baber/WOPTO huggingface dataset:
Patent CN-1189865-A (CN)
Inventor: BRADSHAW T I
IPC: E01F9/50
Filed: 1996-06-27
Abstract: 本发明揭示了逆反射路面标志材料(10),它包括在其顶面上的外露透镜式逆反射片(12),该片是含有许多逆反射元件的单层,单层的许多第一部分排列成外形伸出的断面(18),单层的许多第二部分排列在较低基本为平面的位置(20)上。
Patent CN-1189863-A (CN)
Title: 漂白织物的方法
Inventor: AGOSTINI A
IPC: D06L4/00
Filed: 1996-04-19
Abstract: 本发明涉及用含次氯酸盐的组合物漂白织物。对使用次氯酸盐漂白剂漂白合成织物,由于所得到的织物泛黄而产生的对使用次氯酸盐的公知偏见由在漂白介质中存在硅酸盐得以解决。
Patent CN-1211436-A (CN)
Inventor: CHENG WEIYU
IPC: A61P15/00
Filed: 1997-09-18
Abstract: 本发明公开了一种防治药物流产后出血副反应的药物,属于含有中药成份的医药配制品。本药物由当归、川芎、红花、益母草、蒲黄、五灵脂、枳壳、刘寄奴、炮姜、炙甘草、水煎成汤剂;也可低温浓缩后乙醇纯化,减压蒸馏法回收乙醇加防腐剂制成口服液;还可低温浓缩后加赋形剂制成干颗粒剂型。经试用出血时间缩短、出血量减少、腹痛症状减轻。
Patent CN-1194855-A (CN)
Inventor: GUO ZHENWU
IPC: A61K9/16
Filed: 1998-05-08
Abstract: 本发明涉及可用于治疗胆、胰和胃三种慢性炎症的中药制剂。其主料有柴胡、大黄、黄连、黄芩;辅料中包括陈皮、枳壳、郁金、元胡、木香、香附和金钱草等按比例经粉碎、浸泡、煎煮、过滤、压榨药渣、合并滤液、醇洗、浓缩以及制粒、干燥等工艺程序制成胆、胰和胃冲剂。该药可同时医治慢性胆囊炎,慢性胃炎和慢性胰腺炎,且经临床证明,疗效显著。
Patent CN-1264068-A (CN)
Title: 散热风扇的延迟关闭装置
Inventor: HUANG YONGXIN
IPC: G06F1/20
Filed: 1999-02-02
Abstract: 本发明涉及一种散热风扇的延迟关闭装置,其设于一电源供应器内部,电源供应器包括一主电源系统、一常备电源系统、一用来开启或关闭主电源系统的开关控制电路及一散热风扇,其特点是:当主电源系统被关闭时,常备电源系统仍持续运作以供应远端开关控制电路运作所需电源,散热风扇运作所需的电源改由常备电源系统提供而可继续动作,以将电源供应器内部的余热排出,降低温度,而可延长电源供应器内部的电子零件的寿命及提升其可靠度。
Patent CN-1245825-A (CN)
Title: 润滑油添加剂及其制作方法
Inventor: YANG HAIBIN
IPC: C10M125/04
Filed: 1999-04-16
Abstract: 本发明属车用润滑油添加剂及其制作方法。其组份包括基础润滑油,金属或合金微粒、分散剂、抗氧抗腐剂、抗泡剂等,金属或合金微粉的粒度为20～200nm。将上述组份按一定比例混合后经球磨均化处理制得成品。本发明的润滑油添加剂兑入机油内,能对磨损部位进行自修复,从而提高发动机的输出功率、增大缸压、大幅度降低排放尾气中的有毒化合物、减小摩擦、增强表面耐磨功能、降低噪音、提高启动性能、延长使用寿命。
Patent CR-20130515-A (CR)
Title: Imidazopiridazinas como inhibidores de quinasa akt
Inventor: Bärfacker Lars
IPC: C07D487/04
Filed: 2013-10-07
Abstract: Imidazopiridazinas de fórmula (I), un proceso para su producción y el uso de las mismas.
Patent CR-20150093-A (CR)
Title: Composiciones herbicidas que comprenden ácido 4-amino-3-cloro-5-fluoro-6-(4-cloro-2-fluoro-3-metoxifenil) piridin-2-carboxílico o un derivado del mismo y herbicidas de auxina sintética
Inventor: YERKES CARLA N
IPC: A01N43/40
Filed: 2015-02-24
Abstract: En la presente se dan a conocer composiciones herbicidas y métodos para controlar la vegetación perjudicial que utilizan (a) un compuesto de la fórmula (I).
Patent CR-20170572-A (CR)
Title: Compuestos tricíclicos y su uso como inhibidores de la fosfodiesterasa
Inventor: PATEL NANDINI CHATURBHAI
IPC: C07D513/14
Filed: 2016-06-09
Abstract: La presente invención se refiere a compuestos de la Fórmula I:o una sal farmacéuticamente aceptable del mismo, en donde los sustituyentes A, R1, R2, R3a, R3b, R4a, R4b y n son como se define en el presente documento. Las invenciones también se refieren a composiciones farmacéuticas que comprenden los compuestos, métodos de tratamiento que usan los compuestos y métodos de preparación de los compuestos
Patent CR-20180237-A (CR)
Title: MEZCLA FUNGICIDA QUE COMPRENDE UN FUNGICIDA CON FÓRMULA I A V Y CLOROTALONILO (Divisional 2012-0195)
Inventor: YAO CHENGLIN;
IPC: C07D405/14
Filed: 2010-10-06
Abstract: Se describe una composición fungicida que contiene una cantidad fungicidamente efectiva de un compuesto de fórmula (I-V) y clorotalonilo, que proporciona el control sinergístico de los hongos seleccionados.
Patent CR-20190199-A (CR)
Title: Anti-pd-1(cd279) antibodies
Inventor: HARDING FIONA A
IPC: C07K16/30
Filed: 2017-09-14
Abstract: The present disclosure provides novel anti-PD-1 antibodies, compositions including the new antibodies, nucleic acids encoding the antibodies, and methods of making and using the same.La presente divulgación provee nuevos anticuerpos anti-PD-1, composiciones que incluyen los nuevos anticuerpos, ácidos nucleicos que codifican los anticuerpos, y métodos para la elaboración y uso de los mismos
Patent CR-20210503-A (CR)
Title: Hair implants comprising enhanced anchoring and medical safety features
Inventor: LORIA VICTOR
IPC: A61F2/10
Filed: 2020-02-28
Abstract: A hair implant suitable for subcutaneous implantation is provided having an anchor comprising an anchor body, and at least one collagen receiving structure selected from the group consisting of at least one tunnel disposed through the anchor body and an external surface feature of the anchor body. The anchor further comprises at least one hair strand projecting from a distal end of the anchor body, wherein the at least one collagen receiving structure is configured to support collagen ligature growth after subcutaneous implantation of the hair implant to anchor the anchor to a hair implant recipient, and the collagen receiving structure is free of hair. A fracture line in the anchor body allows the body to fragment, thereby releasing collagen ligatures and allowing the implant fragments to "release" and fall out of the skin. The at least one hair strand may comprise a primary hair element with emerging hair elements.
Patent CR-20210638-A (CR)
Title: Apparatus for monitoring valve expansion
Inventor: WITZMAN OFIR
IPC: A61M25/00
Filed: 2021-02-18
Abstract: Embodiments of a prosthetic valve delivery apparatus are disclosed. The delivery apparatus can include an indicator arm changeable between a first configuration and a second configuration. The second configuration is different from the first configuration in location or shape of the indicator arm. The indicator arm can be configured to remain in the first configuration when a diameter of the prosthetic valve is smaller than a first predetermined size, and change to the second configuration when the diameter of the prosthetic valve is expanded to the first predetermined size.
Patent CR-20220568-A (CR)
Title: 4-(2,6-difluorophenoxy)-6-(trifluoromethyl)pyri ml din-2 -amine derivatives as potentiators of th hmrgx1 receptor for the treatment of pain
Inventor: SMITH DARYL LYNN
IPC: C07D239/46
Filed: 2021-04-30
Abstract: is: or a pharmaceutically acceptable salt thereof, useful for treating pain, including chronic pain, chronic lower back pain, diabetic peripheral neuropathic pain, and osteoarthritis pain.
Patent EC-SP066702-A (EC)
Title: Aparato y método para enfriar moldes para máquina formadora de cristalería
Inventor: LEIDY WAYNE D
IPC: C03B9/353
Filed: 2006-07-14
Abstract: En el lado de moldeo de preformas de una máquina formadora de Recipientes de vidrio, tipo I.S., circula aire de enfriamiento para moldes, que proviene de un fuente fija, a través de un conducto de suministro con trayectoria hacia un plenum que cabe por debajo y oscila junto a un brazo portador de moldes. El aire de enfriamiento que sale de la fuente circula hacia arriba desde el conducto de suministro y luego hacia un componente hueco que cuenta con una parte de entrada que es telescópicamente embutida dentro de una salida del conducto de suministro. El componente hueco, que está dotado de movimiento oscilatorio en un plano horizontal con respecto al conducto de suministro, tiene una cara horizontal dotada de una superficie anular de apoyo en parte esférica, y de un cojinete anular en parte esférico ubicado en la superficie de apoyo en parte esférica con el fin de otorgar movimiento pivotal dentro de un plano vertical al cojinete en parte esférico con respecto al componente hueco. Un tubo de ingreso de aire de enfriamiento cuenta con un extremo de entrada que está telescópicamente embutido dentro del cojinete en parte esférico. El extremo de salida del tubo de ingreso del aire de enfriamiento no está embutido telescópicamente en una superficie de apoyo en parte esférica del plenum. En el lado de moldeo al soplado de una máquina formadora de recipientes de vidrio I.S., el aire de enfriamiento circula desde una fuente fija, a través de un conducto de suministro, hacia un plenum que cabe por debajo y oscila junto con un brazo portador de moldes, sin que se produzca ningún cambio sustancial en la dirección de la trayectoria de aire a través del mismo. Un tubo de ingreso de aire de enfriamiento que tiene un elemento externo y un elemento interno que está telescópicamente embutido dentro del elemento externo, viene dotado de un resorte para repeler, a través de resiliencia, al elemento interno y al elemento externo, uno con respecto al otro, con el fin de acomodar los cambios en distancia que se producen entre la fuente y el plenum a causa del movimiento oscilatorio del brazo portador de moldes.
Patent EC-SP099225-A (EC)
Title: Compuestos antagonistas del receptor de glucagón, composiciones que contienen dichos compuestos y procedimientos de uso
Inventor: TATA JAMES R
IPC: A61K31/404
Filed: 2009-04-03
Abstract: Se describen compuestos antagonistas del receptor de glucagón. Los compuestos son útiles para tratar diabetes tipo 2 y estados patológicos relacionados. También se incluyen composiciones farmacéuticas y procedimientos de tratamiento
Patent EC-SP972303-A (EC)
Title: 2- ciano pirrolidinas n- sustituidas
Inventor: VILLHAUER EDWIN BERNARD
IPC: C07D401/12
Filed: 1997-11-05
Abstract: Las N-(glicilo N- sustituído)-2-cianopirrolidinas, por ejemplo, los compuestos de la fórmula I (gráfico), en donde R tiene diferentes significados, son novedosas, Estas inhiben la actividad de DPP-IV (dipeptidilpeptidasa-IV). Por consiguientes, se indican para utilizarse como productos farmacéuticos en la inhibición de DPP IV, y en tratamiento de condiciones mediadas por DPP-IV, tales como diabetis mellitus no dependiente de insulina, artritis, obesidad, osteoporosis y otras condiciones de mala tolerancia a la glucosa.
Patent EC-SP972332-A (EC)
Title: Derivados de 6-fenilpiridil -2-amina
Inventor: ADAMS LOWE JOHN
IPC: A61K31/43
Filed: 1997-12-04
Abstract: La presente invención se refiere a derivados de 6-fenil -piridin-2-ilamina de fórmula (gráfico), en la que G, R1 y R2 se definen en la memoria descriptiva, que presentan actividad como inhibidores de la óxido nítrico sintetasa (NOS), a composiciones farmacéuticas que contienen y a su uso en el tratamiento y prevención de trastornos del sistema nervioso central y otros trastornos.
Patent EC-SP982438-A (EC)
Title: Metodo para generacion para cultivo de celulas embriogeneticas para produccion de bananas transgeneticas
Inventor: SCHOOFS HILDE MARIA EMMY
IPC: C12N15/82
Filed: 1998-03-28
Abstract: La presente invención se relaciona con un método de regeneración de plantas, que comprende el suministro de un material que brota con la regeneración y la regeneración de plantas del material comenzado; donde el suministro del material que inicia, preferiblemente comprende la combinación de selecciones rigurosas para tejidos meristemáticos altos con meristemas en vitro proliferados, en la presencia de citocines en una concentración de al menos 50uM, preferiblemente al menos 100uM para obtener células en suspensión. El paso de la regeneración de plantas en este método es preferiblemente iniciado por inducción de embriogenia somática de células en suspención de medios semisólidos. El paso de inducción puede también ser usado con otros métodos de preparación se suspensión de células.
Patent EC-SP982761-A (EC)
Title: Composiciones celecoxib
Inventor: VAUGHN MARGARET B WOODHULL
IPC: A61K9/20
Filed: 1998-11-30
Abstract: El invento se relaciona con composiciones farmacéuticas orales útiles en el tratamiento de ciclooxigenasa-2-, condiciones mediana y/o desórdenes que comprende un agente activo de celecoxib en una cantidad desde aproximadamente 10 mg a aproximadamente 1000mg y uno o más materiales portadores.
Patent FI-20020076-A (FI)
Inventor: KURJENHEIMO TIMO
IPC: H01Q9/04
Filed: 2002-01-15
Abstract: The invention relates to a terminal employing wireless data transfer, comprising an enclosure structure consisting of at least one enclosure part (30), (40), (50), (60), an antenna (80) and a feed conductor (92) for receiving a signal from the antenna and/or feeding a signal into the antenna. By applying the invention, a device construction is achieved that makes it possible to improve the EMC properties of the device in a simple way and to improve the electric performance of the antenna of the device, especially to increase the frequency band of the antenna. <IMAGE>
Patent FI-20060703-A (FI)
Inventor: TIEDEMANN EDWARD G JR
IPC: H04B7/005
Filed: 2006-07-28
Abstract: A system and method for adjusting forward traffic channel power allocation in a communications system, wherein signal qualities of pilot channels respectively transmitted by multiple base stations in an active set of a mobile station, are measured by the mobile station, compared to a signal quality standard, and the comparison results reported to a system controller, thereby to indicate which of the pilots at the mobile station surpass the standard. The system controller then adjusts the forward channel power allocation based on the comparison results.
Patent FI-20125312-A (FI)
Inventor: KETTUNEN VEIKKO
IPC: A01G23/091
Filed: 2012-03-20
Abstract: The invention relates to a lubricating system (30; 50) for lubricating an implement (21) to be lubricated in the boom system (11) of a working machine (10), the system comprising a lubricant source (31; 51) which can be installed in a base machine (40) for the working machine (10) and coupled to the implement (21) to be lubricated. The lubricating system (30; 50) further comprises a dispensing unit (33; 53) which can be connected to the implement (21) to be lubricated, for dispensing lubricant to the implement (21) to be lubricated. The invention also relates to a working machine (10) comprising such a lubricating system (30; 50).
Patent FR-1586706-A (FR)
IPC: G06F12/02
Filed: 1968-09-19
Granted: 1970-02-27
Abstract: An active memory for use in data processing apparatus for storing information data relating to a system defined by several parameters, each capable of taking a finite number of values, called situations. Each of these situations may be changed in value by a finite number of variations, called actions. For each parameter, a recording center is provided consisting of a matrix having two dimensions, one of which is allocated to the situations (i.e., the values of the parameters) and the other to the actions (that is, the change in value of the parameters). The parameters together are joined by at least one center of Association of Situations or a Center of Association of Actions. These centers are formed of matrices having storage elements the inputs of which correspond to the situations or to the actions, respectively, to be joined. Upon interrogation of the memory, an output will be provided indicating the shortest path (if a path exists) between an initial and a final situation-that is, the memory will supply the shortest transformation making such a connection possible.
Patent GB-1047430-A (GB)
IPC: F01C19/10
Abstract: 1,047,430. Rotary-piston engines. KLOCKNER-HUMBOLDT-DEUTZ A.G. Sept. 4, 1963 [Sept. 24, 1962], No. 34954/63. Heading F1F. In a rotary-piston internal-combustion engine of the trochoidal n and n +1 lobe type, radial sealing-strips 15 (Fig. 3, not shown) on the piston 16 can be removed through an opening in the peripheral wall of an associated enclosing body 17, said opening being normally filled by an insert 18 which comprises a plurality of circumferentially-orientated bars to define inlet or suction openings 19 (Fig. 4, not shown) for working spaces between the piston and said wall. Sealing of the insert 18 relative to the body 17 is effected by a plurality of intermeshing teeth 20 (Figs. 5 and 6, not shown) formed thereon. The engine may comprise a plurality of pistons lodged in a housing 2 (Fig. 1, not shown) which is supported by a beam 1, bearing 4 for a common power-output shaft being aligned with one another by a longitudinally-orientated bar 9 (Fig. 2, not shown) on one side of said beam. Cover bands 13 in the housing are attached at their ends 14 to the beam 1 and define with the body 17 associated with each piston spaces for cooling-water.
Patent GB-1050358-A (GB)
IPC: B29C43/12
Abstract: 1,050,358. Drawing articles from thermoplastic blanks. PLASTIC CAN CORPORATION. Oct. 1, 1964 [Oct. 1, 1963], No. 39952/64. Heading B5A. [Also in Divisions B8 and H5] A hollow article is formed from a heated blank 21, of synthetic plastics material, by clamping the blank about the mouth of a split mould 30, 32, drawing the blank using cooperating heated plungers 92, 60 and finally expanding the drawn blank into conformity with the mould. During the co-ordinated drawing movement of the plungers, the upper plunger 92 is moved relatively towards the lower plunger 60 to express material from therebetween, which material forms the lower regions of the wall of the finished container and has a high degree of molecular orientation imparted thereto. The final separation of the two plungers determines the ultimate wall and bottom thickness of the finished article. The blank may be expanded by a pressure fluid, e.g. air, an expandable bag of e.g. polyurethane (see Figs. 14, 15, not shown), or by a deformable solid, e.g. rubber, carried about the lower plunger as in Figs. 16 and 17 (not shown). The blank may carry already formed ports at its periphery (Figs. 28 and 19, not shown), which ports are not drawn but are clamped under slight pressure to impart a small degree of orientation thereto and are retained upon the finished article in a substantially unaltered state. The face of each plunger comprises a smooth metal cover 116, separated by a film of low heat conductive material 123 from high frequency resistance wires 118, themselves embedded in a cloth of e.g. P.T.F.E. 119 which is separated by a layer of glass cloth 121 from the body of the plunger (Fig. 13, not shown).
Patent GB-1052684-A (GB)
IPC: H04L27/14
Abstract: 1,052,684. Telegraphy; transistor pulse circuits. GENERAL ELECTRIC CO. Ltd. Dec 17, 1964 [July 3, 1964], No. 27553/64. Headings H3T and H4P. In a frequency shift receiver comprising a discriminator which responds to only one of the shift frequencies bi-stable circuit 5 is triggered between its two stable states in dependence upon the instantaneous amplitude of the signal from amplifier 4, provided that the amplitude of the received signal fed to amplifier 4 exceeds a certain value, whereby a constant amplitude two-frequency square wave is obtained. After filtering, the received signal passes to the bi-stable circuit 5 via amplifier 4 which includes a feedback loop comprising diodes and capacitor 13-15 in order to limit the amplitude of its output. When the output of amplifier 4 exceeds the knee of the diodes, substantial current passes in the loop, to reduce the output voltage. The gain of the amplifier 4 is such that if the amplitude of the received signal is below a certain value its output is insufficient to trigger the bi-stable circuit 5. The output of bi-stable circuit 5 is filtered of harmonics by unit 6 and feeds discriminator 7 which responds to only one of the received shift frequencies. Circuit 25. 26 is resonant at a frequency somewhat higher than the higher shift frequency so that the peak amplitude of the signal at the base of transistor 22 depends upon the frequency of the input. The bias on transistor 22 is such that it just conducts at the mill-channel frequency, so that it conducts over a part of each cycle of the higher frequency but is cut off at other times. The resultant signal is rectified at 34 and controls relay 34 which energizes relay 9, the latter giving double current signals. if transistor 11 in amplifier 4 is operated as a phase splitter, the anti-phase signals from collector and base are used to feed the bases of transistors 16 and 17 in the bi-stable unit.
Patent GB-1052783-A (GB)
IPC: G03G15/04
Abstract: 1,052,783. Reflex exposure system; xerographic apparatus. RANK XEROX Ltd. Sept.16, 1964 [Oct. 1, 1963], No.37805/64. Headings G2A and G2H. A reflex exposure system comprises contacting an original with a photosensitive member in a continuously progressing line of contact, delivering a line of light between the original and said member to a point close to the line of contact, thus illuminating the original and imagewise exposing the photosensitive layer with the light reflected from the original. In an embodiment light sources are so as shown in Figs. 2 and 4, wherein a housing (17) or (26) containing a strip light (18) supports a transparent thin sheet (16) or wedge (27) having highly polished and/or mirrored surfaces for the internal reflection, the light being emitted from edge (22) which may be roughened and/or slanted Figs. 7 and 8 (not shown) to preferentially direct the light onto the original. In a further embodiment (Fig. 9) a xerographic copy is prepared by charging a drum (30) coated with a photoconductor, with wire (32), exposing the original (40) and drum by the light source (38) of Fig. 4, developing with powder, transferring the powder image to web (43) and heat fixing. In a similar embodiment Fig. 10 (not shown) the original is supported on a drum and the light source of Fig. 2 used.
Patent GB-1053208-A (GB)
IPC: C07J1/00
Abstract: 1,053,208. 4-Chloro-17α-methyl-11#-hydroxytestosterone. JENAPHARM VEB. Aug. 23. 1965. No. 36097/65. Heading C2U. The invention comprises 4-chloro-11#-hydroxy-17α-methyltestosterone and its preparation from androst-4-ene-3,11,17-trione by conversion to 11#,17# - dihydroxy - 17 α - methylandrost - 4 - en 3 - one by (a) formation of a 3,17-diketal or dienamine, treatment with lithium aluminium hydride and hydrolysis to form the 3,17-dione-11#-ol, converting this to a 3-ketal or enamine and subjecting this to a Grignard reaction; or (b) formation of a 3-ketal- or enamine, followed by a Grignard reaction to form the 17α-methyl-17#-ol and lithium aluminium hydride reduction, and chlorinating at the 4 position, optionally after conversion to the 4,5-epoxide. The compound of the invention has anabolic activity. 11# - Hydroxy - androst - 4 - en - 3,17 - dione may also be prepared by treatment of corticosterone with sodium bismuthate.
Patent GB-1054461-A (GB)
IPC: H01J23/087
Abstract: 1,054,461. Alloys. VARIAN ASSOCIATES. Jan.29, 1964 [Feb. 6, 1963], No.3880/64. Heading C7A. [Also in Division H1] The following compositions are disclosed: - copper tungsten - 44%/56%, 70%/30%, 65%/35%, and 49%/51%; and copper/iron - 23%/77%, (20 - 30)%/(80 - 70)%, and (23 - 30)%/(77 -70)%. They are employed in the construction of discharge tubes (see Division H1).
Patent GB-1228041-A (GB)
IPC: C07D231/52
Filed: 1968-10-23
Abstract: 1,228,041. Alkylthio-alkanoylamides. KONISHIROKU PHOTO INDUSTRY CO. Ltd. 23 Oct., 1968 [23 Oct., 1967], No. 50278/68. Heading C2C. [Also in Divisions C4 and G2] The invention comprises compounds of formula wherein R is a C 8-18  aliphatic hydrocarbon residue, B is a colour coupler residue (as hereinafter defined), X is a phenylene radical which may be substituted or an alkylene or aralkylene radical and m and n are 1 or 2. The compounds are used in photographic compositions (see Division G2) and are prepared by condensing an appropriate alkylthioalkanoic acid chloride with an amine H 2 N-(X) m-1 -B. The term " colour coupler residue" is defined as an organic group containing, at least one active methylene group adjacent to a carbonyl group, at least one phenolic OH group or a pyrazolone, indazolone or pyrazolino.(l ,5-a]-benzimidazole nucleus. The compound of formula is prepared by condensing x-(3-aminobenzoyl)-2- methoxyacetanilide with # - n - dodecylthio- α - methyl - propionic acid chloride. A number of further compounds of the above beneral formula are specified. # - n - Dodecylthio - α - methyl - propionic acid is prepared by condensing n-dodecyl-mercaptan and methyl methacrylate to yield methyl #-ndodecylthio-x-methyl-propionate which is hydrolysed with aqueous KOH. The corresponding octylthio- and octadecylthio-compounds are described. #-t-Dodecylthioacetic acid is prepared by condensing t-dodeeylmereaptan with ethylmonochloroacetate in the presence of sodium ethoxide to yield ethyl #-t-dodecylthioacetate which is hydrolysed as above. The carboxylic acids are converted to the acid chlorides by treatment with thionyl chloride.