baber/WOPTO huggingface dataset:
Patent CN-114058912-B (CN)
IPC: C22C21/00
Filed: 2022-01-17
Granted: 2022-04-08
Abstract: 本发明提供一种高比强度、比刚度铝锂合金厚壁环形件及其制备方法，属于铝锂合金新材料和制造技术领域，其包括如下化学组成：Cu 0.8‑2.8wt%，Li 2.4‑3.8wt%，Mg 0.8‑1.8wt%，Zn 0.5‑1.5wt%，Er 0.1‑0.5wt%，Zr 0.05‑0.2wt%，Fe≤0.08wt%，Si≤0.05wt%，且合金元素总量不超过8.5wt%，余量为Al和不可避免的杂质。所述制备方法包括：合金配料、涂刷氮化硼、熔炼、精炼、离心浇铸、热处理。本发明能够简化铝合金环形件成形过程，内部结构致密，显著提升铝合金环形件的比强度、比刚度。
Patent CN-114191949-B (CN)
IPC: B01D53/74
Filed: 2022-02-16
Granted: 2022-04-29
Abstract: 本发明提供一种锂电池生产废气处理方法、系统和可读存储介质，方法包括：预设有m个废气排放节点以及n级废气处理装置；通过废气检测传感器分别实时检测各个废气排放节点处的废气浓度值；基于废气排放节点 处的废气浓度值，确定落入的浓度范围并找出与该浓度范围相适配的废气处理装置 ；通过控制废气排放节点 处的电磁阀，将废气通入废气处理装置 以进行处理；如果 ，则由监测传感器监测废气处理装置 排出气体是否达到废气排放标准，若是，则允许排放，若否，则停止排放；如果 ，则将废气处理装置 排出的气体通入废气处理装置 进行第 级废气处理。本发明能够有效提升废气处理效率，节省废气处理成本。
Patent CN-114414979-B (CN)
IPC: G01R31/26
Filed: 2022-03-30
Granted: 2022-07-08
Abstract: 本发明提供一种LED频率响应的测试系统及方法，包括交流信号发生模块、交直流驱动模块、校准模块、光电探测模块、频率响应分析模块和LED电路板，交流信号发生模块用于产生宽带调制信号并输出给交直流驱动模块，由交直流驱动模块对交直流信号进行耦合以驱动待测LED发出光信号；光电探测模块对待测LED发出的光信号进行探测并将光信号转换为电压信号；校准模块、交直流驱动模块及LED电路板上的寄生电感串联在交流信号发生模块的信号输出端与信号输入端之间，以使频率响应分析模块计算得到的待测LED的频率响应能够排除交直流驱动模块及LED电路板上的寄生电感的干扰影响，得到更加准确的LED的频率响应结果。
Patent GE-P19971159-B (GE)
Title: Derivatives of 2-amino-7-(chr2r3)-3h,5h-pirrolo [3,2-d]-pirimidin-4-on, methods for their production and method of selective inhibition proliferation of т-lymphocytes of mammals and not affecting в-lymphocytes
Inventor: NIWAS SHRI
IPC: C07D487/04
Filed: 1993-05-27
Abstract: The invention refers to organic chemistry, in particular to Derivatives of 2-amino-7-(CHR2R3)-3H,5H-pirrolo [3,2-d]-pirimidin-4-on of the formula:   where: R1 is H or NH2;         A compound 2-amino-7- (R) -3H,5H-pyrrolo[3,2-d]- pyrimidin-4-one wherein R is cyclohexenyl, cyclohexyl, or- CH2-Rι, and wherein R1 is an optionally substituted heteroalicyclic, pyridinyl or alicyclic group. R is -CH2-Rι and Ri is optionally substituted 2-, 3-, or 4-piperidinyl, 2- or 3- tetrahydrofuranyl, 2- or 3-tetrahydrothienyl, 2- or 3- pyrrolidinyl, 2-, 3-, or 4-tetrahydropyranyl, or 2-, 3-, 4- pyridinyl. R is optionally substituted cyclohexyl or 1-, 2-, or 3-cyclohexenyl. R is -CH2-Rι and Ri is optionally substituted cyclopentyl, cyclohexyl, cycloheptyl, l-or 2-adamantyl, 1- or 2-noradamantyl, 1- norbornanyl, 2-exo-norbornanyl, 2-endo-norbornanyl, 1- or 2-bicyclo[2.2.2]octanyl, 1-, 2-, 3-, 6-, or 8- bi cyclo [ 3.2.1 ] octany1 , 1-, 2-, 3-, or 9- bicyclo[3.3.1]nonanyl, or 1- or 2- norbornenyl. 5. A compound of the formula
Patent GE-P20012353-B (GE)
Title: Method for Production of Alcoholic Drink
Inventor: KAPANADZE GEORGE
IPC: C12G3/02
Filed: 1996-12-24
Abstract: 1. Technical Result Widening of assortment of alcoholic drinks.  2. Essence A method comprises crushing grape, removing crushed bunches of grape, placing the pulp into the fermentation vat, sulfitation of the pulp, introducing the pure yeast culture, fermentation, separating wine material from husks of grapes. During the fermentation 3,75-10 kg honey, 10g sulfurous anhydride and 50g of citric acid per 100 litres of fermentation mass are added.    3. Field of Application Food industry, in particular production of alcoholic drinks
Patent GE-P20043330-B (GE)
Title: Sauce “Satsebela”
Inventor: CHELIDZE GEORGE
IPC: A23L27/00
Filed: 2003-02-19
Abstract: 1. Technical Result Reduce of net-cost of sauce, improvement of organoleptic properties and widening of assortment. 2. Essence A sauce comprises (mass %) 50-70 puree of ripe and/or green fruits of tkemali, 20-50 fresh tarragon, 0,05-1,0 dry red pepper and 0,2-2,0 table salt. 3. Field of Application Food industry.
Patent GE-P20063964-B (GE)
Title: Method for manufacturing long loaf from a subtropical persimmon
Inventor: BERIDZE KETEVAN
IPC: A23L21/10
Filed: 2005-08-08
Abstract: A method provides separating pits from a persimmon, crushing and drying in two stages. Drying at the first stage is effected during 10 hours at temperature 550С, and at the second stage - within 8 hours at temperature 650С. After drying the persimmon mass is homogenized and hold. Into the homogenized mass olive oil, honey and-or sugar are added, then the obtained product is formed and packed, after formation introducing of a stuffing in the form of a filbert, a peanut, a walnut, a dried peach, dried plum or a feijoa is possible.
Patent GE-P20135949-B (GE)
Title: Elastic tensioning clamp and rail fixation
Inventor: STEIDL MICHAEL
IPC: E01B9/48
Filed: 2009-09-02
Abstract: There is represented clamp 40 comprising central loop 44 having two inner legs 46 connected by arc-shaped central portion 48, as well as nooses 42 connected to the inner legs of central loop, and running towards free ends of tensioning clamp 40. The nooses are formed so, as to have maximum height (H) at least of 20 mm in unloaded state, in preference, on 24 mm above upper plane (E2) of central loop 44 in two inner legs region. For fixation on clamps’ rails the terminal-block bolt 24 having head 26 is able to rest on inner legs of central loop.
Patent GE-P20125446-B (GE)
Title: New process for the synthesis of ivabradine and its pharmaceutically acceptable acid addition salts
Inventor: PEGLION JEAN-LOUIS
IPC: C07D223/16
Filed: 2010-03-29
Abstract: A process for the synthesis of the formula (IMG) or its pharmaceutically acceptable acid addition salts and its hydrates.
Patent CA-1328284-C (CA)
Title: Shaped refractory metal boride articles and method of  making them
Inventor: GESING ADAM J
IPC: C25C3/08
Filed: 1983-12-29
Granted: 1994-04-05
Abstract: ABSTRACT         A shaped refractory article of titanium diboride or other metal has a microstructure with a weight average grain diameter of from 0.5 to 5 microns and substantially no grains larger than 10 microns diameter, from 10% to 45% by volume being made up of interconnected pores the majority having a diameter not substantially greater than 5 microns, porosity and grain size being substantially uniform throughout the microstructure, the article containing not more than about 0.2% by weight of oxygen and not more than about 0.5% by weight of carbon.  The article may include inert particulate material in a matrix of the porous metal boride.  The article may be formed by forming a uniformly mixed body of reactants into shaped compacts and heating the compacts to cause evolution of carbon monoxide and formation of a coherent reaction sintered product.  Numerous reaction schemes are given, but the following are preferred: (1)       2TiO2 + B4C + 3C ? 2TiB2 + 4CO (2)        TiO2 + B2O3 + 5C ? TiB2 + 5CO   .
Patent CA-1264706-C (CA)
Title: Mailing cover with reply envelope and response device from integral web
Inventor: VOLK KURT E
IPC: B65D75/04
Filed: 1984-05-30
Granted: 1990-01-23
Abstract: ABSTRACT OF THE DISCLOSURE: A composite mailing wrapper, suitable for use with a magazine or catalog, having front and rear cover sheets joined along a longitudinal fold line. A reply envelope is detachably connected to the inside of the cover sheets and the composite wrapper is prepared from an integral web. A method of producing the wrapper from the web by way of folding, bonding and further folding operations is described.
Patent CA-1280104-C (CA)
Title: Tap or valve
Inventor: STEER PETER L
IPC: A61M39/00
Filed: 1985-07-08
Granted: 1991-02-12
Abstract: ABSTRACT                   TAP OR VALVE            A tap or valve comprising a first tube and a second tube with a flexible elastic coupling between said tubes to allow fluid passage between said tubes when said tubes are substantially coaxially aligned and to allow displacement of one of said tubes relative to the other in order to close said fluid passage.  The tap or valve is primarily intended for use with wire drawings tubing or intravenous drip tubing.  The tap or valve further comprises means for releasably locking the tap or valve in the closed position.
Patent CA-1279141-C (CA)
Title: Polyvinyl alcohol based wax-free size composition
Inventor: VASSALLO DONALD A
IPC: D06M101/16
Filed: 1985-08-15
Granted: 1991-01-15
Abstract: TITLE POLYVINYL ALCOHOL BASED WAX-FREE SIZE COMPOSITION            ABSTRACT OF THE DISCLOSURE         Polyvinyl alcohol based sizing solution containing a small amount of low ethylene oxide adduct of branched alcohol provides superior operability during sizing and weaving, and yields fabric that exhibits improved finishing performance.
Patent CA-1280134-C (CA)
Inventor: LAMPL HEINZ
IPC: A63C5/12
Filed: 1986-02-13
Granted: 1991-02-12
Abstract: Abstract of the Disclosure The ski comprises an intermediate layer between a top surface layer and a running surface, said intermediate layer comprising elements which have a parallelogram-shaped cross section and are inclined relative to the longitudinal center plane.  The elements are alternately given different hardness and/or compressibility and/or bending elasticity.
Patent CA-1297080-C (CA)
Title: Single-acting, gas-operated pump
Inventor: CREDLE WILLIAM S JR
IPC: F04B23/00
Filed: 1986-02-18
Granted: 1992-03-10
Abstract: Abstract of the Disclosure A single-acting, gas operated, pump method and apparatus including a pump body having a main chamber divided by a reciprocating piston assembly into a gas driving chamber and a liquid pumping chamber, a spring for biasing the piston assembly into one of its two end positions, a reciprocating control valve controlling the flow of driving gas to and from the gas driving chamber, a snap-acting spring mechanically coupling the control valve to the reciprocating movement of the piston assembly, and a counteracting spring for biasing the control valve toward one of its two positions.
Patent CA-1276166-C (CA)
Title: Carbonylation process
Inventor: GRATE JOHN H
IPC: C07C271/28
Filed: 1986-03-03
Granted: 1990-11-13
Abstract: ABSTRACT The invention provides a process for carbonylating a nitrogen-containing organic compound, selected from the group consisting of nitro, nitroso, azo, and azoxy compounds, by reacting said nitrogen-containing organic compound, with carbon monoxide, wherein the improvement comprises the step of:     (a)  reacting said nitrogen-containing compound with carbon monoxide, in the presence of a primary amine and a catalyst, essentially free of redox active metal components selected from the group consisting of rhodium and ruthenium.
Patent CA-1269671-C (CA)
IPC: C07C51/00
Filed: 1986-03-27
Granted: 1990-05-29
Abstract: The invention deals with a new process for preparing known 6-Alkoxy-5-trifluoromethyl-1-naphthoic acids. This process comprises (1) cyanating a 6-alkoxytetralone so as to form a 6-alkoxy-1-cyano-3,4-dihydronaphthalene, (2) converting the 6-alkoxy-1-cyano-3,4-dihydronaphthalene to a naphthoic acid precursor selected from a 6-alkoxy-1-cyanonaphthalene and a hydrocarbyl 6-alkoxy-1-naphthoate, (3) halogenating the naphthoic acid precursor to the corresponding 5-halo derivative, (4) trifluoromethylating the 5-halo derivative to replace the 5-halo substituent with a 5-trifluoromethyl group, and (5) hydrolyzing the resultant product to a 6-alkoxy-5-trifluoromethyl-1-naphthoic acid. The corresponding 6-alkoxy- 5-halo- or 6-alkoxy-5-trifluoromethyl-1-cyano-naphtalenes are novel intermediate products.
Patent CA-1280764-C (CA)
Title: Tetramethylcyclopropanecarboxylates
Inventor: NAUMANN KLAUS
IPC: A01N53/00
Filed: 1986-06-23
Granted: 1991-02-26
Abstract: TETRAMETHYLCYCLOPROPANECARBOXYLATES    ABSTRACT FOR THE DISCLOSURE           Pesticidal compositions useful in protecting plants and also in the hygiene field are disclosed.  The new tetramethylcyclopropanecarboxylates have the formula   where R represents mercapto, methylthio, alkylsulphinyl or alkylsulphonyl.
Patent CA-1311600-C (CA)
Inventor: COTONEA YVES
IPC: B01J19/00
Filed: 1986-07-04
Granted: 1992-12-22
Abstract: Procédé de fabrication de solutions concentrées de nitrate d'ammonium par neutralisation d'acide nitrique par l'ammoniac dans un réacteur tubulaire. Lorsque le débit global de réactifs correspond à une production inférieure a 150 kg/h/cm2 on effectue la neutralisation en présence d'un milieu constitué par un courant de recyclage de la solution concentrée de nitrate d'ammonium. Lorsqu'il est supérieur à 150 kg/h/cm2. On n'a pas besoin de recyclage.
Patent CA-1291375-C (CA)
Title: Process for chemically bonding a lubricant to a magnetic disk
Inventor: JANSSEN ROBERT A
IPC: G11B5/84
Filed: 1986-09-05
Granted: 1991-10-29
Abstract: PROCESS FOR CHEMICALLY BONDING A LUBRICANT TO A MAGNETIC DISK              ABSTRACT OF THE DISCLOSURE         A process for chemically bonding a lubricant to a magnetic disk by applying a functionalized polymeric lubricant to the disk, heating it until a significant portion bonds to the disk via the functional terminal group, and then reacting the unbonded residue with a chemical moiety, the residue then forming a mobile lubricant highly resistant to spin-off due to the presence of the bonded lubricant.
Patent CA-1280933-C (CA)
Title: Roll-formed submersible pump
Inventor: NIELSEN DARRYL M
IPC: F04D29/22
Filed: 1986-09-18
Granted: 1991-03-05
Abstract: Abstract of the Disclosure A submersible pump has a cartridge of pump stages that are compressed between an inlet base and a discharge head as a pump casing surrounding the cartridge  is roll-formed  to complementally engage shoulders on the base and the head.   The inner diameter of the casing presents a slight intererence fit with each of the pump stages so that a diffuser of each stage is held in a stationary position during operation of the pump.   The casing also provides a plurality of radially inwardly directed forces to maintain the stages in alignment with each other.   Complete circumferential contact of the diffuser walls with the interior surface of the casing reduces interstage leaking such that pump efficiency is enhanced.
Patent CA-1301254-C (CA)
Title: Adjustable magnetic supercutaneous device and transcutaneous coupling apparatus
Inventor: DRAKE GERALD E
IPC: A61N1/375
Filed: 1987-03-17
Granted: 1992-05-19
Abstract: Abstract of the Disclosure An externally worn body device adapted to be magnetically held in a supercutaneous position having a case, having a first surface adapted to be adjacent the supercutaneous position. A magnetic device is attached to the case for magnetically holding the case in the supercutaneous position. The magnetic device is moveable with respect to the distance of the magnetic device from the first surface of the case thereby allowing for adjustability in magnetic field strength at the first surface of the case. The magnetic device may be threadably attached to the case for screwably allowing movement of the magnetic device with respect to the first surface of the case. Optionally, the magnetic device may be affixed to the case once suitable adjustment has been made. The externally worn body device may further include a transmitting device positioned within the case for transmitting an electrical signal intended for transcutaneous reception. The externally worn body device may be combined with an implanted subcutaneous member which contains a magnetic device for providing an appropriate magnetic attraction to the corresponding supercutaneous magnetic device. The subcutaneous member may contain a receiving coil designed to cooperate with the transmitting coil of the externally worn body device for the reception of transcutaneous electrical signals.
Patent CA-1328002-C (CA)
Title: Power transmission
Inventor: BLATTER ALBERT
IPC: F15B21/02
Filed: 1987-04-07
Granted: 1994-03-22
Abstract: Abstract of the Disclosure An electrohydraulic system includes a plurality of electrohydraulic devices individually controlled by on-board microprocessor-based control electronics.   Each  individual device controller is connected to and addressable by a master controller for coordinating operation of the various devices. An electrohydraulic servo valve assembly includes a hydraulic manifold having a valve spool variably positionable therein under  control of a torque motor.   A microprocessor-based controller is connected to the torque motor and is mounted on the manifold by a cover which encloses and protects both the controller and the torque motor.   A watchdog timer in the microprocessor-based controller monitors pulsewidth modulated signals to the torque motor for terminating operation in the event of signal loss. In a preferred embodiment of the invention, the servo valve assembly is coupled to a linear actuator which has its position monitored by an electroacoustic transducer. Improved electronics couple the transducer to the control microprocessor.
Patent CA-1277380-C (CA)
Inventor: LEE JAMES C K
IPC: H01R43/16
Filed: 1987-04-16
Granted: 1990-12-04
Abstract: ANISOTROPIC ELASTOMERIC INTERCONNECTING SYSTEM             Abstract of the Invention Electronic assemblies are fabricated by stacking alternate connecting layers and component layers.  The component layers may be virtually any rigid structure having contact regions formed on at least one face thereof. The connecting layers are formed from anisotropic elastomeric conductors which in turn are fabricated by stacking a plurality of conductive sheets and insulating sheets, where the conductive sheets have a plurality of parallel elec-trically conductive elements formed therein.  By introducing a curable elastomeric resin into the stacked structure so formed, and then curing the elastomer, a solid elastomeric block having a plurality of parallel electrically conductive elements running its length is obtained.  Individual elastomeric conduc-tors suitable as connecting layers interfacing between adjacent component layers are obtained by slicing the block in a direction perpendicular to the conductors.
Patent CA-1284484-C (CA)
Title: Devices for supporting an lpg tank bracket of an lpg fork lift
Inventor: IZUMI AKIRA
IPC: B60K15/03
Filed: 1987-07-23
Granted: 1991-05-28
Abstract: ABSTRACT OF THE DISCLOSURE     This invention relates to devices for supporting an LPG tank bracket between overhead guard rear pillars of an LPG fork lift.   Each supporting device comprises a mounting member which is removably mounted around the rear pillar and a member for supporting one end of the tank bracket,  the supporting member being welded on the mounting member.   Therefere, the LPG tank bracket can be supported between the pillars. even if the rear pillars are not specially designed for an LPG fork lift.
Patent CA-1337578-C (CA)
Inventor: PRETZSCH KLAUS
IPC: C22B13/06
Filed: 1987-09-11
Granted: 1995-11-21
Abstract: A description is given of a method for removing thallium from pig-lead and high-purity lead by adding metal chlorides and/or chlorine gas, the removal of thallium being carried out in several stages at temperatures of between 350 and 400 °C, using a slight overall excess of metal chlorides or chlorine gas in relation to the thallium content, and the resulting thallium containing molten chloride being removed from the molten metal after each stage.
Patent CA-1298462-C (CA)
Title: Hot melt dispensing apparatus having offset hopper
Inventor: DIERINGER BRUCE G
IPC: B29B13/02
Filed: 1987-09-11
Granted: 1992-04-07
Abstract: Abstract of the Disclosure A hot  melt   dispensing   apparatus   for converting  solid  thermoplastic  material  to  molten thermoplastic material and for dispensing the molten thermoplastic material comprises a solid thermoplastic material  receiving  hopper,  a  vibrated  feed  chute mounted beneath a bottom opening in said hopper, which vibrated feed chute has a discharge opening laterally offset from the vertical plane of the hopper, and a heated reservoir mounted beneath the discharge end of the  feed chute.   The reservoir is laterally offset from the hopper so that heat rising from the reservoir does not melt solid thermoplastic material contained within  the  hopper  or within  the  feed  chute.   The hopper is rectangular in configuration and comprises three  vertical  walls  and  one  sloping  wall  angled relative to a bottom discharge opening of the hopper.
Patent CA-1289202-C (CA)
Inventor: WINNERL JOSEF
IPC: H01L27/08
Filed: 1987-09-24
Granted: 1991-09-17
Abstract: ABSTRACT OF THE DISCLOSURE        A latch-up protection circuit for an integrated circuit using complementary MOS circuit technology has a substrate bias generator that applies a negative substrate bias to a semiconductor substrate having a p-conductive material into which a well-shaped semiconductor zone of n-conductive material is inserted.  In order to avoid latch-up effects in the integrated circuit, an electronic protection circuit interrupts the capacitive charging currents of a capacitor in the well-shaped zone depending on the potential of the semiconductor substrate which is taken at a doped substrate bias terminal.  The electronic protection circuit disconnects a capacitor bias generator from the capacitor when a voltage on the substrate bias terminal is less than a sum of a reference potential and a threshold voltage of a first transistor in the electronic protection circuit.  The electronic protection circuit connects the capacitive bias generator to the capacitor when a voltage on the substrate bias terminal is greater than the sum.  The electronic protection circuit does not current load a supply voltage source or a substrate bias voltage source which are connected to the integrated circuit.
Patent CA-1300255-C (CA)
Title: Surface wave delay line with antireflective electrodes
Inventor: LAROSA RICHARD
IPC: H03H9/42
Filed: 1987-12-17
Granted: 1992-05-05
Abstract: DOCKET R4303.01 EAO:kaf SURFACE WAVE DEVICE WITH ANTIREFLECTIVE ELECTRODES     ABSTRACT OF THE DISCLOSURE     A surface wave acoustic delay line is formed of a set of electrode assemblies disposed on the surface of a block of crystalline material propagative of a surface acoustic wave.  In each of the assemblies, the electrodes are arranged in an interdigitated pattern.  Reflected waves are cancelled by the construction of an additional electrode in each of an electrode assembly, the additional electrode extending only one-half the distance of the other electrodes and being spaced from an adjacent electrode by one-quarter wavelength.  This introduces a 180° phase shift between portions of reflected waves which then cancel to remove the reflection.  Also, in the case of closely spaced electrode assemblies, additional electrodes, equal in shape and size to the electrodes of the assemblies, are introduced between the assemblies in the form of a grid which propagates surface waves without reflection.
Patent CA-1319848-C (CA)
Inventor: ARAI AKIHIRO
IPC: G03B15/05
Filed: 1988-01-13
Granted: 1993-07-06
Abstract: A04-47967M(87)YO/87 ABSTRACT OF THE DISCLOSURE A  built-in  flash  system  is  disclosed  which includes a housing chamber provided in the upper front of a penta-house of a finder optical system, and a casing provided in the housing chamber and having a flashlight emitter arranged so as to be movable between a projecting position where the casing is projected for light emission and a housing position where the casing is housed in said housing chamber,  the  casing  is  arranged  to  be  moved between the projecting position and the housing position by a linkage mechanisms disposed at sides of said built-in flash system.
Patent CA-1337326-C (CA)
Title: Composition and method of stabilizing o-halopyridylphosphates
Inventor: VAN HORN ROY L
IPC: A01N57/16
Filed: 1988-01-18
Granted: 1995-10-17
Abstract: Compositions containing an O-halopyridyl-phosphate insecticide and wood flour and methods for protecting stored grains and plants from insect damage.
Patent CA-1300058-C (CA)
Title: Process for preparing activated killer cells
Inventor: IRR JOSEPH D
IPC: C12N5/02
Filed: 1988-01-26
Granted: 1992-05-05
Abstract: TITLE IMPROVED PROCESS FOR PREPARING      ACTIVATED KILLER CELLS                 ABSTRACT OF THE DISCLOSURE There is disclosed an improved process for preparing lymphokine activated killer cells or tumor-infiltrating lymphocytes, the improvement comprising culturing precursor cells in a closed container made form copolymeric film material having a specified O2 permeability, selected from specified materials, and having a thickness of from about 0.04 mm to about 0.23 mm.