baber/WOPTO huggingface dataset:
Patent JP-2001515444-A (JP)
IPC: B31C3/00
Filed: 1998-01-23
Abstract: A structural ply of a spiral paperboard core has an elasticity modulus E in the cross machine direction (CD) higher than 4500 Mpa, and an elasticity modulus E in the machine direction (MD) higher than 7500 MPa (N/mm2). Such paperboard cores may be manufactured by using, either solely or partly, these structural plies, the paperboard for making up such structural plies having been manufactured by press drying. Paperboard based on the press drying method can be manufactured, e.g., with a board machine employing the Condebelt process. The cores may be used as yarn carriers and as tubes for thin films and foils, which may be wound onto and unwound from the cores at a speed of at least about 200 meters/minute.
Patent JP-H11506549-A (JP)
Title: 高性能偏光フィルムの製造方法
IPC: C08L71/12
Filed: 1996-05-20
Abstract: (57)【要約】
本発明は、高性能偏光フィルムの新規製造法を提供する。一態様において、本方法は、フィルム成形性の、全芳香族サーモトロピック液晶ポリエステルと二色性染料とを溶融ブレンドする段階と、次いで好適な温度で、該ブレンドを押し出して、優れた偏光効率と熱安定性と湿度安定性を兼備した偏光フィルムを製造する段階を含む。
Patent JP-H11511854-A (JP)
IPC: G01N15/02
Filed: 1996-10-11
Abstract: The invention relates to a method of diagnosing a malignant disorder or its precursor stages. The aim is to develop a diagnostic procedure for malignant disorders and their precursor stages which causes no pain or discomfort to the patient. This is done by plotting a blood cell size histogram in venous and arterial blood which for a particular blood cell type gives the percentage of cells of between 6 and 16 micron in size for both arterial and venous blood, multiplies the values obtained for arterial and venous blood separately with a weighting factor and adds them up and forms the linear combinations of the sums for arterial and venous blood.
Patent JP-2000511936-A (JP)
Title: ブプレノルフィンによる持続的痛覚消失
IPC: A61F13/00
Filed: 1998-02-24
Abstract: (57)【要約】
ヒトの疼痛を有効に治療する方法のための薬剤の製造におけるブプレノルフィンの使用は、ブプレノルフィンを、最初の３日間の投与期間にわたって１次薬物動態を示す形態で投与し、これにより約20ｐｇ/ｍｌ〜約1052ｐｇ/ｍｌの最大血漿濃度を得、その後さらに少なくとも２日間の追加の投与期間において０次動態を示す形態でブプレノルフィンの投与を維持して、その少なくとも２日の追加の投与期間にわたって患者が痛覚消失を得ることにより達成される。
Patent JP-2000515723-A (JP)
Title: 新規化合物
IPC: A61K39/00
Filed: 1997-04-18
Abstract: (57)【要約】
本発明は、ｇｌｙＳ（ベータ）およびｇｌｙＳ（アルファ）ポリペプチドおよびｇｌｙＳ（ベータ）およびｇｌｙＳ（アルファ）ポリペプチドをコードするＤＮＡ（ＲＮＡ）、ならびに組み換え法によるかかるポリペプチドの製造方法を提供する。抗細菌化合物のスクリーニングのためのｇｌｙＳ（ベータ）およびｇｌｙＳ（アルファ）ポリペプチドの使用方法も提供する。
Patent JP-2000510463-A (JP)
IPC: C07H19/20
Filed: 1997-04-30
Abstract: The invention relates to nucleoside derivatives bearing electrolabile protector groupings and their use in an oligonucleotide synthesis method comprising at least one step of electronic deprotection.
Patent JP-2000510204-A (JP)
Title: ハンマー装置
IPC: B25D17/06
Filed: 1997-05-06
Abstract: (57)【要約】
本発明は、ドリルビット（11）と、該ドリルビットを定期的に打つために、その後方で往復動するピストン（10）とを含んでいるハンマー装置、好ましくはダウンザホールハンマーに関する。ドリルビット（11）は異なるインピーダンスの前部部分（11ａ）と後部部分（11ｂ）とを含んでおり、かつピストン（10）は、異なるインピーダンスの前部部分（10ｂ）と後部部分（10ａ）とを含んでいる。ドリルビットでは、前部部分（11ａ）は、後部部分（11ｂ）よりも大きなインピーダンスを有している。ピストンでは、後部部分(10ａ)は、前部部分（10ｂ）より大きなインピーダンスを有している。ドリルビットの前部部分（11ａ）の長さは、ドリルビットの後部部分（11ｂ）の長さの約２倍である。ピストンの後部部分（10ａ）の長さは、ピストンの前部部分（10ｂ）の長さの約２倍である。本発明は、ドリルビット（11）及びピストン（10）自体にも関している。
Patent JP-2000513745-A (JP)
Title: 局所用抗菌組成物
IPC: A61K8/41
Filed: 1998-05-04
Abstract: (57)【要約】
本発明は、局所的に発生する菌成長を、スフィンゴイドベースを含む局所用組成物を施すことにより阻害することを開示する。具体的には、前記スフィンゴイドベースを界面活性剤と組み合わせて効果的に配合する。
Patent JP-2001525092-A (JP)
Title: プレゼンテーション装置
IPC: F24F1/22
Filed: 1998-05-12
Abstract: (57)【要約】
この発明は携帯式プレゼンテーション装置（１）に関するもので、該装置は蓋（３）と基部（４）と第１の表示ユニット（７）とこれを駆動する制御器（１０）とを有している。装置はブリーフ・ケースの形をしており、第１の表示ユニットは蓋に内蔵されている。蓋を開けると第１の表示ユニットが基部に対して直交状態となり、第１の表示ユニットを制御器により操作してプレゼンテーションを小グループの看者に呈することができる。制御器はそれ自身の表示ユニット（１１）を具えてもよく、これにより操作者もプレゼンテーションを視認制御することができる。
Patent JP-H0741929-A (JP)
Title: Preparation of composite article by metal spray
Inventor: REENZU PII DARARU
IPC: C23C4/18
Filed: 1989-03-23
Abstract: PURPOSE: To obtain a composite metallic article useful for high temperature service by thermally spraying a molten metal on a metallic member preheated in a low-pressure atmosphere, applying temperature treatment to the resultant preform, and then carrying out removal of pores and joining.  
     CONSTITUTION: A surface cleaned metallic member is preheated to 1500 to 1800°F in a low-pressure atmosphere to facilitate metallugical joining to a thermally sprayed metal. Subsequently, a molten metal is thermally sprayed on the metallic member and a thermally sprayed metal part having pores in part is successively formed to form a preform of composite article. The preform is cooled slowly to reduce residual stress in the interface. Then, the preform is hot isostatic pressed to remove the pores and metallurgically join the thermally sprayed metal part to the surface of the metallic member, by which the composite metallic article can be obtained. 
     COPYRIGHT: (C)1995,JPO
Patent MD-20070006-A (MD)
Inventor: SCHILIOV VLADIMIR
IPC: G06V30/224
Filed: 2007-01-12
Abstract: Inventia se refera la domeniul identificarii resurselor materiale si poate fi utilizata pentru marcarea pieselor conductoare de energie electrica, deexemplu, din industriile constructoare de automobile, navelor aeriene, apararii, etc. Procedeul consta in aceea ca imaginea nereproductiva a marcii de identificare se creeaza prin descarcarea electrica intre piesa si electrodul compus, executat din nanocompoziti ultradispersati ai pulberilor de metal.
Patent MD-20080231-A (MD)
Inventor: ERMURATSCHII VLADIMIR
IPC: F24S23/77
Filed: 2008-09-01
Abstract: Inventia se refera la domeniul termoenergeticii, in particular la dispozitivele pentru transformarea energiei naturale: radiatiei solare in energie termica, a energiei atmosferei si cosmosului in frig, si poate fi aplicata in sistemele de alimentare cu caldura si frig natural. Colectorul-acumulator contine o camera termoizolata in forma de paralelipiped sau trunchi de piramida cu invelitoare transparenta pentru radiatia electromagnetica. In interior camera este divizata de pereti despartitori in sectoare si de un planseu intr-un compartiment de plafon. Fiecare sector este divizat de rafturi in caturi, pe care sunt instalate elemente de acumulare. In compartimentul de plafon este instalat un absorbitor/radiator, de exemplu, in forma de sir de plase innegrite, sub care este instalat un schimbator de caldura fara acumulare de apa. Sectoarele si compartimentul de plafon sunt dotate cu capace cu reflectoare si canale pentru agentul termic gazos. Colectorul-acumulator contine o cutie, divizata in conducte de gaze, care comunica cu sectoarele si compartimentul de plafon, si un sistem de circulare a agentului termic cu elemente de inchidere si de reglare. Rezultatul inventiei consta in multitudinea de variante ale regimurilor de functionare a colectorului-acumulator, functionarea cu agenti termici gazos si lichid, simplitatea constructiei.
Patent NZ-197238-A (NZ)
Title: Alkyl omega-n-(3-phenoxy-2-hydroxypropyl)aminoalkanoates
Inventor: CARLSSON E I
IPC: A61K31/216
Filed: 1981-05-29
Abstract: The present invention relates to new compounds of the formula I <IMAGE> (I)  as well as their preparation, pharmaceutical preparations containing same, and method of treating acute myocardial infarction. The compounds which possess beta-adrenoceptor blocking activity are very shortacting and are preferably intended for treatment of acute myocardial infarction by administration by means of injection.
Patent NZ-200282-A (NZ)
Title: Treating plants,parts of plants,seeds thereof or the locus thereof with certain nitroarylsulphones in order to stimulate flower formation
Inventor: FANKHAUSER E
IPC: A01N41/10
Filed: 1982-04-08
Abstract: The invention describes gametocidal and microbicidal compositions which contain, as active ingredient, a nitroarylalkylsulfone derivative of the formula I    <IMAGE>  (I)  wherein R1 is alkyl, R2 and R3 are each hydrogen, alkyl, alkoxy, haloalkyl, halogen, cyano, nitro or amino or together they complete a naphthalene ring; R4 is hydrogen or -COR5, wherein R5 is alkyl, alkoxy, haloalkoxy, alkenyl, haloalkenyl, alkynyl, cycloalkyl, phenyl, benzyl, furyl or tetrahydrofuryl. The invention relates also to the use of these compositions and compounds for stimulating generative plant growth and for obtaining hybrid seeds, as well as to a method of preparing the hydrazinium and ammonium salts within the scope of the formula I, and to a process for preparing agrochemical compositions which contain compounds of the formula I as active ingredient.
Patent NZ-201241-A (NZ)
Title: Continuous business form assembly,an envelope and insert assembly
Inventor: ASHBY R E
IPC: B65D27/10
Filed: 1982-07-12
Abstract: A continuous, filled envelope assembly includes continuous, envelope forming webs and laterally abbreviated insert webs. The insert webs are capable of accurate feeding with the envelope webs, and also adapted to be processed independently, and include a row of spaced feed holes of one web superimposed on a non-marginal row of spaced feed holes of an adjacent web.
Patent NZ-214898-A (NZ)
Title: Fibrous web incorporating microsperes for preparing reinforced objects
Inventor: GEEL A P
IPC: D04H1/68
Filed: 1986-01-22
Abstract: The use of a fibrous web provided with microspheres disposed mainly within said web and arranged in a pattern in which areas of the web which contain microspheres and separated from each other by areas which contain virtually no microspheres, for making an article of manufacture reinforced with fibrous webbing by impregnating the web with a liquid resin and a hardener therefor. 
<??>A shaped article of manufacture comprising a bonded fibrous web as described hereinabove, provided with expanded microspheres, said fibrous web having been impregnated with a mixture of a liquid resin and a hardener therefor, cured after being shaped, as well as a method of making a fibrous web incorporating microspheres, which is characterized in that microspheres not yet expanded are pressed into the fibrous web by means of a foam paste.
Patent NZ-218617-A (NZ)
Title: Guanidinobenzoic ester derivatives and pharmaceutical compositions
Inventor: SOUDA SHIGERU
IPC: C07D209/48
Filed: 1986-12-12
Abstract: A guanidinobenzoic ester derivative having the formula wherein X represents a group of the formula: in which Y is a group of the formula:-(CH₂)<sub>m</sub>-, m being an integer of 2 or 3, or a group of the formula:-ORin which R is a hydrogen atom or a lower alkyl group, and n represents an integer of l to 5,which is effective to inhibit enzymes such as trypsin, plas­min and thrombin and useful for treatment of the pancreatitis and hemorrhagic disease and thrombosis is disclosed as well as a process for preparing same and a pharmaceutical composition containing same.
Patent NZ-219758-A (NZ)
Title: Heterocyclic ester derivatives of 1,4 dihydropyridin-3,5-dicarboxylic acids intermediates and pharmaceutical compositions
Inventor: ROBIN J
IPC: A61K31/44
Filed: 1987-03-24
Abstract: The present invention relates to novel asymmetrical esters derived from 1,4-dihydrophyridine-3,5-dicarboxylic acid, of the formula: <IMAGE>  (I)  in which: R1 represents a C1-C4 alkyl group, R2 represents a C1-C4 alkyl group, a benzyl group, a benzoyl group or a phenyl group optionally substituted by one or more C1-C4 alkoxy, C1-C4 alkyl, cyano, nitro, hydroxyl or trifluoromethyl groups or by one or more halogen atoms, and R3 and R4, which are identical or different, each represent the hydrogen atom, a nitro group or a chlorine atom, their optical isomers and diastereoisomers and also the corresponding addition salts. These novel esters are useful in therapy, especially as antihypertensives.
Patent NZ-221346-A (NZ)
Title: Preparation(purification)of somatomedin c
Inventor: BURLEIGH B D
IPC: C12N15/00
Filed: 1987-08-05
Abstract: Two different ionic forms of somatomedin C (pI 6.7-7.0 and pI 8.3-8.6) can be isolated substantially free of each other by applying an aqueous solution of purified or partially purified somatomedin C containing both ionic forms at a pH of about 4.5 to 6.5 to a strong cation-exchange column, eluting the somatomedin C from the column by applying an aqueous salt gradient at an essentially constant pH and recovering the two ionic forms in different eluant fractions.
Patent NZ-223613-A (NZ)
Title: Substrate supports thick film heater
Inventor: BALDERSON SIMON
IPC: H05B3/26
Filed: 1988-02-23
Abstract: A substrate for supporting electrical components, such as thick film resistive heating elements, comprises a plate member (1), such as a metallic plate member, coated on one or both of its flat surfaces with a glass ceramic material (2,3). It has been found that the problems of (a) electrical breakdown between the metallic plate member (1) and the thick film resistive heating element (10,20) and (b) lack of adhesion between the thick film and the glass ceramic material can be substantially reduced or eliminated by reducing the porosity of the glass ceramic material. Methods of producing a glass ceramic layer having a low porosity, involving a two-stage heating process, are described.
Patent NZ-233021-A (NZ)
Title: Substituted xanthine derivatives and pharmaceutical compositions.
Inventor: MASCHLER HARALD
IPC: C07D473/06
Filed: 1990-03-21
Abstract: A method for the treatment of cerebrovascular disorders and/or disorders associated with cerebral senility and/or other disorders which method comprises the administration of an effective, non-toxic amount of a compound of formula (I): <CHEM> or if appropriate a pharmaceutically acceptable salt thereof, wherein R<1> and R<2> each independently represent alkyl or a moiety of formula (a): -(CH2)m-A wherein m represents zero or an integer 1, 2 or 3;   A represents a substituted or unsubstituted cyclic hydrocarbon radical; and R<3> represents a halogen atom, a nitro group, or a group -NR<4>R<5> wherein R<4> and R<5> each independently represents hydrogen, alkyl or alkylcarbonyl or R<4> and R<5> together with the nitrogen to which they are attached forming an optionally substituted, heterocyclic group; certain novel compounds falling within formula (I) and compositions comprising such compounds.
Patent NZ-241528-A (NZ)
Title: Oxime ether derivatives and fungicidal compositions
Inventor: BENOIT REMY
IPC: A01N43/10
Filed: 1992-02-05
Abstract: alpha -Imino oxime cpds, described as oxime ethers, of formula (I) are new: R = CR2R3R4 or opt. substd. 3-8C cycloalkyl, 2-8C alkenyl, 2-8C alkynyl, phenyl or heteroaryl; R1 = H or 1-8C alkyl; R2 = H, 1-8C alkyl, aralkyl, heteroarylalkyl, alkoxyalkyl, aryloxyalkyl, aryl or heteroaryl; R3 = H, Me, CN, COOH or 2-9C alkoxycarbonyl; R4 = a gp. as defined for R2; or CR2R3 is a 5- to 8-membered lactone ring or CR2R4 is a 3-8C cycloalkane ring; R5 = H, 1-8C alkyl, aralkyl, 3-6C cycloalkyl, OH, 1-4C alkoxy, NH2, 1-4C alkylamino or dialkylamino; Y = a gp. stated to be an opt. substd. 1-8C alkyl, opt. substd. 2-8C alkenyl, 2-8C alkynyl, O, S(O)m (m = 0-2), N substd. by opt. substd. 1-8C alkyl, oxycarbonyl, carbonyloxy, oxycarbonyl (1-8C) alkyl, carbonyloxy (1-8C) alkyl, 2-8C oxyalkyloxy, 2-8C oxyalkenyl, 1-8C alkoxy, 1-4C oxyalkyl, 1-8C thioalkyl, azo, opt. 1-8C alkyl-substd. -carbonylamino, -aminocarbonyl or -aminocarbonyloxy, oxyimino or opt. substd. imino oxyalkyl; Z = (a) 1-18C alkyl, 2-18C alkenyl, 3-18C alkynyl, aryl, aryl (1-10C) alkyl, aryl (2-10C) alkenyl, aryloxy (1-10C) alkyl, (1-4C) alkoxy (1-10C) alkyl, 1-10C haloalkyl, 2-5C alkoxycarbonyl or heteroaryl; (b) aryloxy, aryloxy (1-10C) alkoxy, aryl (1-10C) alkoxy, 1-10C alkoxy or heteroaryloxy when Y is not oxyalkyl, oxyalkyloxy, thialkyl (sic), -O-N=C- (sic), -N=N-, oxycarbonyl, oxycarbonyloxy, O or S; or (c) 1-18C alkylthio or arylthio when Y is not oxyalkyl, oxyalkyloxy, -O-N=C- (sic), -N=N-, oxycarbonyl, oxycarbonyloxy or O, and Z is opt. substd. by halogen, CN, NO2, 1-4C alkyl, 2-4C alkenyl, 1-4C alkoxy, 1-4C haloalkyl, (1-4C) alkoxy (1-4C) alkyl, di(1-4C) alkoxy (1-4C) alkyl, opt. substd. 1-10C alkoxyimino, opt. substd. 2-10C alkenyloxyimino, opt. substd. aralkoxyimino, opt. substd. 2-10C alkanoyl, opt. substd. formyl, 2-4C haloalkenyl, 2-5C alkoxycarbonyl, opt. substd. phenyl, or opt. substd. 5-membered heterocyclyl which contains 1-4 heteroatoms (N, O and/or S) and is opt. fused with an opt. substd. aromatic or heteroaromatic ring; X = H, halogen, NO2 and/or opt. substd. 1-4C alkyl, 1-4C alkoxy and/or 1-4C haloalkyl; m = 1-4.
Patent NZ-243105-A (NZ)
Title: A long-term dispensing device that uses an expansion means to deliver a beneficial agent to an environment of use
Inventor: CARR JOHN PATRICK
IPC: A61K9/22
Filed: 1992-06-11
Abstract: The invention provides a dispensing device comprising a loading dose (first agent delivery means) for short-term and continuous delivery of an agent having a high potency, retained together with a long-term dispensing device (second agent delivery means) capable of a long-term and continuous delivery of agent. The combination of first and second agent delivery means provides a device in which a substantially constant dose of beneficial agent may be delivered to the environment of use over time. A rapid initial delivery of beneficial agent is followed by continuous and prolonged delivery of agent.
Patent NZ-260419-A (NZ)
Title: Disposable panty liner has a unitary sheet of non-woven fabric and a liquid impervious barrier layer
Inventor: BOISSE SYLVIE
IPC: D04H1/46
Filed: 1994-04-28
Abstract: A panty liner (10) comprising a primary liquid-retaining component in the form of a unitary sheet of non-woven fabric (12). A liquid-impervious barrier layer (20) is affixed to the sheet of non-woven fabric (12) to prevent body exudate absorbed therein to egress through a garment facing side of the panty liner (10). The invention also extends to a method and to an apparatus for manufacturing the panty liner (10). <IMAGE>
Patent NZ-271010-A (NZ)
Title: Lighter with flexible child-proof guard covering part of striking wheel
Inventor: MCDONOUGH JAMES M
IPC: F23Q2/46
Filed: 1994-07-26
Abstract: The lighter (10) of the present invention provides a resiliently deformable guard (60) that covers a portion of the striking wheel assembly (14). To operate the lighter (10), a user asserts sufficient pressure to depress the guard (60) before rotating the striking wheel assembly (14). The present invention provides retention mechanisms (61) to make removal of the guard (60) more difficult. Further, the lighter (10) of the present invention provides brake members (46) to prevent the rotation of the striking wheel assembly (14) when the user attempts to release fuel prior to rotating the striking wheel assembly (14). <IMAGE>
Patent NZ-275951-A (NZ)
Title: Bisnoraldehyde production from bisnoralcohol
Inventor: HEWITT BRADLEY DEE
IPC: C07J9/00
Filed: 1994-10-27
Abstract: The present invention is a process for the conversion of bisnoralcohol (I) to bisnoraldehyde (II) which is a known intermediate in the synthesis of progesterone.
Patent NZ-291592-A (NZ)
Title: Use of carbon monoxide dependent guanylyl cyclase modulating purine derivative for treating neurological diseases
Inventor: GLASKY ALVIN J
IPC: A61K31/52
Filed: 1995-07-25
Abstract: A carbon monoxide dependent guanylyl cyclase modulating purine derivative is used in the manufacture of a medicament for long-term modification of mammalian neural activity or for treating mammalian neurological diseases or for inducing the in vivo production of heme oxygenase in mammals.
Patent NZ-304438-A (NZ)
Title: Substituted triazole derivatives and antifungal compositions
Inventor: OIDA SADAO
IPC: C07D249/08
Filed: 1996-04-05
Abstract: A compound having the formula: <CHEM> Äwherein Ar<1> represents a phenyl which may be substituted, Ar<2> represents a phenyl which may be substituted or a heterocyclic group which may be substituted, R<0> represents a hydrogen atom or a lower alkyl; R<1> represents a lower alkyl; R<2> to R<5> represent a hydrogen atom or an alkyl which may be substituted with halogen, n represents 0 to 2; p represents 0 or 1; q, r and s represent 0 to 2; A represents a 4- to 7-membered carbon ring or a 4- to 7-membered heterocyclic groupÜ. The compound of the present invention exhibits excellent antifungal activities.
Patent NZ-316616-A (NZ)
Title: System and method for distributing multi-media presentations in a computer network
Inventor: COHEN ALON
IPC: H04H1/00
Filed: 1996-09-08
Abstract: A method and a system for distributing a multi-media presentation in a computer network is provided. The method includes the steps of feeding at least one site of said computer network with a stream of data of the presentation and forming in each site a plurality of data files, each data file including a segment of said multi-media presentation. The method further includes distributing the data files to at least one display and displaying the distributed data files.
Patent NZ-331985-A (NZ)
Title: Irrigation sprinkler system with protective enclosures around sprinkler heads
Inventor: KIRK JOHN
IPC: B05B15/00
Filed: 1998-09-18
Abstract: A protective shield 2 for an irrigation sprinkler 13 includes has sides 4 with open top 5 and base 3 which can slide across the ground.  The shield is clamped to the water supply pipe 7.  The shield is designed so that it can slide across the ground as the irrigation sprinkler is shifted around.  The height of the sides is such that the sprinkler head is completely enclosed in the shield, but is still able to project a spray 14 without interference from the shield.
Patent NZ-334627-A (NZ)
Title: A therapeutic composition containing a therapeutic agent such as an anthelmintic and an antistress agent such as metyrapone or a nitric oxide promoter for increasing efficacy of therapeutic agents and animal growth
Inventor: COOK CHRISTIAN JOHN
IPC: A61P33/10
Filed: 1999-03-12
Abstract: A composition for promoting production gains in animals and for enlacing efficacy of therapeutic agents comprises at least one of anthelmintics, vitamins and amino acid and at least one antistress agent such as metyrapone, mifepristone, proglumide, astressin, diazepam, allopregnanolone, dextromethorpon, zimelidine, or paroxetine.
Patent NZ-335131-A (NZ)
Title: Filter bag and process of manufacture for liquid under pressure
Inventor: GERSHENSON MOSHE
IPC: B01D29/23
Filed: 1997-11-12
Abstract: A flexible prefilter bag (3) for liquid under pressure to be used in a standard filtration bag apparatus (20).  The flexible prefilter bag (3) assembly comprises a seamless filter membrane (10), having uniform pore openings preselected within the range of between about 2 and 50 microns and a linearly channeled, nondeformable, semi-rigid liquid transport thermoplastic sheet (8) in the form of a moulded webbing or netting in contact with the upper surface of the membrane (10). The webbing (8) has marginal edges (18), which are coextensive with those of the membrane (10). The assembly (3) is shaped by continuous winding of the assembled membrane (10) and webbing (8) upon itself for 2 to 5 complete convolutions around a tubular mandrel so as to form a cylindrical tube or cone. The bottom of the cylinder is sealed to prevent liquid leakage. The top of the cylinder forms the liquid inlet opening and is sealed to a retaining ring (22) adapted to be inserted in, attached to or sealed to an outer, retaining ring (24) of a non-wrapped filter bag.