baber/WOPTO huggingface dataset:
Patent CN-100572309-C (CN)
Title: 一种污油泥分解方法
Inventor: XUEPING SUI
IPC: C02F11/00
Filed: 2007-09-24
Granted: 2009-12-23
Abstract: 一种污油泥分解方法，其特征在于将污油泥加入可加温的处理槽中，按占污油泥重量的百分比加入偏硅酸钠、聚醚多元醇和乙二氨四乙酸与污油泥搅拌均匀，在加热条件下与油污泥反应，使油、泥、水彻底分离，提取上层石油成份，其余泥、水作无公害处理。按污油泥重量百分比加入的偏硅酸钠为2.5-3.0%、聚醚多元醇为0.3-0.5%、乙二氨四乙酸为0.05%。偏硅酸钠、聚醚多元醇及乙二氨四乙酸与污油泥在加温到70-85℃条件下反应。上述的三种化学物品无毒均为中性材料，不会产生二次污染，用量少分解污油泥彻底。具有原料来源广泛、价格较低、工艺简单、易于操作的优点。
Patent CN-100500547-C (CN)
Inventor: WENYU LI
IPC: B66C1/40
Filed: 2007-07-30
Granted: 2009-06-17
Abstract: 本发明提供一种起重机保护装置，由起重负荷变化监测装置和保护控制装置串接组成。监测装置包括：上端与挂钩相连、下端与下拉杆相连的重量传感器、固定在下拉杆上的吊环、两端分别与该传感器和信号输出端口相连的信号线路I；保护控制装置包括：与吊环固连的连接杆及依次固连的拉杆、吊钩，套装拉杆的弹簧，套装连接杆、拉杆的套筒，固定于套筒上端的端塞，固定在拉杆上端带撞击头的弹簧压板，固定在套筒上带有行程开关的支撑架和信号发射装置，连接信号发射装置与行程开关I、信号输出端口与行程开关II的两信号线路等。优点是可自动监测起重负荷变化，通过起重机司机室内显示器和声、光报警，正确判断起重物超重或遇阻及是否下放到位。
Patent CN-100517254-C (CN)
Inventor: CHANGYOU LIU
IPC: G06F11/22
Filed: 2007-02-16
Granted: 2009-07-22
Abstract: 本发明提供了一种数据线测试方法，其包括以下步骤：步骤S102，从被测器件的地址空间中任意选择不同的四个地址，同时产生不同的两个测试数据；步骤S104，分别将两个测试数据中的第一数据和第二数据写入四个地址中的第一地址和第二地址中；步骤S106，读出第一地址中的数据并存储为第一读取数据，以及读出第二地址中的数据并存储为第二读取数据；步骤S108，判断第一读取数据是否与第一数据相同，以及第二读取数据是否与第二数据相同；以及步骤S110，根据判断结果，执行相应的操作。本发明测试逻辑简单，测试效率高，适用于各种类型的RAM和RAM、以及带有总线接口的各类功能器件和FPGA等。
Patent CN-100549209-C (CN)
Title: 高耐蚀性镀覆钢材的二元合金镀覆材料及其制造方法
Inventor: LIXIN FENG
IPC: B32B15/01
Filed: 2007-08-23
Granted: 2009-10-14
Abstract: 本发明涉及一种二元合金镀覆材料及其制造方法，其中所述的二元合金由Al和RE组成，所述材料还包含微量添加元素，所述微量添加元素选自Fe、Ti、B、Pr、Nd、Pb、Cu、Sn、Bi、Ni、Sb中的一种或几种，并且所述的微量添加元素总含量在0.5%以下，还公开了一种制造方法，包括将各种元素按上述比例进行配比后，加入熔炼炉中熔炼，熔炼温度为700～850℃，经搅拌、精炼、除渣，最后浇注成合金锭，本发明镀覆钢材有高的耐蚀性和优良的抗疲劳性能，与基体金属结合力强，能广泛应用于家电、建材、汽车行业。
Patent CN-100568582-C (CN)
Title: 自动套胶管装置
Inventor: YAN ZHANG
IPC: H01M6/14
Filed: 2008-04-09
Granted: 2009-12-09
Abstract: 本发明涉及锂电池包装生产设备领域，特别涉及一种向电池套胶管的垫片输送装置。自动套胶管装置，包括拉胶棒，其伸入胶管端部；送料夹，其可开合地位于拉胶棒中部；拉胶开夹器，控制送料夹的开启与闭合；压拉胶棒块，其横向压在拉胶棒顶端的侧部；套胶棒，其为圆柱状、位于拉胶棒的正上方，所述套胶棒上套有压胶套，所述套胶棒固定连接一套胶棒轴；可升降的压上胶轴，其位于所述套胶棒轴的正上方；套胶摆杆，其固定连接所述套胶棒轴；压胶套顶轴，其固定连接所述套胶摆杆；切胶刀，其位于所述套胶棒和所述拉胶棒之间；力传导机构；驱动电机，通过所述力传导机构带动所述压胶套顶轴旋转、所述压上胶轴升降、所述拉胶开夹器开闭。该装置可实现自动送胶管和将胶管套入电池。
Patent CN-100551486-C (CN)
Inventor: WENBIN LIU
IPC: B01D37/04
Filed: 2008-04-14
Granted: 2009-10-21
Abstract: 本发明公开了一种自洁机械式过滤器的清洗驱动器，包括与吸污器总成轴向连动的活塞顶杆和活塞以及，在活塞腔室外侧自内向外依次并行设置的背压腔室、触发腔室、驱动腔室、泄压腔室，其中，触发腔室和驱动腔室由一活动的刚性壁液密封分隔，当刚性壁在触发腔室内有触发信号时，向驱动腔室方向运动，使驱动腔室与泄压腔室连通而泄压，使活塞驱动吸污器总成成轴向运动。由于使用了刚性壁可承受很大的压力，使本过滤器可在有非常高的原水水压情况下工作。
Patent CN-100551900-C (CN)
Inventor: SHAOLIN HUANG
IPC: A61P3/12
Filed: 2008-03-10
Granted: 2009-10-21
Abstract: 一种门冬氨酸钾的制备方法，属化学领域，主要特征为于水中加入钾盐和门冬氨酸，使反应后经除去部分或全部水分，剩余物加入到可与水互溶的非水溶剂中析出固体，经粉碎、干燥得到成品的方法，与现有技术比较，具有显著提高产品收率、降低生产成本、提高生产效率及产品质量等优势。
Patent PT-1228757-E (PT)
Inventor: KLEON TSETIS
IPC: A61K47/10
Filed: 2001-06-05
Abstract: This invention relates to stable pharmaceutical solutions of Nimesulide, consisting of 80% Glycerol formal, 15% Ethanol and 5% Water and/or 75% Glycerol formal, 10% Ethanol, 10% Propylene glycol and 5% Water. These solutions are suitable for the preparation of parenteral pharmaceutical formulations, destined to therapeutic purposes.
Patent PT-1315731-E (PT)
Inventor: LOCHEAD ALISTAIR
IPC: A61K31/519
Filed: 2001-08-31
Abstract: The invention relates to a dihydroimidazoÄ1,2-aÜpyrimidone derivative represented by formula (I) or a salt thereof: <CHEM>  wherein :     X represents hydrogen atoms, a sulphur atom or an oxygen atom; Y represents a bond, an oxygen atom, a sulphur atom, a sulfonyl group, a sulfoxyde group, a carbonyl group, a nitrogen atom being optionally substituted or a methylene group optionally substituted;   R1 represents a 2, 3 or 4-pyridyl group optionally substituted;   when Y represents a bond, a methylene group optionally substituted or a carbonyl group, then R2 represents a C1-6 alkyl group, a C3-6 cycloalkyl group, a C1-2 perhalogenated alkyl group, a C1-3 halogenated alkyl group, a C1-4 alkylthio group, a C1-4 alkoxy group, a naphthyl group, a phenylthio group, a benzyl group, a phenyl ring, a pyridyl ring, an indole ring, a pyrrole ring, a thiophene ring, a furan ring or an imidazole ring ; the benzyl group, the phenyls, the naphthyl or the rings being optionally substituted by 1 to 3 substituents; when Y represents an oxygen atom, a sulphur atom, a sulfonyl group, a sulfoxyde group or a nitrogen atom being optionally substituted, then R2 represents a C1-6 alkyl group, a C3-6 cycloalkyl group, a C1-2 perhalogenated alkyl group, a C1-3 halogenated alkyl group, a naphthyl group, a benzyl group, a phenyl ring, a pyridyl ring, an indole ring, a pyrrole ring, a thiophene ring, a furan ring or an imidazole ring; the benzyl group, the phenyls, the naphthyl or the rings being optionally substituted by 1 to 3 substituents;     and n represents 0 to 3.   The invention relates also to a medicament comprising the said derivative or a salt thereof as an active ingredient which is used for preventive and/or therapeutic treatment of a neurodegenerative disease caused by abnormal activity of GSK3 beta .
Patent PT-1434622-E (PT)
Title: Device for delivering medicines by transpalpebral electrophoresis
Inventor: BEHAR FRANCINE
IPC: A61N1/04
Filed: 2002-10-11
Abstract: The invention concerns a device for ocular application of an active principle (1) comprising a main electrode (2) including an insulating layer, an adhesive layer designed to bind the insulating layer to a conductive layer, characterized in that the main electrode comprises a zone (21, 22) designed to be urged into contact with an eyelid.
Patent PT-1603866-E (PT)
Title: A process for the preparation of enantiomerically pure (r) or (s)-5-(2-aminopropyl)-2-methoxybenzenesulfonamide
Inventor: DUBEY SUSHIL K
IPC: C07C311/37
Filed: 2002-12-26
Abstract: The invention relates to a process for the manufacture of optically pure (R) or (S)-5-(2-aminopropyl)-2-methoxybenzenesulfonamide with D-i.e. (2S, 3S) or L-i.e. (2R, 3R)-tartaric acid to form a mixture of diastereomeric salts, separating the diastereomeric salts by fractional crystallization in a mixture of solvent systems and at the specified temperature range and contacting the individual salts so separated with a base to provide said R-(-)-5-(2-aminopropyl)-2-methoxybenzenesulfonamide or S-(+)-5-(2-amino propyl)-2-methoxybenzenesulfonamide.
Patent PT-1524968-E (PT)
Title: Oral pharmaceutical formulation in the form of a plurality of microcapsules for prolonged release of active principle(s) with low solubility
Inventor: MEYRUEIX REMI
IPC: A61K9/50
Filed: 2003-07-28
Abstract: The invention concerns microcapsules with prolonged release of active principles with low solubility, consisting of a core containing the active principle and coated with a polymer layer which controls the release of the active principle. The aim is that said oral microcapsules containing hardly soluble active principles, should have a coating film of sufficient thickness to ensure controlled permeability and should be adapted to industrial reproduction. This is achieved by the inventive microcapsules of mean diameter less than 1000 microns, and whereof the coating film contains a film-forming polymer (P1) insoluble in gastrointestinal tract fluids, a water-soluble polymer (P2), a plasticizer (PL), and optionally a lubricating surfactant (TA). Said microcapsules are characterized in that their coating films represents at least 3% p/p of dry matter, relative to their total weight and their core contains a hardly soluble active principle and a solubilizing agent (polyoxyethylene hydrogenated castor oil) which provides the core wherein it is contained with properties such that the behavior of the exposed core (non-coated) in a given dissolving test (TD), is as follows: release of 80% of active principle in less than two hours. The invention also concerns the use of such microcapsules in galenic formulation.
Patent PT-1489194-E (PT)
Title: Method of manufacture semifabricates of cuznpbsn alloy for hot deformation
Inventor: TAVAKOLI ABBAS BORHAN
IPC: C22F1/08
Filed: 2004-06-16
Abstract: The production of a semi-product of a CuZnPbSn alloy includes a spinning operation which does not include nor is it followed by a thermal treatment stage. Independent claims are also included for the following: (a) a finished product obtained fron the semi-product; and (b) the production of the finished product by deformation or machining, which does not include a thermal treatment stage.
Patent PT-1673959-E (PT)
Title: Method and device for checking the determination of the position of a mobile station carried out by a radio communication system
Inventor: MEILING AXEL
IPC: H04W64/00
Filed: 2004-07-22
Abstract: The position determination method uses checking of the position determination (POSPLMN) for the mobile subscriber (MS) provided within the radio communications system (PLMN) using an independent position determination (POSDGPS) effected via a device at the mobile station location (CONTROL LAPTOP), receiving the position determination provided within the communications system via a remote device (REMOTE LAPTOP) . An independent claim for a device for position determination of a mobile subscriber with checking of a position determination provided within a radio communications system is also included.
Patent PT-1948898-E (PT)
Title: High-speed industrial roller gate
Inventor: REJC GABRIJEL
IPC: E06B9/11
Filed: 2006-10-16
Abstract: A high-speed industrial roller door includes a door leaf that is guided in lateral guides and a drive that acts on the door leaf to displace the latter from an open position into a closed position and vice versa. The door leaf is held in the open position so that adjacent areas of the door leaf are not in contact with one another, in a spiral section of the lateral guides located in the vicinity of the door lintel. The roller door also includes a weight compensation device. The drive has two extension arms that are coupled via joints to the lintel end of the door leaf, said arms being situated at a distance from one another across the door width and being synchronously pivoted about a pivoting axis in a central area of the spiral section. The distance between the coupling points of the extension arms on the door leaf and the pivoting axis of the extension arms can be varied. This permits the provision of a roller door with a drive that is situated near the door lintel, for which the degree of potential damage during a collision with the door leaf is reduced in relation to prior arrangements.
Patent PT-2152358-E (PT)
Title: Skin permeation device for analyte sensing or transdermal drug delivery
Inventor: CHUANG HAN
IPC: A61B5/296
Filed: 2008-04-25
Abstract: Devices, systems, kits and methods for increasing the skin's permeability controlled by measured skin electrical parameter are described herein. They may be used for transdermal drug delivery and/or analyte extraction or measurement. The controlled abrasion device contains (i) a hand piece, (ii) an abrasive tip, (iii) a feedback control mechanism, (iv) two or more electrodes, and (v) an electrical motor. The feedback control mechanism may be an internal feedback control mechanism or an external feedback control. The kit contains the controlled abrasion-device, one or more abrasive tips, optionally with a wetting fluid. The method for increasing the skin's permeability requires applying the controlled abrasion device to a portion of the skin's surface for a short period of time, until the desired level of permeability is reached. Then the abrasion device is removed, and a drug delivery composition or device or an analyte sensor is applied to the treated site.
Patent PT-2335707-E (PT)
Title: Sulfoalkyl ether cyclodextrin compositions and methods of preparation thereof
Inventor: MOSHER GEROLD L
IPC: A61K31/724
Filed: 2005-10-26
Abstract: A particulate SAE-CD composition is provided. The SAE-CD composition has an advantageous combination of physical properties not found in known solid forms of SAE-CD. In particular, the SAE-CD composition possesses an advantageous physicochemical and morphological property profile such that it can be tailored to particular uses. The SAE-CD composition of the invention has improved flow and dissolution performance as compared to known compositions of SAE-CD.
Patent PT-2536642-E (PT)
Title: Cap for a container neck
Inventor: LUZZATO MICHEL
IPC: B65D41/04
Filed: 2011-02-14
Abstract: A cap for a container neck includes a tubular skirt defining a longitudinal central axis, and a plurality of longitudinal ribs distributed around a periphery of the skirt, each having a free supporting end for the pad of at least one finger of a user. The plurality of ribs on the skirt includes main ribs and secondary ribs, the supporting ends of the main ribs having a radius of curvature greater than a radius of curvature of the supporting ends of the secondary ribs. At least one of the secondary ribs is arranged between the main ribs. A tamperproofing strip, centered on the axis, is connected to the skirt by a weakening line designed to break when the cap is first opened. The tamperproofing strip includes longitudinal ribs distributed around the outer periphery of the strip, each with a free supporting end for the pad of at least one finger.
Patent PT-619369-E (PT)
Inventor: VANDERBEKE ERIK EUGENE MAURICE
IPC: A23L11/30
Filed: 1993-04-05
Abstract: An enzyme composition having a synergetic phytate hydrolyzing activity comprising a phytase having phytate hydrolyzing activity at a pH of from 2.5 to 5.0 and an acid phosphatase having phytate hydrolyzing activity at a pH of 2.5, in a low ratio corresponding to a pH 2.5/5.0 activity profile of from 0.8/1.0 to 3/1. Said enzyme composition preferably displays a higher synergetic phytate hydrolyzing efficiency through thermal treatment. Fungal enzymes, especially those from Aspergillus, are preferred. Use of said enzyme composition in food, feed and fodder products to improve phytate hydrolysis.
Patent PT-678241-E (PT)
Inventor: TAN HONG SHENG
IPC: A01N63/02
Filed: 1995-04-10
Abstract: Concentrated suspensions of polyene fungicides such as natamycin are disclosed which exhibit good chemical, microbial and physical stability and which are thus particularly suitable as stock suspensions for the preparation of immersion liquids and coating emulsions for treatment of food, feed and agricultural products. Such suspensions have a pH in the range 3 to 4.8 and include a thickening agent.
Patent PT-804186-E (PT)
Inventor: GARCIA MARIA L
IPC: C12P17/18
Filed: 1995-01-20
Abstract: The present invention relates to compounds of the formula:   <IMAGE>   and the pharmaceutically acceptable salts thereof which are useful as potassium channel antagonists, particularly Maxi-K channel antagonists, and thus useful in treating Alzheimer's Disease and other cognitive disorders. This invention is also related to a method of making the compound of formula (I).
Patent PT-768082-E (PT)
Inventor: PATELL MAHESH
IPC: A61K9/28
Filed: 1996-07-26
Abstract: Gelatin coated pharmaceutical dosage units containing, for example, analgesic compounds, such as aspirin, stabilized with a proteolytic enzyme, such as pepsin, are described.
Patent PT-787963-E (PT)
Inventor: JAUME ANGLADA VINAS S A
IPC: D06B3/12
Filed: 1996-08-28
Abstract: An apparatus for the dry treatment of a fabric having two enclosures (2, 18) for stocks of fabric (4), and means for the gradual in-feed and drawing out of the fabric from the enclosures (2, 18). There are pneumatic means (48) blowing air into a passage (32a, 32b) which comprises a first portion (32a) communicating one enclosure (2) with a space (42) and a second portion (32b) communicating another enclosure (18) with the same space (42). A cylindrical drum (44) is located in this space and adapted to rotate alternately in both directions, such that the fabric (4) entering the space (42) through one of the portions (32a, 32b) leaves it through the other portion (32b, 32a), after partially wrapping the drum (44). <IMAGE>
Patent PT-836513-E (PT)
Inventor: LATTIN GARY A
IPC: A61N1/32
Filed: 1996-06-07
Abstract: An electrotransport agent delivery device ( 10 ) for delivering a therapeutic agent through intact skin, and a method of operating same, is provided. The device applies a pulsing electrotransport current wherein current pulses have a magnitude above a critical level (I<SUB>c</SUB>) at which the skin is transformed into a higher electrotransport delivery efficiency (E) state. Most preferably the length of the applied current pulses is at least 5 msec and preferably at least 10 msec.
Patent PT-886863-E (PT)
Inventor: HEILEGERS JOANNES HERMANUS
IPC: B65D85/86
Filed: 1996-11-20
Abstract: This invention relates to the use of a linear dialkyl peroxide having an hexyne or an hexene backbone, for producing a controlled rheology polypropylene heterophasic copolymer of melt index Ml2 larger than 15 g/10 min, having simultaneously a very high impact resistance and a high flexural modulus. <IMAGE>
Patent PT-986870-E (PT)
Inventor: GIROD RAOUL
IPC: H04K3/00
Filed: 1998-06-02
Abstract: The apparatus makes it possible to neutralize radio telephones, in spaces to be protected, by jamming the call signals or by modifying the communication signals. The variant embodiments of the apparatus are adapted so as to restrict the volume to be filtered and so as to select the filtering communications.
Patent PT-1002148-E (PT)
Inventor: CSONKA ISTVAN
IPC: D02J1/08
Filed: 1998-08-04
Abstract: The invention concerns a method for making industrial continuous filament yarn by entangling a polyester multifilament yarn at high temperature, under yarn traction force less than 140 cN. By means of a tangling cop tube consisting of a body (1) provided with a perforated plate (2) and a deflection plate (3), heat is directly transmitted to the polyester filament and the air passing through the cop tube body (1) is directly transmitted to a metal block (8) with high thermal conductivity directly connected to the deflection plate (3). In the device for implementing said method, the deflection plate (3) is directly connected to a metal block (8) with high thermal conductivity, wherein a bore (7) is provided for housing a heating element. The polyester continuous filament designed for spinning applications, with a yarn count of 500-2000 dtex, has a resistance of at least 70 cN/tex for a breaking elongation less than 24%, and a knot strength higher than 80% and a spacing between 2 knots more than 4.0 cm.
Patent PT-1017413-E (PT)
Inventor: SIKLOSI THOMAS
IPC: A61K47/18
Filed: 1998-09-23
Abstract: Stable interferon-beta (I) solution of neutral or slightly acid pH (pH 5-8) is new. Liquid formulations of human (I), that retain at least 80% of in vitro biological activity after storage for 3 months at 25 degrees Centigrade, contain up to 25 MU (units)/ml of (I), are buffered to pH 5-8, preferably over 5.5, and are free of human serum albumin (HSA); are buffered to pH 6-7.2 and are free of HSA, or are buffered to pH 5-8, preferably over 5.5, and contain at least one amino acid.
Patent PT-1113141-E (PT)
Inventor: SCHMIDT MICHAEL E
IPC: E05G1/024
Filed: 1999-12-10
Abstract: The armour plate (20) has a stainless steel plate (21), e.g. V2A, which has a ceramic layer (25) on at least one side. Preferably, the ceramic layer is made up of individual plates, which are glued to the stainless steel plate. The armour plate may have openings (22). An Independent claim is included for a safe or strong box.
Patent PT-1116214-E (PT)
Inventor: EYZAGUIRRE ADRIANA
IPC: G10H1/00
Filed: 1999-09-03
Abstract: A method and system are provided that allows a user to interactively compose music and create a video of an animated character that dances to the rhythm and beat of the composed music. To compose music, the user interactively selects and arranges a plurality of music samples for a plurality of instruments. Music samples are independent pieces of music that can be seamlessly looped to compose the musical work. A harmonizer program allows the user to hammonize the music samples that play simultaneously, thereby allowing the user to compose a music piece without knowledge or experience in musical theory or training. The user creates a video of an animated character that dances to the rhythm and beat of the music using an animation program. The animation program provides the user with a plurality of video clips from which the user can select and arrange to create the video. Once completed, the user can play, edit, and save the composed music and the video.
Patent SG-17392-G (SG)
Title: Space frames
IPC: E04B1/342
Filed: 1992-02-24
Abstract: PCT No. PCT/AU85/00114 Sec. 371 Date Jan. 23, 1986 Sec. 102(e) Date Jan. 23, 1986 PCT Filed May 30, 1985 PCT Pub. No. WO85/05650 PCT Pub. Date Dec. 19, 1985.In a space frame of the type having upper and lower grids of tubular longitudinal and lateral chord members, (10, 11), the nodes or intersections of chords (10, 11) of the upper and lower grid being interconnected by oblique struts (14), the chords (10, 11) are flattened at each intersection and overlapped, the struts (14), which are also tubular, being flattened and deformed at their ends to form attachment pads (15), bolts (17) connecting the attachment pads (15) and overlapped flattened chord sections (12) and also load distribution plates (19, 20, 21, 22) of which one (22) has side edges abutting against shoulders or abutments (16) on the struts (14) adjacent to the attachment pads (15), and others (19, 20, 21) have corner portions bearing on the ends of the top and bottom of the flattened sections (12) of the chord members.
Patent IE-41770-L (IE)
Title: Dispensing device.
IPC: B65D83/00
Filed: 1975-01-07
Abstract: A dispensing device, particularly for use in testing cows for mastitis, is adapted to be secured to the open neck of a flexible container having a supply of teat testing or treating liquid therein and consists of a plurality of independent upwardly opening cups connected to centrally located means for securing the cups to the open neck of the container. A conduit having a bore therein extends through the centrally located means and includes a free end located at an elevation above the cups. The conduit has at least one recess formed on its exterior surface and is surrounded by a cap at its free end, thereby to provide a path between the conduit and the cap for liquid in the container forced through the bore of the conduit by squeezing pressure. A plurality of channels extend from the conduit to the cup to receive this liquid and direct it into the respective cups. The flexible container, in addition to holding the reagent, also acts as a handle for the dispensing device attached to it.
[US3878831A]
Patent IE-900065-L (IE)
Title: Iodinated esters
IPC: C07D317/36
Filed: 1990-01-08
Abstract: PCT No. PCT/EP90/00053 Sec. 371 Date May 20, 1991 Sec. 102(e) Date May 20, 1991 PCT Filed Jan. 8, 1990 PCT Pub. No. WO90/07491 PCT Pub. Date Jul. 12, 1990.Water insoluble iodinated esters of formula (I), in which R1 is a substituted or unsubstituted C1-20 aliphatic, C7-20 araliphatic or C6-20 aryl group or a C1-20 heterocyclic group having one or more hetero atoms selected from O, S and N; R2 is hydrogen or a substituted or unsubstituted C1-6 aliphatic, C6-10 aryl or C7-20 araliphatic group; and R3 is a group as defined above for R1, which may be the same as or different from R1, or R2 and R3 together represent a substituted or unsubstituted C1-4 alkylene group, the molecule containing at least one iodine atom and being metabolisable to products which are soluble in body fluids and are physiologically acceptable. The esters are useful in X-ray and ultrasound imaging, especially liver and spleen imaging.