baber/WOPTO huggingface dataset:
Patent EP-1101170-B1 (EP)
Inventor: KLOSA KLAUS
IPC: G06F13/40
Filed: 1999-08-05
Granted: 2002-05-08
Abstract: The interface circuit uses only one store (FiFo), for several bus or processor word lengths or bytes. The store is arranged between the serial interface and the processor (CPU). The FiFo store can be written word-wise bit-wise, and can be written to or read from. The store specifically comprises a write pointer and a read pointer, which can separately address each bit or word, or byte). The processor operates via a current saving mode, or sleep mode, with minimum current demand.
Patent EP-1102614-B1 (EP)
Inventor: STREICH ULI
IPC: B64C27/82
Filed: 1999-07-21
Granted: 2002-09-04
Abstract: A model helicopter includes a body and an engine mounted in the body. A rotor is connected to the engine through a substantially vertical primary shaft. A radial fan cools the engine while a lateral opening is provided on a tail boom connected to the body. Air is sucked in from outside of the body by a radial fan in the body, with the air flowing through the lateral opening and being directed to the tail boom through a channel. This air imparts a torque on the body that counter-acts the torque transmitted by the drive for the rotor on the body. The radial fan includes two impellers, which are coaxially mounted on the primary shaft. The air displaced by the second impeller flows through the engine, while flowing through the body, and dissipating the heat from the engine. A separation wall is provided between the two impellers of the radial fan.
Patent EP-1133761-B1 (EP)
Inventor: RAWLINS MARK WAYNE
IPC: G07F11/32
Filed: 1999-11-22
Granted: 2003-05-28
Abstract: A cigar vending machine for selectively dispensing cigars of varying sizes on selection by a user includes a plurality of cigar storage and dispensing containers each of which includes a base plate having an extension portion extending in a first direction, a restraining plate having an edge oriented in the first direction, the restraining plate in spaced, substantially parallel relationship with the base plate, the extension portion extending substantially in the first direction beyond the edge of the restraining plate. An adjuster is provided to adjust the distance between the base plate and restraining plate to conform to the diameter of cigars located between the base plate and restraining plate and an adjustable stop communicates with the extension for preventing movement of the cigars located between the base plate and restraining plate in the first direction, the stop adjustable along the plane of the base plate to change the distance between the stop and an edge plane perpendicular with the base plate and adjacent the edge of the restraining plate, to conform to the diameter of the cigar to be located adjacent the stop. A cigar dispenser moves the selected cigar adjacent the stop, past the stop upon activation by an activator to dispense the selected cigar, upon a selector receiving an input from a user to identify the selected cigar from one of the plurality of containers.
Patent EP-1131278-B1 (EP)
Inventor: COCKREM MICHAEL CHARLES
IPC: C07B61/00
Filed: 1999-11-16
Granted: 2006-02-22
Abstract: A process for producing an ester comprises the steps of: (a) feeding to a first vessel a feed that comprises organic acid, alcohol, and water, whereby organic acid and alcohol react to form monomeric ester and water, and whereby a first liquid effluent is produced that comprises as its components at least some ester, alcohol, and water, the components of the first liquid effluent being substantially in reaction equilibrium; and (b) feeding the first liquid effluent to a second vessel, whereby a vapor product stream and a second liquid effluent stream are produced, the vapor stream comprising ester, alcohol, and water, wherein the second vessel is maintained substantially at vapor-liquid equilibrium but not substantially at reaction equilibrium.
Patent EP-1131886-B1 (EP)
Inventor: KIRN LARRY J
IPC: H03F3/217
Filed: 1999-11-12
Granted: 2007-04-04
Abstract: A switching amplifier employs a plurality of independent output stages in a bridged configuration, with each output stage presenting the product of an independent duty cycle and two or more static of dynamic reference voltages, currents or powers to a single terminal of a common output load. A plurality of electrically controlled switches (207, 208, 209, 210, 211, 212) interconnect the references to the load (218), with a waveform generator (220) controlling the switches for a coarse and fine control of power to the load. The waveform generator preferably uses pulse-code modulation (PCM), though the invention is not limited in this regard, and is applicable to any modulation scheme or waveform suitable to sequence the electrically controlled switches. The load is preferably filtered on either side, and return paths for the power supplies (i.e., ground) are connected through separate switches to the load through the filters (213, 214, 215, 216, 217). The amplifier may be used for audio or other applications benefitting from the design.
Patent EP-1141801-B1 (EP)
Inventor: OH HILARIO
IPC: H01L21/68
Filed: 1999-12-01
Granted: 2005-08-17
Abstract: A wafer cluster tool comprising a series of processes has a scheduler which synchronizes all events in the system. Events in the cluster tool are scheduled to occur at regular, periodic intervals, thereby improving throughput and quality. The scheduler also eliminates conflicts for transportation resources between modules in the cluster tool. Wafers are loaded into the cluster tool at a regular interval, referred to as a sending period. All events in the system are synchronized with the sending period, and all event timings are normalized in terms of the sending period. The conflicts are resolved by selectively adding delays in modules which can tolerate them without degrading throughput or performance in the system; modules that cannot tolerate delays are exempted. The periodicity of the scheduled cluster tool enables the identification of wafers in the cluster tool. The identification of the order in which a wafer was loaded also identifies a module path followed by the wafer.
Patent EP-1121541-B1 (EP)
Inventor: MYERS JAMES R
IPC: F16F9/04
Filed: 1999-09-20
Granted: 2008-04-02
Abstract: An air spring having a flexible sleeve is mounted between a pair of movable support components to maintain the components in a spaced relationship. The flexible sleeve has a hollow interior which forms an internal fluid chamber. A connector is mounted in one end of the sleeve and receives a tube for controlling the flow of fluid into and out of the chamber. The connector has a main body molded into the sleeve end and a collet member telescopically rotatably mounted in a hollow interior of the main body. The collet member has a plurality of flexible fingers which grip the end of a tube when inserted therein and have one-way barbs which grip to tube to prevent it from being pulled out once it is inserted within the connector. An elastomeric seal is mounted within the body to provide a fluid seal between the tube and body interior.
Patent IE-86160-B1 (IE)
Title: Surgical fastener for attaching a hernial prosthesis
IPC: A61B17/04
Filed: 2009-04-03
Abstract: The present invention relates to a surgical fastener (600) for attaching a prosthesis (200) intended to repair a hernial defect (100) of the abdominal wall (101), said prosthesis (200) comprising at least two layers (201, 202) made of a biocompatible flexible material joined together at at least one assembly zone (205), so as to define an internal space (203) delimited by a substantally circular peripheral contour (206). Said internal space is accessible to said surgical fastener (600) that comprises at least one body forming a reinforcing section comprising an open ring (601) intended to extend substantially along at least one part of said substantially circular substantially circular peripheral contour (206) and said open ring (601) is connected to an attachment arm (604) that extends substantially radially towards the inside and is intended to be anchored in the abdominal wall (101). <Figure 7>
Patent IT-1309336-B1 (IT)
Inventor: BARANI STEFANO
IPC: B62D55/21
Filed: 1999-07-14
Granted: 2002-01-22
Abstract: A chain for forming tracks, composed of a plurality of links articulated about axes perpendicular to a longitudinal extension of the chain, each link being composed of two plates (3, 4) having two spaced ends and two closer ends, the ends forming collars (5, 8) supported on articulation pivots (13) so that the closer ends of one link form collars (7, 8) which lie internally with respect to the spaced ends of an adjacent link that are supported on the same pivot, the inner collars (7, 8) being fitted on a sleeve (21) supported on the pivot and arranged between the spaced ends, further comprising a bushing (24) which is supported on the sleeve (21) between the closer ends.  <IMAGE>
Patent IT-1298514-B1 (IT)
Inventor: ALLEGRI CESARE
IPC: F16L33/207
Filed: 1998-01-30
Granted: 2000-01-12
Abstract: A connection for high pressure flexible pipes comprises a metallic pipe fitting (11), a free end of a flexible pipe (12) and a metallic sleeve (13), wherein a portion of the end (15), with a dimensionally reduced diameter, of said pipe fitting (11) is inserted into a free end of said flexible pipe (12) and said sleeve (13) is pressed on both the pipe and the fitting so that it clamps them together by deformation. Said pipe fitting (11) comprises an annular cylindrical seat (16) below a radial annular surface (27) at the end of a higher diameter head (14) and a series of annular grooves (19) in a reduced diameter end portion (15) and said sleeve (13) has a cylindrical portion with an inner thread (20) connected to a portion of a cylindrical head (21) which ends with an inwardly directed flange (22), which defines a housing (23) to lock together said pipe and said pipe fitting, said flange (22) can be aligned to said cylindrical annular seat (16) of said pipe fitting (11). <IMAGE>
Patent IT-1313624-B1 (IT)
Inventor: BELLANI PIETRO
IPC: C07B61/00
Filed: 1999-09-21
Granted: 2002-09-09
Abstract: A process is described which permits the preparation of Ritonavir with only five intermediate stages using the same starting materials as those used in the process described in WO 94/14436; the process described here is also particularly satisfactory from the point of view of environmental impact because nearly all of the carbon atoms used are subsequently incorporated in the final molecule. Finally, the improvement afforded by this novel process is linked with the fact that an inexpensive reagent, such as bis-trichloromethyl carbonate (BTC), is used in two of the five stages.
Patent IT-1279118-B1 (IT)
Title: Structure for the temporary support of a length of railway line in operation while excavating beneath the line and procedure for its installation
Inventor: CHIAVES CARLO
IPC: E01B/
Filed: 1995-02-28
Granted: 1997-12-04
Abstract: A structure for the temporary support of a length of railway line which is in operation during excavation beneath the line, comprising a pair of longitudinal main beams 9 associated with each of the tracks 3 of the line 1, located alongside each track 3, which extend over a length greater than the size of the excavation. A plurality of secondary transverse beams 11, 11a for supporting both the rails 5 of each track 3 are connected at the opposite ends to a corresponding pair of main beams 9. Main beams 9 in a given pair are connected by means of connecting members 22 which are capable of holding them close together with secondary beams 11, 11a in between. Main beams 9 are continuous beams and the structure comprises support means 45, 66, 68; 45, 66a, 68, 68a located at the opposite ends of each main beam 9 and adjacent to the sides of the excavation which are capable of distributing a substantial part of the horizontal and vertical loads to which the supporting structure is subjected along each of the sides of the excavation in such a way that this performs the structural function of an arch. <IMAGE>
Patent IT-1311233-B1 (IT)
Inventor: MAULE ROBERTO
IPC: F02D41/24
Filed: 1999-10-15
Granted: 2002-03-04
Abstract: An electronic diesel engine (3) control system (6, EDC) of a vehicle is provided with three different engine maps (MPu, MPc, Mpa) that can be selected as alternatives and are each adapted to a particular driving requirement of the vehicle. The maps are selected in a fully automatic way by monitoring the speed of the vehicle and the actuation of the brakes. <IMAGE>
Patent IT-1310522-B1 (IT)
Title: Control method for refrigeration conditions comprises showcase with a glass panel and rear hinged top and heating filaments governed by the control unit with cooling assembly measuring the temperature values
Inventor: ROSSI ROMOLO
IPC: F25D/
Filed: 1999-01-15
Granted: 2002-02-18
Abstract: The control method comprises refrigerated showcase (10) with glass panel (11) and rear hinged top (12) that can be opened. A cooling circuit is attached with evaporator unit, compressor and condenser unit. Heating filaments (32) are governed by a control unit, while a light detector (38) is installed on the same plane on which the tray (39) lies to detect the actual quantity of ice cream present. A cooling assembly (40) is provided to measure the values of temperature of the air entering and leaving the evaporator unit. An independent claim is also included for a device to control refrigeration.
Patent IT-1265994-B1 (IT)
Title: Sensore universale per la acquisizione di immagini in radiologia  dentale
Inventor: SORDINA GIUSEPPE
IPC: A61C/
Filed: 1993-02-01
Granted: 1996-12-16
Abstract: Sensore universale per l'acquisizione di immagini in radiologia dentale, caratterizzato dal fatto di comprendere:- un contenitore (2) avente dimensioni idonee alla sua introduzione nel cavo orale di un paziente ed avente una parete (4) radiotrasparente,- uno strato di terre rare (6) applicato a detta parete radiotrasparente (4) all'interno di detto contenitore (2), e formante uno schermo nel quale si forma un'immagine radiologica reale,- un sistema ottico costituito da un fascio convergente di fibre ottiche (8) ricurve alloggiate entro detto contenitore ed aventi la terminazione di ingresso affacciata a detta parete radiotrasparente (4) e la terminazione di uscita disposta su una superficie angolata rispetto a detta parete radiotrasparente, e - un connettore (10) per l'accoppiamento a mezzi (12, 20) di acquisizione dell'immagine ridotta formatasi su detta superficie e corrispondente all'immagine radiologica formatasi su detto schermo (6).
Patent JP-2978473-B1 (JP)
Title: 曲り材の自動曲り挽き方法及び装置
IPC: B27B13/00
Filed: 1998-05-21
Granted: 1999-11-15
Abstract: 【要約】
【課題】  曲り材を送材車により直線移送して、移送中 に湾曲する挽面の鋸挽きされる部分が常に鋸刃先へ位置 付けされるように姿勢修正し、曲り材の自動的な曲り挽 きを可能する。
【解決手段】  送材車２付き帯鋸盤１を利用して曲り材 ７を自動的に曲り挽きする方法であって、送材車２の木 掴６に把持させた曲り材７を、木掴６の移動調整により 湾曲する挽面の鋸挽きされる部分が常に帯鋸３の刃先へ 位置付けされるように姿勢修正し、送材車２により直線 移送される曲り材７を挽面７ａが湾曲するように曲り挽 きする。
Patent JP-2926588-B1 (JP)
Title: 防水筐体構造
IPC: H05K5/02
Filed: 1998-08-14
Granted: 1999-07-28
Abstract: 【要約】
【課題】  蓋体の開閉に際して、その作業性を改善し、 筐体に対する蓋体の取付け、取外しを容易にするため、 ネジを大幅に削減した防水筐体構造を提供する。
【解決手段】  筐体に対する蓋体の固定手段が、前記蓋 体の中央に位置してこれに着脱可能に螺合されるネジを 装備した固定部材と、前記蓋体の外周に位置してその四 隅に装備された門型の支持体と、先端側を該支持体に係 止すると共に基端側を前記固定部材の隅部に取り付けた 返し付きの梃子バーとを具備してなり、前記ネジを前記 蓋体に螺合することを特徴とする。
Patent JP-3000273-B1 (JP)
Title: 衝撃吸収衣服素材
IPC: A41D31/02
Filed: 1998-07-30
Granted: 2000-01-17
Abstract: 【要約】
【目的】  通気性が優れると共に厚さ及び面方向の緩衝 能が充分に発揮され、且つ極めて軽量の衝撃吸収衣服素 材を提供する。
【構成】  薄シート材１１からなるハニカム孔をもった 所定板厚のハニカム板１の一面または両面に面方向に多 数の小孔２２を穿設配置した適宜厚さの軟質合成樹脂材 又は合成樹脂発泡材からなる弾性基板２を積層並設した 構造になり、ハニカム板によって軽量化を達成し、ハニ カム板１のハニカム孔と弾性基板２の多数の小孔２２， ２２…との組み合わせによって表裏間の通気を確保する ことを特徴とする。
Patent JP-3030338-B1 (JP)
Title: 高強度難燃性マグネシウム合金の製造方法
IPC: C22F1/00
Filed: 1998-10-05
Granted: 2000-04-10
Abstract: 【要約】
【課題】  機械的強度の向上したカルシウムを含有する 難燃性マグネシウム合金を効率よく製造する方法を提供 する。
【解決手段】  カルシウム０．１〜１５重量％を含む難 燃性マグネシウム合金を塑性加工処理するか、又はカル シウム０．１〜１５重量％を含む難燃性マグネシウム合 金の既存含有量に加えて、融解時にアルミニウム又は亜 鉛をさらに添加し、冷却後塑性加工処理することにより 高強度難燃性マグネシウム合金を製造する。
Patent JP-2885772-B1 (JP)
Title: Ｃｄｍａシステムにおける受信方法、受信品質推定方法、送信電力制御方法及び送受信装置
IPC: H04W52/24
Filed: 1997-12-17
Granted: 1999-04-26
Abstract: 【要約】
【課題】  受信状態が劣化して受信誤りが発生するよう な場合でも受信品質の推定精度を向上させることがで き、通信の安定化を達成する方法及び装置を提供する。
【解決手段】  受信信号を逆拡散して受信シンボルを順 次生成し、予め定められた数の受信シンボルの振幅値を 平均して得られた振幅平均値に基づいてしきい値を生成 する。同時に、受信シンボルの振幅値に対して重み付け 係数を乗算することで重み付け受信シンボルを生成し、 受信シンボルの振幅値としきい値との比較を行う。比較 結果に従って、受信シンボル及び重み付け受信シンボル のいずれか一方を受信信号の受信シンボルとして順次選 択する。このようにして選択された受信シンボルを用い て受信品質の推定や送信電力制御などを行うことで、受 信状態が劣化し受信誤りが発生するような場合であって も、より正確な受信品質推定が可能となり、適切な送信 電力制御を安定して行うことができる。
Patent MD-4623-B1 (MD)
Title: Method of making decorative stretch seilings
Inventor: PANGA DMYTRO VOLODYMYROVYCH
Filed: 2015-10-23
Abstract: The invention relates to construction, particularly to the technology of making stretch ceilings out of polymeric materials, and can be used for creation of interior designs for domestic and other premises.The method of making decorative stretch ceilings includes the choice of a pattern, cutting the polymeric material, its further processing using a special-purpose computer-controlled machine with digital pattern pre-recorded in its memory, and mounting the cut and processed polymeric material by fixing the heated material in the profiles. At the same time, the polymeric material processing is performed by cutting out the patterns using a special-purpose computer-controlled machine equipped with a cutting tool, and the profiles are preliminarily set as a frame on a ceiling or walls.
Patent NO-321334-B1 (NO)
Title: 5-Fenyl-pyrimidin-derivater, fremstilling av disse samt anvendelse av disse for fremstilling av medikament for behandling av sykdom.
Inventor: STADLER HEINZ
IPC: A61P25/00
Filed: 2001-11-22
Abstract: Oppfinnelsen angår forbindelser med den generelle formel (I) hvori Rer hydrogen eller halogen; Rer hydrogen, halogen, lavere alkyl eller lavere alkoksy, Rer halogen, trifluormetyl, lavere alkoksy eller lavere alkyl, R/R'uavhengig av hverandre hydrogen eller lavere alkyl, Rer lavere alkyl, lavere alkoksy, amino, hydroksy, hydroksy-lavere alkyl, -(CH-)n,piperazinyl,. eventuelt substituert med lavere alkyl, -(CH)-morfolinyl, -. (CH)„-imidazolyl, -0-(CH)n+l-morfolinyl, -0-(CH). -piperidinyl, lavere alkyl-sulfanyl, lavere alkyl-sulfonyl, benzylamino, -NH-(CH)+1N(R")2, -(CH)+1 NH(CH)+1 N(R 4\-(CH2)n+1 N(R 4")eller -0-(CH)n+lN(R 4"), hvori R4 er hydrogen eller lavere alkyl, Rer hydrogen; Rog Rellerog Rkan være sammen med de to karbonringatomer -CH=CH-CH=CH-, med det forbehold at n for Rer 1; n er uavhengig 0 - 2; og X er -C(0)N(R4" )-eller -N(R4 )C(0)-; og farmasøytisk akseptable syreaddisjonssalter derav. Forbindelser med formel (I) har en høy affinitet til NK-1 reseptoren. De er derfor anvendelige for behandling av sykdommer som er relatert til denne reseptor.
Patent NO-321359-B1 (NO)
Inventor: ELSENER HANS
IPC: B66B5/00
Filed: 2002-06-25
Abstract: An elevator car is of a construction which facilitates inspection and maintenance function while enhancing passenger safety. The car includes a closeable inspection and maintenance opening in a sidewall. A transparent inspection window or an inspection grille forms a closure for the opening. The closure may be lockable, and can also include a sensor to monitor its state.
Patent NO-338327-B1 (NO)
Inventor: BARTNES TOR GUNNAR
IPC: E04F15/02
Filed: 2005-06-24
Abstract: A floor panel in particular made of laminate having side edges, which are provided with elements of a panel connection for being connected with further panels. In order to form such a floor panel for the installation into a floor heating, a to fixed arrangement of a heating means is formed on a bottom surface, and a heating connection is formed on at least one of the side edges.
Patent NO-332577-B1 (NO)
Title: Stotte for nodanrop i et lokalt tradlost nettverk (WLAN)
Inventor: KWAK JOSEPH A
IPC: H04W4/90
Filed: 2006-12-05
Abstract: Innretning for å identifisere et nødanrop i et trådløst lokalnettverk innbefatter en indikator for å identifisere et nødanrop som et nødanrop. Indikatoren kan være en flaggbit eller en informasjonskomponent. Informasjonskomponenten kan innbefatte posisjonsinformasjon vedrørende posisjonen til stasjonen som foretar nødanropet. Denne informasjonen kan brukes til å lokalisere innringeren. Posisjonsinformasjonen kan sendes fra stasjonen til et aksesspunkt atskilt fra nødanropet.
Patent NO-342509-B1 (NO)
Title: System og fremgangsmåte for kjøring av rørelementer ned i brønnboringer
Inventor: BOULIGNY VERNON JOSEPH
IPC: E21B19/20
Filed: 2007-11-26
Abstract: En åpen ramme med fire hjørner, forbundet enten til et toppdrevet rotasjonsdrivverk eller til en løpeblokk, har en rørklave ved sin nedre ende anvendt for å understøtte vekten av rørstrengen, og har et slamverktøy, en sentreringsinnretning, en styring, en spinner, en tang, en sentreringsstyring og en støttetang som bæres av rammen. En manipulatorarm henter opp et horisontalt rørstykke, manipulerer rørstykket til vertikal stilling og beveger rørstykket inn i det indre av rammen og tillater at rørstykket kan skrues inn i rørstrengen mens strengen senkes inn i borehullet.
Patent NO-342150-B1 (NO)
Title: Krystallinsk form A av [4-(3-fluor-5-trifluormetylpyridin-2-yl)-piperazin-1-yl]-[5-metansulfonyl-2-((S)-2,2,2-trifluor-1-metyl-etoksy)-fenyl]-metanon, metode for fremstilling av denne, farmasøytisk preparat omfattende denne samt anvendelse av denne for behandling av sykdom
Inventor: PINARD EMMANUEL
IPC: C07D213/74
Filed: 2009-06-19
Abstract: Foreliggende oppfinnelse angår fire distinkte krystallinske former og en amorf form av [4-(3-fluor-5-trifluormetyl-pyridin-2-yl)-piperazin-1-yl]-[5-metansulfonyl-2-((S)-2,2,2-trifluor-1-metyl-etoksy)-fenyl]-metanon og anvendelse av dem ved fremstilling av farmasøytiske preparater. Forbindelsene ifølge oppfinnelsen er egnet for fremstilling av et medikament anvendelige for behandling av psykoser, smerte, nevrodegenerative dysfunksjon i hukommelse og læring, schizofreni, demens og andre sykdommer hvor kognitive prosesser er svekket, så som oppmerksomhetssviktslidelser eller Alzheimers sykdom.
Patent PL-81220-B1 (PL)
Title: Derivatives of 7-aminocephalosporanic acid[us3719673a]
IPC: A23K20/195
Filed: 1970-11-27
Abstract: 1336318 Cephalosporins CIBA-GEIGY AG 27 Nov 1970 [28 Nov 1969 24 Dec 1969 17 Feb 1970 20 April 1970 2 June 1970] 56413/70 Heading C2A Novel cephalosporins having the Formula (I): and salts and esters thereof, wherein R 1 and R 2 are each hydrogen, an optionally substituted hydrocarbon radical or an optionally substituted heterocyclyl radical attached by a ring carbon atom, or R 1 and R 2 together represent a divalent hydrocarbon radical which may be interrupted by one or more hetero atoms and/ or substituted, and R 3 is a heterocyclyl radical of aromatic character which is attached by a ring carbon atom and contains at least two nitrogens and a further N, S or O atom, and which may be substituted by C 1 -C 5 alkyl, C 1 -C 5 alkylthio, cycloalkyl, thienyl or phenyl, the latter being optionally substituted by halogen, nitro, C 1 -C 5 alkyl or C 1 -C 5 alkoxy, are prepared (a) by reacting a compound of Formula (II): in which R<SP>1</SP> 3 is an esterified hydroxy group and R 4 is an acyl radical of Formula (Ia): wherein R 1 and R 2 are as above, with a thiol of formula (Ib): HS-R 3 or a metal salt thereof; or (b) by acylating a compound of Formula II wherein R 4 is H and R<SP>1</SP> 3 is -S-R 3 with an acylating agent providing an acyl group of Formula Ia. The products of (a) or (b) may, when R 1 and R 2 are each hydrogen, be further reacted with an aldehyde, a ketone or a nitrile, preferably in the presence of a catalyst (such as an acetate of ammonia or an amine, p-aminophenol or a salt of the compound (II) with ammonia or an amine) to give a compound of Formula (I) in which R<SP>1</SP> and R<SP>2</SP> together form an optionally substituted alkylidene or cycloalkylidene group. Pharmaceutical compositions having broad spectrum antibacterial activity comprise a compound of Formula (I) above or a salt or ester thereof and a pharmaceutical diluent, excipient or carrier.
[GB1336318A]