、４を 施した。
Patent MD-4020-B1 (MD)
Inventor: RASSOHIN ION
IPC: F16D3/04
Filed: 2008-05-20
Abstract: Inventia se refera la industria constructiilor de masini si poate fi utilizata pentru imbinarea dintre arbori si transmiterea  momentului de torsiune de la un mecanism la altul. Cuplajul compensator contine doua semicuplaje (1, 14) unite intre ele prin tije (17). Pe un semicuplaj (14) capetele plate (18) ale tijelor (17) sunt montate articulat intre placi de etansare din cauciuc amplasate de ambele parti ale unor suporturi. Celalalt semicuplaj (1) contine doua flanse, una din ele fiind demontabila, intre care sunt amplasate bucse (5, 6) in perechi, fiecare avand guler (7, 8) si suprafata interioara sferica. Intre bucsele (5, 6) in perechi este montata o bucsa (10) cu suprafata exterioara sferica, in care este amplasat capatul opus al tijei (17).
Patent MD-3980-B1 (MD)
Title: Process for palladium extraction from used catalysts
Inventor: COVALIOV VICTOR
IPC: B01D15/04
Filed: 2009-02-09
Abstract: The invention relates to processes for precious metal extraction from used parts, particularly to processes for palladium extraction from used catalysts.The process, according to the invention, includes milling of catalysts up to the particle dimension of 0.5...1.0 mm, with subsequent annealing of the charred fuel rests, the selective electrochemical extraction of palladium in the fresh solution of oxygenated chloric acid obtained by electrolysis of the 3...5% aqueous solution of sodium chloride at an anodic current density of 1...2 A/dm2 and a pH of 2.0...3.5, with addition of the hydrochloric acid, as well as of the potassium bichromate in a quantity of 1...3 g/L. As anode with a high voltage of oxygen evolution are used electrodes of titanium plated with ruthenium dioxide or of reinforced graphite, and extraction of palladium ions is carried out with subsequent adsorption on a cationite and washing with 5...7% solution of hydrochloric acid.The used solution after extraction is used for the repeated obtaining of the fresh solution of oxygenated chloric acids according to the claimed process.
Patent NO-326711-B1 (NO)
Inventor: MÜLDERS HERBERT
IPC: A21C7/01
Filed: 2000-12-01
Abstract: A rolling assembly converts dough into an elongated round supply for e.g. French bread. The roller (6) has a lower frame (8) over which moves a lower belt (10). The base frame has an upper support frame (17) with a swivel frame (23) and upper belt (22), and a dough bed swing-press (39) with overlapping action. The support frame (17) is height-adjustable with respect to the bottom frame using a cam. The swing frame (23) and upper belt (22) has a weight-compensating gas spring (28). The pressure bed (39) is weight compensated by a gas spring (41). The gas springs (28, 41) pivot on the support frame (17). The swing frame (23), upper belt (22) and pressure bed unit (39) can be locked in the work position. The lifting gear may be operated by pneumatic, hydraulic or electrical action. The arrangement allows for use of either the upper roller or the pressure bed as required.
Patent NO-321814-B1 (NO)
Inventor: MOLLER TORE
IPC: E04B1/84
Filed: 2002-07-29
Abstract: Connection device for bringing about connection and sound insulation between two essentially panel-shaped elements (9, 10), which connection device (1) comprises at least two receiving members (3, 5), between which at least one connecting means (19) is arranged in order to make possible displacement of the elements (9, 10) relative to one another. The connecting means (19) consists of at least one bearing body (21), the bearing body (21) interacting with the receiving members (3, 5) in order to bring about the displacement, and at least one of the receiving members (3, 5) comprises a receiving surface (17).
Patent NO-319961-B1 (NO)
Inventor: SANDAKER KJELL
IPC: H01M8/00
Filed: 2003-04-15
Abstract: The present invention comprises a system for use of fuel cells in stationary/mobile devices with a stable/unstable load profile, having: a fuel cell; a buffer for storage of surplus energy arranged to function as a regulating system between the fuel cell and energy consumption unit; a dumping device for dumping of energy when the buffer is full or according to need; an energy generator/converter for transforming energy when required to another form of energy, at larger energy demand than the fuel cell can meet, or for transforming of energy which is not used and which shall be stored in another form, or for transforming of energy which is stored in the buffer which shall be dumped in another form; and a procedure for use thereof.
Patent NO-333842-B1 (NO)
Title: Fremgangsmåte for å konstruere en modell av et heterogent medium beskrevet av flere parametere fra data uttrykt i forskjellige tidsskalaer.
Inventor: TONELLOT THIERRY
IPC: G01V1/28
Filed: 2005-07-29
Abstract: En fremgangsmåte for å frembringe en modell som representerer et heterogent medium, slik som et underjordisk område, og som er beskrevet ved flere parametere eller fysiske størrelser (slik som de underjordiske impedanser i sammenheng med bølger av P-type eller S-type, densitet, etc.) ut i fra data uttrykt i forskjellige tidsskalaer (slik som flerkomponents seismiske data forut for stakking). - Et første trinn består i å estimere i rekkefølge og ut i fra data uttrykt i hver sin forskjellige tidsskala, parametere eller fysiske størrelser for modellen og da beskrevet for hver forskjellig tidsskala. I et andre trinn blir en skalafaktor, som gjør det mulig å omforme en modell beskrevet i en viss tidsskala til en modell beskrevet i en annen tidsskala bestemt. Denne bestemmelse utføres ved å minimalisere ulikheten mellom en parameter (som kan være en fysisk størrelse eller en kombinasjon av fysiske størrelser) som er anslått i en viss tidsskala og denne parameter anslått i den andre tidsskala. Endelig tilsvarer et fredje trinn estimering av en enkel modell (uttrykt i en enkelt tidsskala), ved å ha samtidig betraktning vedkommende data uttrykt i de forskjellige tidsskalaer, samt bruk av den tidsskala som er fiinnet i trinn 2 for tidsskalaomformingene. - Det kan f.eks. anvendes for å karakterisere hydrokarbonreservoarer.
Patent NO-325123-B1 (NO)
Title: Framgangsmate for konvertering av panteverdien av innlevert tomgods til betalingsmiddel hos en tjeneste- og/eller vareleverandor samt apparat for anvendelse ved utovelse av framgangsmaten
Inventor: ERITZLAND RUNE
IPC: G07F7/06
Filed: 2006-02-27
Abstract: Framgangsmåte for konvertering av panteverdien av innlevert tomgods (2) til et betalingsmiddel hos en tjeneste- og/eller vareleverandør (8), eventuelt registrert på en spesifikk kunde (1), idet framgangsmåten omfatter følgende trinn: a) registrering av verdien av det innleverte tomgodset (2) i en database; b) utvelgelse av en vare eller tjeneste fra en leverandør (8) som er tilknyttet databasen (7); c) overføring av den registrerte verdien til en kundekonto hos leverandøren (8), og d) utlevering av den utvalgte varen eller tjenesten (Cl, C2). Oppfinnelsen vedrører også et apparat (5) til anvendelse ved utøvelse av framgangsmåten.
Patent NO-336658-B1 (NO)
Title: Preparat for synliggjøring av pankreas og fremgangsmåte for synliggjøring av en pattedyrpankreas ved administrering av preparatet
Inventor: YU DONG-FANG
IPC: A61P3/10
Filed: 2006-04-11
Abstract: Preparater til synliggjøring av betaceller som omfatter chelator-antidiabetiske middelkonjugater og eventuelt chelaterte metaller.
Patent NO-339266-B1 (NO)
Inventor: PERVAN DARKO
IPC: B05C1/08
Filed: 2007-04-04
Abstract: A method for coating surface portions of a board material with a liquid material. The method uses a wheel (2) which transfers the coating material and compressed air which positions the coating material. The invention relates to a method for surface coating a floorboard (1).
Patent NO-341716-B1 (NO)
Inventor: WANGH LAWRENCE J
IPC: C12Q1/68
Filed: 2007-05-15
Abstract: An additive for preventing mispriming in polymerase chain reaction (PCR) amplifications and assays comprising a hairpin oligonucleotide having a stem duplex greater than six nucleotides in length and a stabilized stem terminus. The additive improves PCR amplifications, including LATE-PCR amplifications when added to initial amplification reaction mixtures. It can be included in oligonucleotide sets and in kits for PCR amplification and assays.
Patent NO-338161-B1 (NO)
Inventor: WEISS FRANK
IPC: H01C13/00
Filed: 2008-03-14
Abstract: The input conductor track connects with a resistance layer (10) that is coupled to the earthing conductor (14). These are formed on a substrate (16). The earthing contact (22) is formed at the end and is part of a housing that provides efficient heat transfer.
Patent PL-150888-B1 (PL)
Title: Polycyclic compounds, their preparation and formulations containing them.
IPC: C07D521/00
Filed: 1985-11-14
Abstract: The present invention provides a compound of the formula (I):  ArCH2NR<1>      (I) or a monomethyl or monoethyl ether thereof, the compound of formula (I) including the said ethers containing no more than 29 carbon atoms in total; an ester thereof; a salt thereof; wherein Ar is a 6,6,6,5 tetracyclic aromatic ring system having 15 to 17 ring atoms, the five membered ring containing one heteroatom, optionally substituted by one or two substituents, said substituents containing not more than four carbon atoms in total when taken together and being the same of different and are selected from halogen; cyano; C1-4 alkyl or C1-4 alkoxy, each optionally substituted by hydroxy or C1-2 alkoxy; halogen substituted C1-2 alkyl or C1-2 alkoxy; a group (S(O)nR<2> wherein n is an integer 0, 1 or 2 and R<2> is C1-2 alkyl optionally substituted by hydroxy or C1-2 alkoxy; or Ar is optionally substituted by a group NR<3>R<4> containing not more than 5 carbon atoms wherein R<3> and R<4> are the same or different and each is a C1-3 alkyl group or NR<3>R<4> forms a five- or six-membered heterocyclic ring optionally containing one or two additional heteroatoms;  R<1> contains not more than eight carbon atoms and is a group <CHEM>  wherein m is 0 or 1; R<5> and R<6> are the same or different and each is hydrogen or C1-5 alkyl optionally substituted by hydroxy; R<7> and R<8> are the same or different and each is hydrogen or C1-3 alkyl;  C-C is a five-or-six-membered saturated carbocyclic ring;  R<9> is hydrogen, methyl or hydroxymethyl; R<1><0>, R<1><1> and R<1><2> are the same or different and each is hydrogen or methyl;  R<1><3> is hydrogen, methyl, hydroxy or hydroxymethyl. Also provided are methods for the preparation of the compounds of formula (I), intermediates in their preparations and pharmaceutical formulations containing them. The compounds of the formula (I) are useful in the treatment of tumours.