baber/WOPTO huggingface dataset:
Patent CN-100541620-C (CN)
Inventor: YUH CHENG
IPC: G11B7/004
Filed: 2007-06-05
Granted: 2009-09-16
Abstract: 本发明提供一种摆动信号检测电路，包括一自动增益控制模块、一减法器、一模拟至数字转换器、及一数字带通滤波器。所述的自动增益控制模块放大一光盘片读取头检测的一第一输入信号及一第二输入信号至相同大小，以得到一第一放大信号及一第二放大信号。所述的减法器将所述的第一放大信号与所述的第二放大信号相减，以得到一模拟摆动信号。所述的模拟至数字转换器将所述的模拟摆动信号转换为一第一数字摆动信号。所述的数字带通滤波器接受所述的第一数字摆动信号于一频带范围内的成分而除去所述的第一数字摆动信号于所述的频带范围外的成分，以得到一第二数字摆动信号。
Patent CN-100568610-C (CN)
Title: 电动车用镍氢电池管理系统
Inventor: JIANGUO RAN
IPC: G06Q90/00
Filed: 2007-08-17
Granted: 2009-12-09
Abstract: 本发明涉及一种电动车用镍氢电池管理系统，构成如下：系统主机接有电压、温度检测模块，风扇控制模块，容量检测仪表构成，系统主机为一单片机，接有串口1、串口2、数据存储器、时钟、RS232串口，数字量接口，容量检测仪表由电池分流器、分流器电压信号调整、电压-频率变换依次串接后，接在单片机上，单片机接有与AGV控制计算机通讯串口及显示单元构成，电池电压、温度检测模块由五路电池电压信号调理、模拟信号多路器、A/D模数转换接口依次串接后，接在单片机上，单片机接有五路温度传感器、光电隔离串口构成，以及接有风扇控制模块构成。本系统减轻了重量，提高了能量利用率，确保电池在适宜的状态下工作。
Patent CN-100593511-C (CN)
Inventor: SHENGLI AN
IPC: C01B31/02
Filed: 2007-12-14
Granted: 2010-03-10
Abstract: 本发明涉及一种以酚醛树脂做碳源制备碳纳米管及碳纳米纤维的方法，其特征是：将占基体材料重量百分比为1～3%硝酸镍配制成质量百分浓度为10%水溶液后与基体材料充分混合，基体材料是氧化铝粉和鳞片石墨中的至少一种，并对其进行烘干以除去其中的水分；然后将占基体材料重量百分比3～15%酚醛树脂加入到这些混有催化剂硝酸镍的基体材料中，充分混合后将混合物于100～200MPa的压力下压制成块状物料；将成型后的块状物料置于干燥箱烘干至水分含量为1.0-2.0wt%，在电阻炉中埋碳加热到1200℃～1450℃，保温4～5小时后，冷却至0℃到45℃之间，即可在氧化铝和/或石墨基体上生长出碳纳米管及碳纳米纤维。其优点是：制备方法简便，工艺过程简单，各项工艺参数易于控制。
Patent CN-100577404-C (CN)
Inventor: DAOJIN DAI
IPC: B31C7/00
Filed: 2007-12-05
Granted: 2010-01-06
Abstract: 本发明公开了一种纸杯机，其特征在于：所述多工位分度转盘设有主分度转盘(5)和副分度转盘(25)两个，所述送底工位(8)、卷底工位(10)、杯底滚花工位(14)设在主分度转盘上，所述杯口卷边工位、出杯工位(24)设在副分度转盘上。该纸杯机具有结构简单、生产速度快、产品合格率高的特点。
Patent CN-100573054-C (CN)
Title: 一种工程车辆转台的回转角度检测装置及其工程车辆
Inventor: SHENGHUA LI
IPC: A62C27/00
Filed: 2008-02-01
Granted: 2009-12-23
Abstract: 本发明公开一种工程车辆转台的回转角度检测装置，包括角度测量单元、控制单元、零点检测器单元；所述角度测量单元用于检测所述转台的回转角度并将其发送到所述控制单元；所述零点检测器单元确定对转台旋转角度零点的零点感应信号，并将其发送到所述控制单元；所述控制单元具有零点标定程序，该程序根据所述零点检测器单元发出的零点感应信号和此时获得的所述角度测量单元的读数值，获得零点偏移量；根据零点偏移量，控制单元将所述角度测量单元输出的测量值转换为以转台上的特定位置为零点的相对坐标系的角度测量值，并以该角度测量值进行控制处理。本发明提供的回转角度检测装置获得的角度信号非常直观，可方便的使用于诸如防倾翻控制等场合。
Patent PT-1235579-E (PT)
Inventor: BECOURT PHILIPPE
IPC: A61K47/18
Filed: 2000-11-22
Abstract: The invention concerns a pharmaceutical composition comprises trimegestone optionally associated with an oestrogen, characterized in that it comprises a buffer solution whereof the pH, when it is introduced in the composition, ranging essentially between 2 and 5.5. The invention also concerns the methods for making such a composition and the primary package containing them.
Patent PT-1309810-E (PT)
Inventor: MAURIZIO BIGI
IPC: F16H61/32
Filed: 2001-08-08
Abstract: A device for the sequential control of a gearbox with hand-operated selection and engagement of gears for motor vehicles, the gearbox including a plurality of forks (1) for actuating corresponding groups of gearwheels, comprises: a rotatable drum (11) equipped with one cam groove (12); a plurality of studs (13) engaging in the cam groove (12) for being moved parallel to the axis of the drum (11); an angle selector (15, 16) for controlling rotation of the drum (11); actuating members (2, 3, 4, 7, 9) each connecting a stud (13) to a respective fork (1) so as to cause each fork to translate axially fast with the respective stud (13). The actuating members comprise first (3, 4) and second (7, 9) axially mobile elements, wherein each first mobile element is fast for translation with a rod (2) connected to a respective fork (1) and each second mobile element is fast for translation with a respective stud (13) and a respective first mobile element.
Patent PT-1212313-E (PT)
Inventor: MONDON MARTINE
IPC: C07F9/655
Filed: 2001-10-05
Abstract: The invention concerns novel flavone and isoflavone derivatives of formulae (Ia) and (Ib) wherein: X represents a group of formula -COOR, or -PO(OR)<SUB>2</SUB>; R represents a hydrogen atom or an alkaline or alkaline-earth metal, or a lower alkyl group; R<SUB>1 </SUB>represents a hydroxy group, a lower alkoxy group or an acyloxy group; R<SUB>2 </SUB>and R<SUB>3</SUB>, identical or different, represent a hydrogen or halogen atom, or a trifluoromethyl group, a trichloromethyl group, a hydroxy group, an alkoxy group or an acyloxy group comprising 1 to 5 carbon atoms, or R<SUB>2 </SUB>and R<SUB>3 </SUB>can combine to form an alkylene dioxy group. The invention is useful for rheumatic diseases.
Patent PT-1223177-E (PT)
Title: Process for the production of a purified fraction of low-density lipoproteins (ldl) from egg yolk and preservation medium containing such lipoproteins
Inventor: ANTON MARC
IPC: C07K14/775
Filed: 2002-01-11
Abstract: Preparation of a purified fraction (A) of low density lipoprotein (I) from egg yolk plasma (B) comprising adding at least one ammonium salt (II) to give, after removal of the precipitate, a (I)-enriched fraction and dialyzing this fraction against aqueous, preferably saline, solution, so that, as ammonium ions are removed, (I) precipitates selectively, is new.  An Independent claim is also included for a medium (C), for refrigerated or frozen storage of living cells, that includes (A).
Patent PT-1387989-E (PT)
Inventor: BRIDENNE PIERRE
IPC: F24F3/16
Filed: 2002-05-14
Abstract: Device and method for diffusing a protective flux. In order to protect one area of a service station, a more or less parallel air flow is created in the direction of the area. Above a threshold F, the air flow has a gradually increasing speed V 22 and, below the threshold, the air flow speed V 21 is more or less uniform along the length of a flow section in a plane P which is transverse to the direction of flow D. One possible configuration for an air flow diffusion device, which allows a confinement barrier to be created, consists of a diffusing wall comprising a main wall and a lateral wall. The main planar wall is adapted to diffuse a main laminar flow in the sterile area to be protected. The lateral wall is adapted to diffuse a lateral flow divergent from the main flow. A skirt is disposed to create an obstacle to the lateral flow and to accelerate the flow by of deflection.
Patent PT-1386935-E (PT)
Inventor: JUNGAHN KIM
IPC: C08F4/26
Filed: 2003-02-24
Abstract: The present invention relates to a process for preparing copolymer hydrogels with controlled molecular weights and having both thermo- and pH- responsive properties, wherein the process comprises the steps of (a) providing sulfonamide type styrenic or (meth)acrylamide-based monomers exhibiting different pKa values; (b) providing poly(N-isopropylacrylamide) or crosslinked poly(N-isopropylacrylamide -co- methylene bisacrylamide) hydrogels having thermo-responsive properties; and (c) providing several hydrogels exhibiting pH-sensitive properties and random or block copolymerizations of the sulfonamide type styrenic or (meth)acrylamide-based monomers prepared in step (a) with N-isopropylacrylamide and/or methylene bisacrylamide monomers used in step (b) in a polar or non-polar solvent; wherein said steps (b) and (c) are carried out by controlled/living radical polymerization using alkyl halides as the initiators and the transition metals with phosphine or amine ligands as the catalysts. The present invention also relates to the copolymer hydrogels made by the aforesaid process.
Patent PT-1411706-E (PT)
Inventor: SANG-CHEOL SHIN
IPC: H04W88/02
Filed: 2003-05-21
Abstract: The apparatus has a terminal equipment (TE) which performs internet web browsing and mobile communication web browsing. A mobile terminal (MT) performs web browsing by itself or supports web browsing of the terminal equipment, by connecting an internet server and mobile communication web server. An independent claim is also included for integrated web browsing service provision method.
Patent PT-1535646-E (PT)
Inventor: ROGER REMY
IPC: A62D3/115
Filed: 2003-03-26
Abstract: The invention is comprised of an apparatus in form of a single transportable unit, a chamber for the main treatment, with the necessary dimensions to fit the canister drum containing the waste which is to be eliminated, and with the capacity to create and manipulate the direction of the RF plasma flows at a temperature higher than 10.000  DEG K so that it totally surrounds the container, in order to carry out its complete dissociation. The chamber has the capacity to individually collect and select the various materials by species resulting from the dissociation, transporting them by means of the plasma flow generated by an argon gas or other gasses which are injected into the chamber at the far end, where the gas conditioning / separator is situated. This chamber which carries out the main treatment process has embedded antennas which emit the radio frequency which produces and maintains the plasma core and is associated to:  a) A robotic unit to load the waste drums / canisters into the main chamber. ; b) A RF generator unit; c) A main chamber cooling unit and peripherals; d) A control and monitoring unit for the entire process and e) A power generator with the peripherals to regulate its functions f) Database for product compatibility / inventory  <??>The invention extends as well to the method for the elimination of waste. <IMAGE>
Patent PT-1529133-E (PT)
Title: Method for the production of paper, paperboard, and cardboard
Inventor: MAHR NORBERT
IPC: D21H17/37
Filed: 2003-07-23
Abstract: A process for preparation of paper, pasteboard, or cardboard involving cutting of the paper pulp, addition of microparticles of cationic polymer, and a finely divided inorganic component after the last cutting step and before pulp swelling, dewatering of the pulp, and sheet formation and drying of the sheets is new. A process for preparation of paper, pasteboard, or cardboard involving cutting of the paper pulp, addition of microparticles of cationic polymer, and a finely divided inorganic component after the last cutting step and before pulp swelling, dewatering of the pulp, and sheet formation and drying of the sheets. The cationic polymer of the microparticle system is cationic polyacrylamide, polymer containing vinylamine units, and/or polydiallyl dimethylammonium chloride containing polymer of mean mol.wt. 500,000 Dalton, and maximum charge density 4.0 meq/g, where the microparticle system free from polymers of charging density (sic) more than 4 meq/g is used as the retention agent.
Patent PT-1689567-E (PT)
Title: Knife fixing method
Inventor: JONKKA ARVO
IPC: B23Q1/28
Filed: 2003-12-03
Abstract: The present invention concerns a method for fixing a knife in wood chipper apparatuses over the whole knife length between two steady surfaces. The fixing force is developed by means of a roller chain located between two counter surfaces and reversing its direction at each of its couplings, the roller chain having stationary end rollers and intermediate rollers at the couplings, the intermediate rollers rolling during the press movement in the longitudinal direction of the chain. An external force is applied to the roller chain, the force changing its direction at the touching points of the rollers, so that the force applied to the roller chain affects to multiple points of the counter surfaces thus forming a prominent total pressing force.
Patent PT-1597085-E (PT)
Title: Method and device for production of a brochure
Inventor: GANSERT DIETER
IPC: B42C11/02
Filed: 2004-01-14
Abstract: A method for producing a brochure comprising an outer cover and a folded insert has the cover (4) and the insert sheet (5) loaded onto different feeds in different planes. The cover is passed under an adhesive spray (13) to provide a strip of adhesive which will form the inner spine. The sheet and cover are moved into position from opposite directions for a simple loading system for each. The aligned sheet and cover are pressed at right angles by a folding drive (6) and the folded, assembled brochure is passed through two pressure rollers (14, 15) to complete the process.
Patent PT-1603344-E (PT)
Title: Direct mode motion vector calculation method for b picture
Inventor: JEON BYEONG MOON
IPC: H04N19/94
Filed: 2003-01-07
Abstract: Using a method of calculation for direct mode motion vectors of a B (Bi-predictive) picture in a moving picture coding system to extract the direct mode motion vectors of the B picture comprises of a co-located block in a list 1 reference picture for direct mode has two motion vectors, selecting any one (a list 0 motion vector or list 1 motion vector) of the two motion vectors, and deriving the direct mode motion vectors of the B picture from the selected motion vector. An independent claim is included for a method of calculation of direct mode motion vectors from a B picture that is temporally closer to the list 1 reference picture.
Patent PT-1681126-E (PT)
Title: Laser cutting of low thickness metallic workpiece with a dual-focal lense
Inventor: CHOUF KARIM
IPC: B23K26/067
Filed: 2005-12-22
Abstract: The laser beam cutting of a metal component with a thickness of less than 5 mm 25 uses a double focussing lens so that the laser beam may be focussed on two distinct focal points situated on the axis of the laser beam. The lens has a focal length of between 80 and 135 mm.
Patent PT-1719227-E (PT)
Title: Wall flush mount supporting device for electric or electronic components
Inventor: PAOLUCCI MARCO
IPC: H02G3/08
Filed: 2005-02-15
Abstract: A wall flush mount supporting device for electric or electronic components. A wall recessed box with a collar has an external cover or finishing plate in perfectly co-planar position with the wall in which the supporting device is recessed. The external surface of the component and the external surface of the finishing plate do not protrude from the frontal edges of the collar.
Patent PT-1777173-E (PT)
Title: Easily opened flexible vacuum packaging for single portions of pasty fluids
Inventor: NEGRIN PEDRO RAMON MORA
IPC: B65D75/58
Filed: 2005-03-18
Abstract: Easy-open flexible vacuum container for single doses of doughy fluids comp
Patent PT-1813610-E (PT)
Title: Novel pyridonecarboxylic acid derivatives or salts thereof
Inventor: YAZAKI A
IPC: A61K31/4709
Filed: 2005-11-17
Abstract: The present invention provides an agent which exhibits excellent antibacterial activity, low toxicity, improved bioavailability, and low binding rate to serum proteins. The present invention is directed to a pyridonecarboxylic acid derivative represented by formula (1):   
or a salt thereof, wherein R 1  represents a methyl group, a fluorine atom, or a chlorine atom; R 2  represents a hydrogen atom or a lower alkyl group; R 3  represents an isopropyl group or a tert-butyl group; R 4  represents a methyl group or a halogen atom; and R 5  represents a fluorine atom or a chlorine atom. The present invention is also directed to an antibacterial agent and a medicament containing the derivative or the salt thereof as an active ingredient.
Patent PT-2089866-E (PT)
Title: Intruder detection system
Inventor: MORCOM CHRISTOPHER JOHN
IPC: G01S17/26
Filed: 2007-11-12
Abstract: An intruder detection system comprises an illumination means for illuminating a field of view with a modulated optical signal, modulated by a modulation signal; an optical receiver for receiving a delayed reflected signal; a cross correlator for calculating a cross correlation function between the modulation signal and the received delayed reflected signal; and means for detecting changes in the cross correlation function, a change being used to provide intruder detection. This system uses optical sensing and cross correlation calculation to enable an intruder detection signal to be obtained. This can enable a solid state, low cost, and reliable sensor to be provided for detecting intruders.
Patent PT-2118871-E (PT)
Title: Method for preventing cumulative collisions
Inventor: HEDDEBAUT MARC
IPC: G08G1/16
Filed: 2008-01-28
Abstract: The method involves providing a carrier of the frequency being emitted towards a route by the radio electric signal, and providing another carrier of the frequency equal to the former frequency by another radio electric signal since a transmitter located on the route is upstream of an incident. A curve (12) higher than a curve (9) of the former signal is provided at the level of the transmitter by the latter radio electric signal. An independent claim is also included for a device for protecting of an on-accident on a circulation path on which an incident occurs.
Patent PT-2467250-E (PT)
Title: A ground covering structure and a plant and a method for producing said structure
Inventor: FERRAIOLO FRANCESCO
IPC: A61F13/15
Filed: 2010-08-13
Abstract: A production plant for a ground covering structure (6) comprises a plant inlet zone and a plant outlet zone for a grid reinforcing member (10). The plant further comprises movement means (4) designed in operation to move the grid reinforcing member (10) along a predetermined path from the inlet zone to the outlet zone, supply means (11) for the supply of plastics material in the fluid state in the form of threads (7) to the reinforcing member (10) disposed along the predetermined path, and cooling means (2, 3) for cooling the plastics material in the form of threads (7) which are tangled on the grid reinforcing structure. The inlet zone and the outlet zone are disposed opposite one another along the predetermined path with respect to the supply means.
Patent PT-651039-E (PT)
Inventor: BRAEKEN JOZEF
IPC: C09D167/08
Filed: 1994-10-28
Abstract: High-solids air-drying or semi-drying alkyd paints essentially comprise, as binder, a conventional air-drying or semi-drying long-oil or medium-oil alkyd resin, and as reactive diluent an oligomer of polyol, polyisocyanate and unsaturated fatty acids. Use of the oligomer as reactive diluent is also claimed.
Patent PT-739201-E (PT)
Inventor: DEBREGEAS PATRICE
IPC: A61K9/50
Filed: 1995-01-12
Abstract: Medicinal form contains a combination of microgranules of derivatives 5-nitroimidasole, consisting, on the one hand, of gastro-resistant microgranules and, on the other hand, of microgranules with a prolonged release of a medicinal agent. Gastroresistant microgranules are intended to guarantee the efficiency of the medicinal form of the present invention, primarily, in the upper part of gastrointestinal tract, while the microgranules with a prolonged medicinal agent release are operate mainly in the lower part of gastrointestinal tract.
Patent PT-748285-E (PT)
Inventor: RAJA YOGENDRA KHIMJI
IPC: B42D15/10
Filed: 1995-03-02
Abstract: PCT No. PCT/GB95/00456 Sec. 371 Date Aug. 29, 1996 Sec. 102(e) Date Aug. 29, 1996 PCT Filed Mar. 2, 1995 PCT Pub. No. WO95/23708 PCT Pub. Date Sep. 8, 1995There is described a security device 10 and a method for verifying the identity of a person making a transaction. The security device 10 comprises a document 12 bearing a picture of the intended user 14 of the security device 10, the picture 14 having been produced by printing of picture 14 by a printer activated by computer memory in which a likeness of the intended user is stored. The devices 10 may be self adhesive for attachment to a second document and be provided in a form comprising a plurality of such devices.
Patent PT-804316-E (PT)
Inventor: ARNOLD THEO
IPC: D04H1/492
Filed: 1995-05-24
Abstract: PCT No. PCT/EP95/01978 Sec. 371 Date Mar. 18, 1997 Sec. 102(e) Date Mar. 18, 1997 PCT Filed May 24, 1995 PCT Pub. No. WO96/09915 PCT Pub. Date Apr. 4, 1996A tool for a mechanical surface treatment of an object by friction is disclosed. The tool is cut to a desired shape and size from a processed fleece of fibers. The fleece is produced by exclusively mechanical processes as a flexible random-fiber fleece which permits, during the treatment of the object at a particular treatment pressure, immersion and at least partial envelopment of the object within the fleece. The fleece has a mechanical strength of 150-500 N/50 mm, preferably at least 300 N/50 mm, and a mean elongation at rupture of 50-150%, preferably 80-100%, according to DIN 53 857/2.
Patent PT-749969-E (PT)
Inventor: BOGARDUS JOSEPH BALLARD
IPC: A61P31/18
Filed: 1996-06-04
Abstract: The present invention concerns a novel process using controlled cooling for obtaining d4T polymorphic Form I from a mixture containing one or more of polymorphic Forms I, II and III. Compound d4T has been approved for use in the treatment of AIDS.
Patent PT-796492-E (PT)
Inventor: BRAAT JOSEPHUS JOHANNES MARIA
IPC: G11B7/24041
Filed: 1996-08-29
Abstract: A record carrier having standard and high-density information layers. The standard density layer, e.g. in a standard CD format, is positioned at the bottom of a substrate, and is read out through the substrate with a laser beam. The thickness of the substrate is within the CD specification, e.g. 1.2 mm. At least one high-density layer is formed by a material which is (nearly) transparent for the laser wavelength of standard CD players ( lambda =780 nm), but is (at least partially) reflective for shorter wavelengths used for high-density discs ( lambda =635 nm). To achieve a high density, a smaller track pitch and smaller pits are used in the high-density layer(s). To achieve better reading signals from both layers, the high-density layer is positioned closer to the side of entrance of the laser beam in the substrate. A higher numeric aperture of the focusing lens and, therefore, a smaller spot for the shorter wavelength results. The high-density layer is preferably positioned midway in the substrate, e.g. at 0.6 mm. Such high-density layer configuration is compatible with two-sided high-density discs which have a total thickness of 1.2 mm. The information content of the standard layer may be duplicated on the high-density layer, or it may be represented by a different coding scheme.
Patent PT-904228-E (PT)
Inventor: VERHAEGHE JAN
IPC: B62D29/04
Filed: 1997-06-10
Abstract: PCT No. PCT/BE97/00068 Sec. 371 Date Dec. 14, 1998 Sec. 102(e) Date Dec. 14, 1998 PCT Filed Jun. 10, 1997 PCT Pub. No. WO97/48589 PCT Pub. Date Dec. 24, 1997A frame for a vehicle with at least two longitudinal members (8) and at least one wheel shaft (5) supported on suspension members (6) that are fixed to the longitudinal members (8). The longitudinal members (8) are made of composite material and various parts of the frame are glued together.
Patent PT-932830-E (PT)
Inventor: KEINANEN KARI
IPC: G01N33/536
Filed: 1997-06-30
Abstract: This invention relates to a fluorescence-based immunoassay method for the detection of an analyte, or for the measurement of its concentration in a biological sample. The method is based on the ability of a multivalent analyte to induce aggregation of receptor molecules labeled with a fluorophore, which molecules are anchored to and are freely mobile on a lipid membrane, and thereby cause changes in the fluorescence.
Patent PT-1025094-E (PT)
Inventor: BERG STEFAN
IPC: C07D211/26
Filed: 1998-09-09
Abstract: The present invention relates to intermediates of the formula useful in the preparation of piperazinyl-substituted indan derivatives, wherein Y is CONR<SUB>2 </SUB>wherein R<SUB>2 </SUB>is H or C<SUB>1</SUB>-C<SUB>6 </SUB>alkyl; R<SUB>3 </SUB>is C<SUB>1</SUB>-C<SUB>6 </SUB>alkyl, C<SUB>3</SUB>-C<SUB>6 </SUB>cycloalkyl or (CH<SUB>2</SUB>)<SUB>n</SUB>-aryl, wherein aryl is phenyl or a heteroaromatic ring containing one or two heteroatoms selected from N, O and S and which may be mono- or di-substituted with R<SUB>4 </SUB>and/or R<SUB>5</SUB>, wherein R<SUB>4 </SUB>and R<SUB>5 </SUB>are as defined in the specification; and R<SUB>9 </SUB>is H, C<SUB>1</SUB>-C<SUB>6 </SUB>alkyl, C<SUB>3</SUB>-C<SUB>6 </SUB>cycloalkyl, OCF<SUB>3</SUB>, OCHF<SUB>2</SUB>, OCH<SUB>2</SUB>F, halogen, CN, CF<SUB>3</SUB>, OH, C<SUB>1</SUB>-C<SUB>6 </SUB>alkoxy, C<SUB>1</SUB>-C<SUB>6 </SUB>alkoxy-C<SUB>1</SUB>-C<SUB>6 </SUB>alkyl, NR<SUB>6</SUB>R<SUB>7</SUB>, SO<SUB>3</SUB>CH<SUB>3</SUB>, SO<SUB>3</SUB>CF<SUB>3</SUB>, SO<SUB>2</SUB>NR<SUB>6</SUB>R<SUB>7</SUB>, an unsubstituted or substituted heterocyclic or heteroaromatic ring containing one or two heteroatoms selected from N and O, wherein the substituent(s) is(are) C<SUB>1</SUB>-C<SUB>6 </SUB>alkyl; or COR<SUB>8</SUB>; wherein R<SUB>6</SUB>, R<SUB>7 </SUB>and R<SUB>8 </SUB>are as defined in the specification. The invention further relates to a process for the preparation of the intermediates.