baber/WOPTO huggingface dataset:
Patent CN-1106296-A (CN)
Title: 营养补剂
Inventor: SCHNEIDER HEINZ
IPC: A23L33/00
Filed: 1994-09-07
Abstract: 通过给予营养补剂刺激HIV相关感染患者的免
疫系统的方法和ω-3-PUFA及与多胺的合成相关
的化合物在制造所述补剂方面的用途。
Patent CN-1132249-A (CN)
Inventor: BERNHARDT DIETER
IPC: A61L2/00
Filed: 1995-12-08
Abstract: 本发明涉及使用吖啶或吖啶衍生物，优选合用氯苄烷铵来灭活包膜或无包膜的病毒。优选地，在较大地保留所含蛋白生物活性下进行本发明方法。
Patent CN-1164386-A (CN)
Title: 白及空心胶囊
Inventor: ZHUANG SHAOBING
IPC: A61J3/07
Filed: 1996-05-03
Abstract: 白及空心胶囊，主要适用于配制医药胶囊制剂。是以包含有白及胶、碳水化合物类亲水胶、电解质等主要成分制成的，其制作方法为取包含有白及胶、碳水化合物类亲水胶、电解质等主成分，以及辅助成分加稀释剂进行溶胶，经模杆蘸胶后冷却干燥，脱模而成。本发明既有药物载体的作用，又有保护胃粘膜的作用，具有质量稳定，无化学污染，成本较低等特点，对中药的深层开发有很好的应用价值。
Patent CN-1171571-A (CN)
Inventor: MUELLER JACQUES
IPC: G04B37/22
Filed: 1997-05-16
Abstract: 本发明的组合件包括一个由硬塑料制成的表壳(2),在其中间部分有以廉宜成本制造的一个或多个密封的揿钮(5)。各揿钮包含:一个例如由制成表壳的硬塑料制成的表柄(10),和一个弹性体制成的弹性柄头(12),该柄头模制在该表壳(2)的外部表面(15)上。该表壳和该表柄可通过注射两种材料在一个单一模具中模制而成。本发明可应用于电子钟表或机械钟表上。
Patent CN-1177890-A (CN)
Inventor: TASUHIRO OHAYA
IPC: H04B1/10
Filed: 1997-07-26
Abstract: 一种寻呼机,包括:电源装置,开关装置,以及控制装置,控制装置指令开关装置在初始状态选择最低的电压电源,在预定时间后转到较高的电压电源。在频率变换电路中的信号失真,导致交叉调制的因素由切换频率变换装置的电源电压来避免。因此防止由于频率变换装置中交叉调制引起的接收可能性的降低。该开关装置在预定时间后回到初始状态,寻呼机的功耗被节省。如果衰减装置放置在放大装置之前,接收的可能性也可较好地改善。
Patent CN-1186133-A (CN)
Inventor: HASEGAWA IWAO
IPC: D03D47/34
Filed: 1997-11-20
Abstract: 一种流体喷射织机的喂纬装置,它设有在测长装置与流体喷射主喷嘴之间,以纬纱飞行速度为周速而转动的喂入辊,以及把纬纱夹持在该辊的圆周面上的、可离合的夹送辊,喂纬时使夹送辊压接在上述喂入辊上,积极地将纬纱送向主喷嘴一侧,其特征在于:使喂入辊表面摩擦系数大,夹送辊表面的摩擦系数很小,从而使纬纱以喂入辊的圆周速度送出。
Patent CN-1241321-A (CN)
Title: 具有电压馈逆变器的电源的电压调节方案
Inventor: CHIN CHANG
IPC: H05B41/24
Filed: 1998-08-07
Abstract: 本发明公开了一种电源,包括具有输出电压的谐振电路且振荡电流通过其中,以及电压馈半桥逆变器在连接到谐振电路的输出端产生源电压,逆变器响应驱动信号。驱动电路具有表示通过谐振电路振荡的被检测电流的第一输入,表示输出电压的第二输入,以及参考电压。驱动电路包括将输出电压保持在参考电压并控制相移角的补偿电路,以及移相电路基于被检测的电流的相移产生驱动信号,相移量由补偿电路控制。
Patent CN-1249669-A (CN)
Title: 搬运旅行箱和购物车等物品的装置
Inventor: DORNIER IREN
IPC: A47F1/12
Filed: 1998-03-04
Abstract: 本发明涉及到一个用于搬运购物车或类似物品的装置(1),装置带有电驱动的履带行走机构,履带(2)间隔距离的相互邻近设置。该行星齿轮减速器驱动的装置可以将购物车或类似随手携带的物品搬运到阶梯上去或搬运下来,在此履带(2)驶越阶梯的棱沿。
Patent CN-1275979-A (CN)
Title: 用作尿激酶抑制剂的异喹啉化合物
Inventor: BARBER C G
IPC: C07D409/04
Filed: 1998-10-05
Abstract: 本发明公开了式(Ⅰ)的化合物及其可药用盐,其中R 1 和R 2 之一是H,另一个是N=C(NH 2 ) 2 或NHC(=NH)NH 2 ,其它取代基如文中所定义,该化合物是尿激酶(uPA)抑制剂。
Patent CN-1257349-A (CN)
Title: 低抖动数据传输装置
Inventor: EIICHI OHAYASHI
IPC: H04L1/20
Filed: 1999-11-18
Abstract: 一种数据传输装置,用于限制由数字PLL(8)产生的传输时钟信号(16)的抖动量,该装置包括:用于分频接收时钟信号(4)的1/24时钟发生器(6);用于通过倍频1/24时钟发生器(6)的输出产生基准频率信号(18)的时钟倍频器(7);和用于控制时钟倍频器(7)的倍频比和控制在数字PLL(8)中提供的分频器的分频比的控制单元(28)。根据抖动检测信号发生器(19)检测的抖动量,在接收时钟信号频率的1/12、1/8和1/6中选择时钟信号(18)的频率。
Patent CN-1317967-A (CN)
Title: 蛋白质制剂
Inventor: RINELLA J V JR
IPC: A61K47/12
Filed: 1999-09-14
Abstract: 本发明公开含有药用肽或蛋白、疏水性防腐剂和烟酰胺的稳定的可溶制剂。所述保藏稳定的可溶制剂可用作多用途药用产品。
Patent CN-1318994-A (CN)
Title: 牙线
Inventor: PARK EDWARD H
IPC: A61C15/04
Filed: 1999-09-22
Abstract: 提供一种带有泡沫材料的牙线。最佳的牙线具有泡沫材料外层和增强芯子,以及可以制成多组元共挤压单丝。
Patent CR-20160246-A (CR)
Title: Junta de dilatación
Inventor: CALIXTO JORGE GABRIELLI ZACHARIAS
IPC: E04B1/68
Filed: 2014-10-31
Abstract: La junta de dilatación incluye: un perfil de estanqueidad (20), en elastómero, que tiene dos alas laterales (21) fijadas contra el lado hacia arriba de dos porciones de estructura (10) definidas a lo largo de un vano de dilatación (VD), estando las alas laterales unidas, en una pieza única, por una porción central (22); y un alma de refuerzo (30) en manta flexible, teniendo porciones laterales (31) y una porción media (32), asociadas al lado hacia abajo del perfil de estanqueidad (20).
Patent CR-20170284-A (CR)
Title: Agente acondicionador para un fertilizante particulado para reducir la higroscopicidad y formación de polvo
Inventor: TANDE TERJE
IPC: C05G5/12
Filed: 2015-11-25
Abstract: La presente invención se refiere a un agente acondicionador para reducir la absorción de agua y formación de polvo de un fertilizante particulado, que comprende 10 a 50% en peso de cera, 40 a 90% en peso de aceite mineral y 1 a 15% en peso de una resina que es soluble en aceite mineral y miscible con cera y aceite mineral, en donde el agente comprende adicionalmente 0.1 a 1% en peso de un elastómero viscoelástico seleccionado del grupo de poliisobutileno y copolímero de bloques de estireno-isopreno-estireno el cual es soluble en aceite mineral y tiene un peso molecular promedio de 30,000 a 5,000,000. La invención se refiere adicionalmente a una composición de fertilizante particulado, preferiblemente un fertilizante de urea-sulfato de amonio (UAS), un fertilizante de urea o un fertilizante de nitrato de calcio, que comprende un sustrato particulado, preferiblemente un fertilizante higroscópico, preferiblemente un fertilizante que contiene nitrógeno, y 0.05 a 2% en peso del revestimiento sobre este para reducir la absorción de humedad y formación de polvo del fertilizante.
Patent CR-20200251-A (CR)
Title: Til expansion from fine needle aspirates and small biopsies
Inventor: SIMPSON-ABELSON MICHELLE
IPC: C12N5/0783
Filed: 2018-11-19
Abstract: The present disclosure provides methods for expanding TIL populations from fine needle aspirates (FN As) or small biopsies which contain low numbers of TILs, using the methods disclosed herein including in a closed system that leads to improved phenotype and increased metabolic health of the TILs in a shorter time period.
Patent CR-20230146-A (CR)
Title: Moléculas de unión a b7-h4 terapéuticas
Inventor: REES DAVID GARETH
IPC: C07K16/28
Filed: 2021-09-10
Abstract: La presente invención se refiere a moléculas de unión (por ejemplo, anticuerpos) para el tratamiento del cáncer, y a conjugados de anticuerpo-fármaco relacionados.
Patent EC-SP003493-A (EC)
Title: Profarmacos mutuos de amlodipino y atorvastatina
Inventor: HAMANAKA ERNEST SEIICHI
IPC: A61K31/43
Filed: 2000-05-25
Abstract: Esta invención se refiere a los profármacos mutuos de amlodipino y atorvastatina ya las composicones farmacéuticas de los mismos. Esta invención también se refiere a los procedimientos para tratar la angina de pecho, la aterosclerosis y la hipertensión y la hiperlipidemia en un mamífero mediante el uso de estos profármacos y composiciones. Esta invención también se refiere a los procedimientos para tratar el riesgo cardiaco en un mamífero, incluyendo humanos, se presentan síntomas de riesgo cardiaco mediante la administración de estos profármacos y composiciones.
Patent EC-SP088899-A (EC)
Title: Derivados de 2-alcoxi-3,4,5-trihidroxi-alquilamida, su preparación, composiciones que las contienen y utilización
Inventor: ZHANG JIDONG
IPC: A61K31/423
Filed: 2008-11-21
Abstract: La presente invención se refiere particularmente a los derivados de 2-alcoxi-3,4,5-trihidroxi-alquilamidas, su preparación, composiciones que las contienen, y su utilización como medicamento, en particular como agentes anticancerosos.
Patent EC-SP105178-A (EC)
Inventor: CARTER CHRISTOPHER A
IPC: A61K31/505
Filed: 2010-02-18
Abstract: This invention relates to aryl urea compounds in combination with cytotoxic or cytostatic agents for use in treating raf kinase mediated diseases such as cancer.
Patent EC-SP961915-A (EC)
Title: Composicion fungicida amino cobre
Inventor: MILLER PERRASSE JORGE
IPC: C05G3/60
Filed: 1996-10-31
Abstract: Una suspensión coloidal acuosa de una sal cúprida y amoniaco comprendiendo 2 moles de amoniaco por mole de sal cúprica.
Patent FI-20040593-A (FI)
Inventor: MULLER GEORGE W
IPC: A61K31/33
Filed: 2004-04-27
Abstract: A process of preparing thalidomide in which N-phthaloylglutamine or N-phthaloylisoglutamine is cyclized with N,N'-carbonyldiimidazole, characterised in that the process comprises heating said N-phthaloylglutamine or N-phthaloylisoglutamine and N,N'-carbonyldiimidazole in refluxing anhydrous tetrahydrofuran.
Patent FI-20125497-A (FI)
Inventor: PITKAENEN TATU
IPC: B31F1/07
Filed: 2012-05-08
Abstract: Method and arrangement for adjusting the position of rolls (11, 12) forming a nip (N), in which one of the rolls (12) forming the nip is provided with sensor means (21) for measuring the force or pressure influencing in the nip (N) and the force or pressure measurement result is transmitted to a data processing system (15), which gives a control signal/control information based on which the position of the rolls (11, 12) in relation to each other is adjusted. The other one of the rolls (11) forming the nip (N) has a non-smooth surface.
Patent FR-1552994-A (FR)
IPC: B29C65/22
Filed: 1967-11-16
Granted: 1969-01-10
Abstract: 1,128,087. Seaming non-metallic sheet material. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 18 Nov., 1966, No. 51845/66. Heading B5K. Apparatus for thermally welding and severing thermoplastic films, e.g. polyethylene films, comprises a welding device 10 and a welding base 11 engageable with each other to weld and sever thermoplastic films between them, the welding face of the device 10 being formed by a sheet 13 of heat-resistant non-sticking material stretched over an electrically heatable element 12 and having at least one side 15 sloping relative to the films and the welding face of the base 11 being formed by a sheet 14 of heat resistant non-sticking material which is supported in a non-elastic manner. Preferably, the sheets 13, 14 are made of glass-fibre reinforced polytetrafluoroethylene and a sheet 20 of this material is laid between the element 12, comprising an electrical resistance wire, and the body 16 of the device 10. As shown, both sides 15 of the sheet 13 slope relative to the films. The body 17 of the base 11 is made of metal or other hard material not deformed by by the pressures applied during welding and severing. The body 17 may be heated, e.g. by electrical heating elements therein or between the body 17 and the sheet 14 or by circulating a hot fluid through passages therein. Alternatively, the base 11 may be provided with means for cooling the body 17. The device 10 and the base 11 are movable towards and away from each other either manually or mechanically.
Patent FR-1575661-A (FR)
IPC: A61C5/77
Filed: 1968-04-03
Granted: 1969-07-25
Abstract: 1,223,007. Refractory compositions. CERAMCO INDUSTRIAL PRODUCTS CORP. 3 April, 1968 [3 April, 1967], No. 15954/68. Heading C1J. A medium for use in separating a porcelain prosthesis from a ceramic die comprises a suspension of a refractory powder, not wetted by fused porcelain, in an evaporating vehicle containing in solution a cellulosic ester and, optionally, a lower alkyl acetate, the weight volume ratio of refractory to ester 11À1-14À3 to 1. Specified are refractories: mica, talc, alumina, magnesia; ester: nitrate; vehicle: acetone; and acetate: amyl, butyl or ethyl.
Patent FR-1605124-A (FR)
Title: Benzamide fungicides - applied by vaporisation with a cyanamide
IPC: A01N37/40
Filed: 1967-01-27
Granted: 1973-03-16
Abstract: The fungicides are of formula (I): where R1 = OH, OCH, OCOCH3 or OCOOCH3, R2 = OH, Cl or Br R3 = H, CH3, C2H5, CnH2n+1 or furfuryl or R2 = substd. phenyl. They applied by vaporising a mixture of (I) and a cyanamide deriv. opt. with NH4NO3. IN addition (I), R1=o-OH, R2=p-OH may be applied as an emulsion by spraying etc.
Patent GB-1050915-A (GB)
IPC: C08G77/00
Abstract: 1,050,915. Di- and tri-siloxanes; amine complexes. GENERAL ELECTRIC CO. Oct. 4, 1963 [Nov. 1, 1962], No. 39117/63. Heading C3S. Siloxanes of formula HO-Si(C 6 H 5 ) 2 -O] n -H where n is 2 or 3 are purified by forming novel complexes with an amine consisting of carbon, hydrogen and nitrogen, and decomposing the product, e.g. by heat or acid. The amine may be primary, secondary or tertiary, may be a mono- or poly-amine and may be heterocyclic ; suitable amines are specified. The siloxane may be the hydrolysis product of (C 6 H 5 ) 2 SiX 2  where X is halogen, acyloxy, alkoxy or aryloxy. The amine complexes may be converted to cyclic siloxanes by reacting with, for example, (CH 3 ) 2 SiCl 2  or (C 6 H 5 ) 2 SiCl 2 .
Patent GB-1051167-A (GB)
IPC: A23L9/20
Abstract: 1,051,167. Confectionery toppings. UNILEVER Ltd. Sept. 27, 1963 [Oct. 1, 1962], No. 38209/63. Heading A2B. A confectionery topping composition stable under conditions of a wide range of storage temperatures e.g. between -23‹C. and + 21‹C., contains 15-40% by weight of fat having a capillary melting point of 35‹-40‹C., 0.1-3% by weight of casein or a calcium or alkali metal caseinate, and 0.1-2% by weight of a mixture of phosphoric acid esters of fatty acid mono- and/or diglycerides of fats having an average iodine value of 30 to 70. The composition preferably includes also 0.1- 0.5% by weight of a polyoxyethylene sorbitan ester of a saturated higher fatty acid (e.g. mono- or tristearate of tripalmitate), a sweetening agent such as sugar, corn sugar, lactose, saccharin or cyclamate, carboxymethylcellulose, a pre-gelatinized starch, an alkaline earth metal halide (calcium chloride), flavouring and colouring agents, and sufficient of an edible acid (e.g. citric, tartaric or lactic acid) for adjusting the pH to within the range 5.0- 5.7. The composition, in the form of an aqueous emulsion and containing a soluble pressurizing gas, may be confined in an aerosol container under super-atmospheric pressure. Suitable fats include partially hydrolysed soybean oil of iodine value about 80. partially hydrogenated coconut oil of iodine value 74, and mixtures of fully hydrogenated coconut oil and partially hydrogenated cottonseed oil having an iodine value of 65. The mixtures of phosphoric acid esters may be obtained either by reacting a phosphorylating agent such as phosphorus pentoxide, phosphorus oxychloride or pyrophosphoric acid with fatty mono- and/or diglycerides obtained by super-glycerinating a fat having an iodine value within the range of 30 to 70, or by mixing the phosphoric acid esters prepared by separately converting saturated and unsaturated fatty mono- and/or diglycerides into their phosphoric acid esters (the saturated glycerides resulting from superglycerination of a fat having an iodine value from about 30 down to complete saturation of 1 or less and the unsaturated mixture resulting from super-glycerination of a fat having an iodine value of 70 or above), the proportion of saturated to unsaturated components in the mixture of phosphoric acid esters normally being in the range 3:1 to 1:3. Suitable source materials are cottonseed oil and lard. The compositions may be prepared by mixing the casein material with the mixture of phosphoric acid esters in the presence of water, mixing the resultant product with the fat and making an aqueous emulsion of the mixture. According to the Examples, an exemplary confectionery topping composition was packed at the rate of 9¢ oz. in a 16 oz. can and was pressurized with 7g of a mixture of 85% nitrous oxide with 15% carbon dioxide. This packed formulation, when discharged from the can, had excellent foam, flavour and texture. In an alternative procedure, 2-3g of octafluorocyclobutene was used in part replacement of the nitrous oxide-carbon dioxide admixture.
Patent GB-1054519-A (GB)
IPC: C30B25/02
Abstract: 1,054,519. Silicon carbide. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 29, 1965 [Dec. 12, 1964], No. 50565/65. Addition to 1.039.748. Heading C1A. A SiC crystal is grown epitaxially by decomposing a mixture of a silane and hydrocarbon on a Si substrate heated to above the pyrolitic decomposition temperature of the mixture. The Si substrate may be dissolved away, e.g. in a HF and HCl mixture. The substrate may be heated to 1300 C. and the reaction carried out at a pressure of 10<SP>-2</SP> to 1 torr. Specified reactants are SiH 4  and C 3 H 8 .
Patent GB-1143683-A (GB)
IPC: G01G1/24
Abstract: 1,143,683. Weighing apparatus. SARTORIUS-WERKE A.G. Nov.11, 1966 [Feb.18, 1966], No.50724/66. Heading G1W . A precision balance comprising a pivotally mounted beam 3 on which is mounted a support 7 carrying a scale pan 8 is provided with a parallel motion linkage 10 which ensures vertical movement of the support 7 when the beam 3 tilts, the linkage 10 comprising two flexible elements which interconnect bearing mountings 12, 14 and which are arranged in a plane parallel to the plane in which the beam 3 is pivotally movable. Knife edges 30, 36 which are adjustably mounted on the frame 28 of the balance and the support 7, respectively, are arranged to bear on bearings 16, 18 supported by the mountings 12, 14. The disposition of the pan 8 on the support 7 ensures that the two flexible elements which are constituted by a wire 20 are always in tension and by adjusting screws 26 which bear on leaf-springs (24) Fig. 2 (not shown) to which the ends of the wire 20 are attached, tensioning adjustments can be effected.
Patent GB-1225111-A (GB)
IPC: G21F1/10
Filed: 1966-03-30
Abstract: 1,225,111. Radiation absorbing materials. J.-F. MENKE, and L. WESCH. 30 March, 1966, No. 14193/66. Heading G6R. A nuclear and thermal radiation shielding material comprises layers incorporating glass fibre reinforced plastics material. A filler is included comprising tungsten, thorium, iron and barium, up to 30% and rare earths up to 25%. Boron, graphite and hydrocarbon resins and the hydride of barium and lead are added to some of the plates. SiO 2  may be used in place of the glass fibre to provide a greater heat resistance. Dielectric and magnetic fillers may be added and chambers interposed between the solid layers, containing a mixture of light and heavy water with salts of the rare earths dissolved therein.
Patent GB-1225486-A (GB)
IPC: H02J7/24
Filed: 1967-05-15
Abstract: 1,225,486. Soldering. JOSEPH LUCAS (INDUSTRIES) Ltd. 18 April, 1968 [15 May, 1967], No. 32620/70. Divided out of 1,225,485. Heading B3R. [Also in Division H2] An electrical connector for use in interconnecting electrical components comprises a lamina 37 having a pair of similar end portions 37a to engage the components, the end portions being joined by an integral intermediate portion incorporating a neck portion 37c and the end portions having surfaces formed as arcs of a circle. A voltage regulator for use with an alternator on a road vehicle is made by printing on a substrate 31 a thick film circuit with conductive areas which receive one plate of a first capacitor, one plate of a second capacitor, the collectors of three transistors, the anode of a diode and the anode of a Zener diode. The substrate 31 is placed on a holder 32 and a mask 33 is located on the holder leaving windows to receive the components, solder is printed on the thick film or preformed solder parts are placed in the windows and the components are placed in the windows in contact with the solder. Connections are required from diode components to the printed circuit and from component to component and to effect these connections a second mask 34 is located on mask 33 by pins 35. Laminµ 37 each having arcuate end portions 37a joined by an intermediate portion 37b are arranged in slits in the mask 34 to extend between components in the mask 33 and areas on the printed circuit. Where the laminµ contact the printed circuit solder can be printed on the circuit and where the laminµ contact a component solder as cream or as an insert is placed between the laminµ and component. The assembly is heated to melt the solder and form connections between the laminµ and components and between the component printed circuits.
Patent GB-1225550-A (GB)
IPC: C08L21/00
Filed: 1968-11-11
Abstract: 1,225,550. Phenolic resin-reinforced rubber. CHEMISCHE WERKE ALBERT. 11 Nov., 1968 [14 Nov., 1967], No. 53374/68. Headings C3P and C3Q. A natural or synthetic rubber is reinforced by the incorporation therein of a mixture of a novolak and a resole resin and the vulcanization thereof in the absence of a methylene donor. The composition may contain the usual fillers, vulcanizing agents, and promoters of "resin cures".
Patent GB-1228315-A (GB)
IPC: H02B1/044
Filed: 1969-05-23
Abstract: 1,228,315. Latch fastenings. SIEMENSELECTROGERATE G.m.b.H. 23 May, 1969 [19 Sept., 1968], No. 26571/69. Heading E2A. [Also in Division H1] Means for securing an electric switch 4 having a switch housing 5 to a mounting surface 1 such as a switch panel of an electric cooker, comprises retaining members 2 projecting from surface 1 which interlock with associated parts of housing 5, members 2 being freely projecting tabs 3 formed with recesses and having their free ends facing towards one another, tabs 3 being secured to or bent out of mounting surface 1, the associated parts of housing 5 having projecting portions 6 engaging behind tabs 3, the switch being secured in position by a biassed leaf spring 10 fitted between mounting surface 1 and housing 5. Switch 4 has an end plate 6 which has stamped impressions 8 with bent-up parts 9 which locate in openended recesses in tabs 3, leaf spring 10 fits over switch spindle 7 and has bent-up parts 11 located in end-plate 6 to prevent rotation and has bent-up parts 12 to limit tilting movement of the switch housing.
Patent GB-1228640-A (GB)
IPC: D01F8/14
Filed: 1968-10-10
Abstract: 1,228,640. Yarn consisting of composite polyester filaments. TORAY INDUSTRIES Inc. 10 Oct., 1968, No. 48174/68. Heading B5B. A yarn consisting of a number of composite filaments each of the conjugate type or the eccentric sheath core type and each consisting of two thermoplastic high polymer components is characterized in that each filament develops more than 16 crimps per cm. after treatment with coiling water, the apparent shrinkage of each crimped filament when treated with boiling water is in the range 30 to 65%, and the true shrinkage of each crimped filament when heated to 160 C. is less than 10À0%. The high polymers may be polyesters and they may differ from one another in intrinsic viscosity by more than 0À05. The contraction stress of each crimped filament when heated in a bath of a silicone maintained at 180 C. is less than 120 mg./denier. One of the two polyesters preferably has an intrinsic viscosity within the range 0À45 to 0À55 and the other within the range 0À60 to 0À85. The composite filaments may be produced by melt spinning the polyesters at a temperature of 290 to 300 C. in such a manner that the filaments formed are of either the eccentric sheath-core type or preferably of the conjugate side-by-side or "bimetal" type. The molten extruded composite filaments are cooled and solidified by means of a flow of cooled air and wound up to form a package at a tension higher than 0À15 g./denier the multifilament yarn thus obtained is drawn at a draw ratio of 3À0 to 3À8 using either a plate maintained at a temperature between room temperature and 180 C. a snubbing pin maintained at a temperature between the glass transition temperature of the polyester and 160  C. The drawn yarn is passed through a tube maintained at a temperature within the range 130 to 240 C., preferably 200 to 230 C. During its passage through the heated tube the yarn is allowed to relax 10 to 70%, preferably about 20%. This heat treatment causes the filaments of the yarn to develop helical crimps. The pairs of polyesters used in the examples are polyethylene terephthalates having intrinsic viscosities of 0À50 and 0À80 respectively and polyethylene terephthalate of intrinsic viscosity of 0À48 used in conjunction with polyparaoxyethylene benzoate having an intrinsic viscosity of 0À56. The intrinsic viscosities of the polyesters are determined at 25 C. using o-chlorophenol as the solvent. The number of crimps per cm. of the crimped filament is measured under a load of 1 mg./denier. The apparent per cent shrinkage is also measured under this load, the yarn having been immersed in water at 98 C. for 15 minutes under no tension. The apparent shrinkage is measured under a load of 200 mg./denier, the yarn having been subjected to dry heat at 160 C. under no tension. The contraction stress is measured with a strain meter using a crimped yarn loaded with a weight of 1/30 g./denier and immersed in a silicone oil bath at 180 C.