baber/WOPTO huggingface dataset:
Patent TW-I760886-B (TW)
Title: 基板搬送裝置及基板搬送方法
Inventor: MUSHA KAZUHIRO
IPC: H01L21/677
Filed: 2020-10-13
Granted: 2022-04-11
Abstract: 本發明提供一種可保持基板之位置精度，且提高基板之搬送效率的基板搬送裝置、及基板搬送方法，本發明具備：使手臂11上升，而使末端執行器（End Effector）12接收基板S之驅動部20；及控制驅動部20之輸出，並設定手臂11之上升速度的控制裝置30；末端執行器12與手臂11之高度差係位置差分，且從末端執行器12接觸基板S時起至末端執行器12接收基板S結束為止的期間係過渡期間，控制裝置30將過渡期間之位置差分的加速度、或變加速度之一方振幅比過渡期間前小的上升速度之上限值，作為在過渡期間之上升速度的上限值。
Patent TW-I731811-B (TW)
Title: 半導體光檢測元件
Inventor: KASUYA TATSUKI
IPC: H01L31/10
Filed: 2017-03-03
Granted: 2021-06-21
Abstract: 半導體光檢測元件SP1具備矽基板即半導體基板1。半導體基板1具有光入射面即第二主面1b與對向於第二主面1b之第一主面1a。在半導體基板1中，相應於入射光而產生載子。於第二主面1b形成有複數個凸部10。凸部10具有相對於半導體基板1之厚度方向傾斜之斜面10a。在凸部10中，半導體基板1之(111)面露出而作為斜面10a。凸部10之高度為200 nm以上。
Patent TW-I813917-B (TW)
Inventor: HONG JI-CUN
IPC: H04B17/00
Filed: 2020-11-03
Granted: 2023-09-01
Abstract: 一種乾式真空幫浦之通訊轉換裝置包含：第一通訊模組、記憶模組、第二通訊模組以及處理模組，第一通訊模組自乾式真空幫浦之通訊埠接收感測資料封包，記憶模組儲存有可解譯感測資料封包之程式、感測資料之存取位置及識別碼，處理模組擷取感測資料，依據Modbus協定轉換感測資料之編碼，且將轉換編碼之感測資料儲存於記憶模組。當監測主機將包含識別碼之查詢訊息傳輸至第二通訊模組時，處理模組自存取位址讀取轉換編碼之感測資料，編輯識別碼及轉換編碼之感測資料而產生SECS/GEM通訊協定的資料封包，第二通訊模組將SECS/GEM通訊協定的資料封包傳輸至監測主機。
Patent TW-I798608-B (TW)
Title: 保持裝置及光刻裝置
Inventor: NIIMI TEPPEI
IPC: H01L21/683
Filed: 2020-12-09
Granted: 2023-04-11
Abstract: [課題]
提供對於正載置有物體的情況的檢測性能方面有利的技術。
[解決手段]
保持裝置具有：保存部，其具有形成於載置物體的保持面之上的第1吸引部及第2吸引部；第1流道，其連接第1吸引部和真空源且氣體流通；第2流道，其連接第2吸引部和真空源且氣體流通；第3流道，其從第1流道分支而氣體流通；第4流道，其從第2流道分支而氣體流通；第5流道；第6流道，其與真空源連接而氣體流通；計測部，其就第5流道內的壓力或氣體流量進行計測；第1限制部，其連接第3流道和第5流道，限制從第3流道朝向第5流道的氣體的流動；第2限制部，其連接第4流道和第5流道，限制從第4流道朝向第5流道的氣體的流動；和第3限制部，其連接第5流道和第6流道，限制從第5流道朝向第6流道的氣體的流動。
Patent TW-I765535-B (TW)
Inventor: HSU CHANG-LU
IPC: A23L33/15
Filed: 2021-01-18
Granted: 2022-05-21
Abstract: 一種素植物油保健品之組成分，其包含有藻油、印加果油、亞麻仁籽油、苦茶油、紫蘇籽油、橄欖油、沙棘果油、酪梨油、蝦紅素、維生素E油；本發明素植物油保健品之組成分主要係含有DHA及EPA提供人體營養所需，其係透過多種植物性初榨油作為原料，並以低溫方式萃取其營養成分，以使該原料得以保留更多的營養成分，因此本發明之素植物油保健品所提供的DHA及EPA可取代一般來源自魚油或動物油的DHA或EPA，由於所有組成分皆來自植物性萃取物，所以可提供給任何飲食習慣的使用者，無論是葷食或是素食者皆可飲用。
Patent TW-I739706-B (TW)
Title: Data flow classification device
Inventor: LU KUO-CHENG
IPC: H04W28/10
Filed: 2021-01-19
Granted: 2021-09-11
Abstract: A data flow classification device includes a forwarding circuit and a configuring circuit. The forwarding circuit looks the classification of an input flow up in a lookup table according to information of the input flow, tags the packets of the input flow with the classification, and outputs these packets to a buffer; but if the information of the input flow is not found, the forwarding circuit tags the packets of the input flow with a predetermined classification, outputs these packets to the buffer, and adds the information of the input flow to the lookup table. The configuring circuit determines a flow threshold according to a queue length of the buffer and a target length, learns the traffic of multiple flows from the lookup table, determines the classifications of the multiple flows according to the comparison between the above-mentioned traffic and flow threshold, and stores these classifications in the lookup table.
Patent TW-I783362-B (TW)
Title: 電漿處理方法
Inventor: YAKUSHIJI MAMORU
IPC: H01L21/3065
Filed: 2021-02-01
Granted: 2022-11-11
Abstract: 提供一種可使被蝕刻材對於遮罩材的蝕刻選擇比提升，可減低遮罩圖案側壁的粗糙度之電漿處理方法。
相對於被蝕刻材，使堆積膜選擇性地堆積於遮罩材的電漿處理方法是以前述遮罩材的育成時間會比前述被蝕刻材的育成時間短的方式控制蝕刻參數。
Patent TW-I798645-B (TW)
Title: 推送裝置
Inventor: WU SHAN-DA
IPC: B65G47/82
Filed: 2018-01-24
Granted: 2023-04-11
Abstract: 本發明一種推送裝置，包括：一第一載座以及設於該第一載座上的一推架；一防阻機構，其包括：一設於該第一載座下方的第二載座；該第一載座可相對該第二載座位移；藉此可在推送受阻時作出反應以減輕機構受損程度。
Patent TW-I765640-B (TW)
Title: 作為dna-pk抑制劑的氨基嘧啶化合物及其衍生物
Inventor: CHEN KEVIN X
IPC: A61P35/00
Filed: 2021-04-06
Granted: 2022-05-21
Abstract: 本發明提供了一類DNA-PK抑制劑，具體提供了式（II）所示化合物或其藥學上可接受的鹽，及其在製備DNA-PK抑制劑相關藥物中的用途。
Patent TW-I793584-B (TW)
Inventor: CHUANG CHUN-YUNG
IPC: G06T17/05
Filed: 2021-04-28
Granted: 2023-02-21
Abstract: A mapping and localization system for automated valet parking and method thereof is disclosed. It includes an image information receiving module, for receiving continuous image information from at least two monocular cameras to capture the surrounding environment of a vehicle; a vehicle information assembly interface that receives data from the vehicle; a processing unit, generates feature points with depth information in each frame of the continuous image information of the surrounding environment of the vehicle, and after matching the feature points with the driving data information of the vehicle, a three-dimensional point cloud map is constructed; and a storage module, for storing the three-dimensional point cloud map, characterized in that when the vehicle is repositioned, the processing unit can receive real-time image information of the surrounding environment of the vehicle captured by the at least two monocular cameras according to the image information receiving module. The real-time image information is used to be compared with the stored three-dimensional point cloud map to determine the positioning poses of the at least two monocular cameras.
Patent TW-I775434-B (TW)
Inventor: TSAI PU SHENG
IPC: G06T7/10
Filed: 2021-05-13
Granted: 2022-08-21
Abstract: 本發明3D列印錯誤發生警告裝置包含：一控制系統連綫至一3D列印裝
置並可操控該3D列印裝置；一影像拍攝裝置可拍攝擷取該3D列印裝置之噴嘴頭與列印物件之影像；一處理系統電性連接該影像拍攝裝置、該控制系統，該處理系統接收該影像拍攝裝置拍攝的影像並對影像中噴嘴頭與列印物件之相對位置進行比對與驗證，當比對出有異常時傳送訊號至該控制系統；藉此，該影像拍攝裝置持續拍攝擷取該3D列印裝置之噴嘴頭與列印物件之列印影像，該處理系統則持續進行比對與驗證，當該3D列印裝置發生列印錯誤，可即時發出指令或信號給該控制系統停止該3D列印裝置。
Patent TW-I792312-B (TW)
Title: 靜電卡盤、基板處理裝置以及基板處理方法
Inventor: KO HYUN TAK
IPC: H01L21/687
Filed: 2021-05-14
Granted: 2023-02-11
Abstract: 本發明公開一種靜電卡盤、基板處理裝置以及基板處理方法。本發明在上側的卡盤主體和下側的卡盤底座之間配置利用導熱流體的導熱層，只是將卡盤主體放置於卡盤底座上以卡盤主體與導熱層物理接觸，因此導熱層在高溫條件下也能够無損壞且穩定地執行導熱，爲了維護，能够將卡盤主體從卡盤底座容易地分離。
Patent TW-I783496-B (TW)
Inventor: BLOMGREN PETER A
IPC: C07D205/04
Filed: 2017-06-12
Granted: 2022-11-11
Abstract: 本發明概言之係關於結合至NR1H4受體(FXR)且充當FXR之激動劑之化合物。本發明進一步係關於該等化合物用於製備用以透過該等化合物與該核受體之結合來治療疾病及/或病況之藥劑之用途；且關於合成該等化合物之方法。
Patent TW-I762374-B (TW)
Title: 灑水裝置
Inventor: CHENG CHI HAN
IPC: B05B3/16
Filed: 2021-07-08
Granted: 2022-04-21
Abstract: 一種灑水裝置包括一基座、一管體和最少一個控制組件，該管體設於基座上，該控制組件設於管體，其中該管體套設最少一噴嘴組，該噴嘴組係由多個噴嘴陣列延伸形成的；以及，該控制組件包括對應設置在管體上的最少一個扳部和最少一個導引件，該扳部組設有一連接件，該連接件樞接該導引件，該導引件上設有多個滑槽，該多個滑槽對應套設於該多個噴嘴，該滑槽使得多個噴嘴適於沿著一反復方向選擇性地移動，通過手動操作該扳部橫向移動則可連動該導引件沿徑向移動進而推移該多個噴嘴中最少一個噴嘴沿著橫向線性傾斜。
Patent TW-I779992-B (TW)
Inventor: CHEN PEI-TING
IPC: F21V3/00
Filed: 2022-01-17
Granted: 2022-10-01
Abstract: A shadow play lamp includes a body, a light-emitting module, and a diffuse lampshade. The light-emitting module is disposed in the body, and configured to emit light to illuminate a screen of a shadow play stage. The diffuse lampshade includes a first diffusion portion, a second diffusion portion and a third diffusion portion that are adjacent to the first diffusion portion and opposite to each other. Illuminating directions of the first diffusion portion, the second diffusion portion, and the third diffusion portion are different respectively. The diffuse lampshade is disposed on and covers the body and the light-emitting module to diffuse the light emitted by the light-emitting module.
Patent TW-I811000-B (TW)
Inventor: LI SEN LIN
IPC: H01L33/10
Filed: 2022-06-30
Granted: 2023-08-01
Abstract: 本發明提供了一種發光二極體(Light Emitting Diode,LED)外延結構和發光二極體，其中，所述LED外延結構從下至上依次包括：襯底、緩衝層、分佈式布拉格反射鏡層以及半導體層，所述分佈式布拉格反射鏡層包括低折射率膜層和位於該低折射率膜層上的高折射率膜層，且所述高折射率膜層的厚度薄於所述高折射率膜層的光學厚度。本發明通過調整所述高折射率膜層的厚度可以減小所述分佈式布拉格反射鏡層的光吸收，提高分佈式布拉格反射鏡層的反射率和出光強度。
Patent TW-I794133-B (TW)
Inventor: SUZUKI TOSHIYA
IPC: H01L21/033
Filed: 2016-11-09
Granted: 2023-02-21
Abstract: Methods for depositing silicon oxycarbonitride (SiOCN) thin films on a substrate in a reaction space are provided. The methods can include at least one plasma enhanced atomic layer deposition (PEALD) cycle including alternately and sequentially contacting the substrate with a silicon precursor and a second reactant that does not include oxygen. In some embodiments the methods allow for the deposition of SiOCN films having improved acid-based wet etch resistance.
Patent ZA-200205026-B (ZA)
Title: Bitumen coating of particulate material.
Inventor: HOAD LESLIE
IPC: C08L95/00
Filed: 2002-06-21
Abstract: An apparatus for bitumen coating particulate material comprises a chamber (2) having baffles or deflectors (4), a particulate material inlet (8) and a particulate material outlet (10). In use, a foamed bituminus formulation is directed into the chamber via an outlet (12) and an air stream is directed from an inlet (14) towards the bituminous formulation, to atomise the formulation. The atomised formulation then contacts particulate material which passes in a convoluted path through the chamber via inlet (8). Prior to contact with the atomised bituminous formulation, heated air which passes into the chamber via a second gas inlet (16) heats the surface of the stone. After the particulate material has been coated it is discharged via outlet (10) for subsequent use.
Patent ZA-200205898-B (ZA)
Title: User equipment and procedure for handling possible out-of-synchronization condition.
Inventor: TOSKALA ANTTI
IPC: H04W52/28
Filed: 2002-07-23
Abstract: An out-of-synchronization condition for a Universal Mobile Telecommunications System (UMTS) is defined for a situation in which it may be difficult to distinguish an out-of-synchronization condition in a downlink dedicated channel from interference on that channel. A request is sent on an uplink from a user equipment (UE) to a base station transceiver (BST) for increased power on a downlink channel experiencing a possible frames out-of-synchronization condition, which may instead be a possible interference condition, so as to attempt to eliminate the possible interference. After a first selected period of time without eliminating the possible interference problem, the uplink is terminated unless a broadcast downlink channel is determined to be experiencing interference below a selected level, in which case the UE is allowed to continue to send the request for increased power. Only after a second selected period of time without eliminating the possible interference problem is the uplink terminated.
Patent ZA-200300005-B (ZA)
Title: 4-alkoxy cyclohexane-1 amino carboxylic acid esters and method for the production thereof.
Inventor: HIMMLER THOMAS
IPC: C07C229/48
Filed: 2003-01-02
Abstract: The invention relates to novel 4-alkoxy-cyclohexane-1-amino-carboxylic esters of the formula (IV) in which R1 and R2 are as defined in the description, to intermediates and processes for their preparation and to their use as intermediates in the synthesis of insecticidal, acaricidal and herbicidal compounds or pharmaceutically active compounds.
Patent ZA-200301530-B (ZA)
Title: Control valve.
Inventor: WEINGARTEN ZVI
IPC: A61M39/00
Filed: 2002-06-04
Abstract: A control valve for regulating flow of fluids passing through the valve. The control valve includes a body with an inlet, an outlet and a passageway through which the fluid passes from the inlet to the outlet. The control valve also includes a displaceable column provided with an internal and concentric bolt, the displaceable column is actuated by an actuator, the actuator positioned in a chamber that is connected to the body, a valve closure attached to the displaceable column. The displaceable column moves between a most retracted position, in which the inlet is fluidically communicating with the outlet, and a most pulled out position, in which the valve closure sealingly blocks the passage of fluid through the control valve.
Patent ZA-200401014-B (ZA)
Title: System and method for rapid heating of fluid
Inventor: CEDRIC ISRAELSOHN
IPC: F24H/
Filed: 2004-02-06
Abstract: Apparatus for rapidly heating fluid includes a fluid circuit (12) having electrodes (16, 17, 18) between which the fluid flows. A voltage is applied between a pair of electrodes (16, 17, 18) whereby current is caused to flow through the fluid. The inlet and outlet fluid temperatures are measured and the current controlled by varying the applied voltage to produce a desired temperature rise in the fluid in accordance with measured fluid flow rate.
Patent ZA-200705485-B (ZA)
Title: System and method for viewing digital visual content on a device
Inventor: ANTTI KOIVISTO
IPC: H04M1/72445
Filed: 2007-07-05
Abstract: A system and method for viewing material displayed on an electronic device. When a user desires to view a document, only a portion of which is viewable on a display at a given moment, the portion is displayed on the display as a primary image. A secondary image is then generated, with the secondary image including the portion and additional material of the document not part of the primary image. The secondary image is superimposed over the primary image on the display when a user scrolls through the document such that both the secondary image and the primary image are visible to the user.
Patent ZA-200900747-B (ZA)
Title: Alphanizomenon flos aquae preparation, extracts and purified components thereof for the treatment of neurological, neurodegenerative and mood disorders
Inventor: SCOGLIO STEFANO
IPC: A61K/
Filed: 2007-06-26
Abstract: The invention provides extracts of the microalga Aphanizomenon Flos Aquae Aquae Ralfs ex Born. & Flah. Var. flos aquae (AFA Klamath) and purified components thereof useful for the prevention or treatment of neurological, neurodegenerative and mood conditions or diseases.
Patent ZA-200905325-B (ZA)
Title: Shape representation using cosine transforms
Inventor: MONRO DONALD MARTIN
IPC: G06K/
Filed: 2009-07-30
Abstract: A method of approximating the inner or outer boundary of an iris comprises generating an approximate boundary representation (20) comprising a least squares approximation by a cosine transform series of a function of the angle (θ) about a fixed point (A) of the distance of measured points (10) on the boundary from the fixed point (A). More broadly, the method may be used to approximate the shape of any two-dimensional curve or figure.
Patent ZA-202003546-B (ZA)
Title: System and method for characterizing protein dimerization
Inventor: SHUNHAI WANG
Filed: 2020-06-12
Abstract: Systems and methods to characterize dimerization interfaces at the subdomain level of a protein are provided. An exemplary method includes digesting a protein dimer sample into subdomains, labeling the digested protein sample, isolating labeled dimeric and monomeric subdomain fragments, and peptide mapping the labeled sample to determine where the dimer fragments are labeled and where the dimer fragments are not labeled. Regions that show decreased labeling extents in the dimer fraction than that in the monomer fraction are likely involved or in close proximity to the dimerization interface.
Patent ZA-202206308-B (ZA)
Title: Ezetimibe and curcumin for use in cancer treatment
Inventor: NTWASA MONDE
Filed: 2022-06-07
Abstract: The invention is directed at use of ezetimibe or a pharmaceutically acceptable salt or derivative thereof in the manufacture of a pharmaceutical composition for treatment of an Mdm2-overexpressing cancer. It is also directed at use of ezetimibe, or a pharmaceutically acceptable salt or derivative thereof, in combination with curcumin in the manufacture of a pharmaceutical composition for treatment of an Mdm2-overexpressing colon cancer. The invention is further directed at a pharmaceutical composition comprising ezetimibe, or a pharmaceutically acceptable salt or derivative thereof, and curcumin for use in a method of treating an Mdm2-overexpressing cancer.
Patent GR-1003585-B (GR)
Title: Thermal combustible-free turbine reactors of the closed or open circuit type
Inventor: VESSIS VASILEIOU MICHAIL
IPC: F03G7/10
Filed: 2000-03-09
Abstract: The invention relates to combustible-free turbine reactor of  the closed or open circuit type both manufactured and operable with same requirements. The high-production gases are  conducted from the air-compressor A' via the output conduits to the thermal pockets wherein there are thermal elements (wolfram elements) for the gases expansion. The expanded gases are connected with the distributor to be analogously distibuted, upon the brain's orders, to the blowers of all free-rotating rotors and the stationary rotor for the rotation of the air-compressor shaft B', which air-compressor is connected via a coupling to rotate the power generators for the thermal elements and aircraft needs. The invented thermal open-circuit turbine reactors can be used either in the sea or in the air space according to the activity and application to be performed. The thermal closed-circuit turbine rotors operate as the thermal open-circuit turbine rotors do, except that the first ones do not emit the gases to the air-compressor B'. In this case, the gases are recycled and conducted to the thermal expansion pockets of the air-compressor B'; the thermal energy, by means of the thermal elements lodged into the thermal pockets, is converted into the electric form with the help of generators, in order to be used in sea and ground machines of any type.
Patent GR-1003992-B (GR)
Title: Device for cleaning any water surface
Inventor: MALOUDIS EMMANOUIL
IPC: E02B15/06
Filed: 2001-09-21
Abstract: The Water Surface Pollution Waste Collection and Retention System is a device for cleaning any water surface. It consists of a net, which is kept taut by rods and directional stabilizers. The rods and stabilizers ensure controlled sinking of the net and stable buoyancy for the system in poor weather conditions. These are connected to the net by rigging. The lower rigging consists of lead wire and the upper rigging of spun polyester rope. The device also consists of a fluorescent ring, lights and large light buoys. The device can be firmly anchored in one position by 50 kg anchors. The device can be spread out on water and then by pulling it along with a vessel pollutants are trapped or it can be brought to the desired location and then anchored there. In this way waste is removed from the sea using different methods, or pollutants are simply prevented from approaching a given shoreline.
Patent GR-1004499-B (GR)
Title: Production of wooden door with the assembly of prefabricated elements
Inventor: KOUTROPOULOS FOTIOS KON NOU
IPC: E06B3/96
Filed: 2003-05-13
Abstract: roduction of a wooden door with the assembly of prefabricated elements refers to a wooden door with panels, which consists from a mobile sheet (1) and the doorframe (2). The production of the door is done, with prefabricated elements which are assembled with prefab joints and connection mechanisms (5), so that the doorframe (2) consists from two vertical elements (2.1) and one horizontal element (2.2) and the mobile sheet (1) consists from the two vertical elements (3.1), (3.2) and two horizontal (3.3), (3.4) which consist from the perimetric wooden frame (3) the intermediate internal elements (3.5), (3.11), (3.12) of the wooden frame (3), the connection mechanism (5) which connect and hold the elements of the wooden frame (3), the locking mechanism (6) of the joints and the panels (4). The prefabricated elements are transported packed and their assembly is done during the installation of the door to the hinges of the doorframe (2). The door could be assembled and disassembled easilyand quickly without a special technician.
Patent MX-338002-B (MX)
Title: Toner container and image forming device.
Inventor: KURENUMA TAKEROH
IPC: B41J2/175
Filed: 2006-11-01
Abstract: A toner container (132Y) detachably installed in the toner container storage part of the image forming device body of an image forming device. The toner container comprises a container body (133Y) storing a toner therein, a held part (134Y) fitted to the longitudinal end part of the container body (133Y), having a toner discharge port (B) for discharging the toner stored in the container body (133Y), and held on the toner container storage part, and a still standing suppressing means fitted to the held part (134Y) and suppressing the still standing of the toner container on a still standing surface in the state of the held part (134Y) positioned in the vertical lower direction to the container body (133Y).
Patent MX-352921-B (MX)
Title: Polycrystalline diamond.
Inventor: JOHN HEWITT LIVERSAGE
IPC: E21B10/567
Filed: 2010-03-08
Abstract: An embodiment of a PCD insert comprises an embodiment of a PCD element joined to a cemented carbide substrate at an interface. The PCD element has internal diamond surfaces defining interstices between them. The PCD element comprises a masked or passivated region and an unmasked or unpassivated region, the unmasked or unpassivated region defining a boundary with the substrate, the boundary being the interface. At least some of the internal diamond surfaces of the masked or passivated region contact a mask or passivation medium, and some or ail of the interstices of the masked or passivated region and of the unmasked or unpassivated region are at least partially filled with an infiltrant material.
Patent MX-337798-B (MX)
Title: Dispersible wet wipes constructed with a plurality of layers having different densities and methods of manufacturing.
Inventor: POWLING DAVID JAMES SEALY
IPC: B05C13/00
Filed: 2011-11-16
Abstract: A dispersible wet wipe constructed of at two layers is disclosed. The first outer layer of the wipe substrate may have a density of between about 0.5 and 2.0 grams per cubic centimeter. The second outer layer may have a density of between about 0.05 and 0.15 grams per cubic centimeter. A triggerable binder composition binds said web substrate together. The wet wipe also includes a wetting composition including at least 0.3 percent of an insolubilizing agent.
Patent MX-343860-B (MX)
Title: Method for the manufacture of a polyhydroxy-carboxylic acid.
Inventor: MANFRED STEPANSKI
IPC: B01D9/04
Filed: 2011-11-15
Abstract: Disclosed is a method to prepare a polylactic acid comprising the steps of: performing a ring opening polymerization using a catalyst and either a catalyst killer compound or an endcapping additive to obtain a raw polylactic acid of MW greater than 10,000 g/mol, purifying the raw polylactic acid by removing and separating low boiling compounds comprising lactide and impurities from the raw polylactic acid by devolatization of the low boiling compounds as a gas phase stream, purifying the lactide from the devolatization and removing the impurities from the gas phase stream of evaporated low boiling compounds by means of condensing the evaporated gas phase stream to give a condensed stream and a subsequent melt crystallization of the condensed stream, wherein the lactide is purified and the removed impurities include a catalyst residue and a compound containing at least one hydroxyl group such that the purified lactide is polymerized by feeding it back into the ring opening polymerization. The invention further relates to an apparatus for carrying out the method comprising: a polymerization reactor for performing a ring opening polymerization to obtain a raw polylactic acid, a devolatization apparatus for removing and separating low boiling compounds comprising lactide and impurities from a raw polylactic acid, and a crystallization apparatus for purifying a lactide and removing impurities from a condensed stream, wherein a condenser for condensing a gas phase stream to give a condensed stream is arranged between the devolatization apparatus and the crystallization apparatus.