baber/WOPTO huggingface dataset:
Patent EP-1095117-B1 (EP)
Inventor: HAMERSKI MICHAEL D
IPC: C09J7/22
Filed: 1999-02-08
Granted: 2004-04-28
Abstract: An abrasive article adapted for removable adhesive bonding on a support surface, such as a wall, includes a base member and a stretch release adhesive tape strip. The adhesive tape strip is a sequential release-type adhesive strip having a non-adhesive end portion which allows the base member to release from the adhesive strip during the removal process while the adhesive strip remains adhered to the support surface, therefore reducing the incidence of unwanted catapulting. To prevent relative movement between the base member and the adhesive strip during the removal process and therefore increase the likelihood of successful controlled sequential release of the base member, the base member includes a stabilizer arranged to abut the adhesive strip if the base member shifts as the adhesive strip is stretched during removal. The stabilizer can be a generally rigid projection or a compressible stop member which extends outwardly from the end of the base member adjacent the end of the adhesive strip.
Patent EP-1150933-B1 (EP)
Inventor: FISHER PAUL D
IPC: C08K5/00
Filed: 1999-11-19
Granted: 2003-12-03
Abstract: This invention relates to a stable aqueous silane emulsion with constant particle size. The emulsion comprises a continuous water phase, a discontinuous silane phase, and an emulsifier system. The emulsifier system contains a primary surfactant and a cosurfactant. The primary surfactant functions to prevent coalescence of particles, by steric or ionic repulsion between particles. The cosurfactant prevents diffusion of the silane into the aqueous phase. The combination of primary surfactant and cosurfactant results in an adsorbed inner layer of cosurfactant between the silane and the outer layer of a mixture of both surfactants which contacts the water phase. The combination of primary surfactant and cosurfactant provides a barrier which prevents diffusion of silane into the water phase. A method for preparing the emulsion is also disclosed.
Patent EP-1126024-B1 (EP)
Inventor: NISHINO TOKUZO
IPC: C12R1/07
Filed: 1999-11-16
Granted: 2005-01-12
Abstract: Bacillus sp. NTAP-1 having been deposited under accession number FERM BP-6926; and a collagen-decomposing enzyme produced by bacterium. The above enzyme (1) has a capability of hydrolyzing, at the highest efficiency, collagen and gelatin from among casein, gelatin, albumin and collagen; (2) shows the optimum pH of 3.5 to 4.5; (3) shows the optimum temperature of 65 to 70 DEG C; (4) after heating at 60 DEG C at pH 6.0 for 4 hours, sustains an activity amounting to 60% or more of the level before the heat treatment; (5) remains stable at pH 3 to 6; and a molecular weight of approximately 46,000 when measured by SDS-PAGE.
Patent IT-1309219-B1 (IT)
Inventor: BUGATTI VITTORIO
IPC: F16K31/60
Filed: 1999-06-18
Granted: 2002-01-16
Abstract: The invention concerns a valve or tap for fluids, with a stopper that rotates controlled by a control rod equipped with a throttle or grip lever fixed to said rod by means of a fastening screw. The throttle or grip lever has at least one blocking notch (19, 20), designed to fit tightly with a catch (18), which is part of the valve body in order to prevent the stopper from turning. The fastening screw (15) has a special head that allows it to be screwed/unscrewed only with a specific wench or tool, thereby preventing tampering.
Patent IT-1275814-B1 (IT)
Inventor: SANTI ROBERTO
IPC: C08F4/659
Filed: 1995-10-27
Granted: 1997-10-17
Abstract: Process for the preparation of crystalline vinylaromatic polymers with a predominantly syndiotactic structure which comprises polymerizing the vinylaromatic monomers, alone or mixed with at least another copolymerizable ethylenically unsaturated monomer, in the presence of a catalytic system essentially consisting of:   a) an adduct between a derivative of titanium having the formula R1R2R3R4Ti and a calix-ÄnÜ-arene, or an oxa-calix-ÄnÜ-arene; b) a co-catalyst selected from an alkylalumoxane and a compound of boron having the formula (II): BX1X2X3 or its salt.
Patent IT-1282403-B1 (IT)
Title: Multi-processor system - comprises two microprocessors, one device shareable and accessible by microprocessors, buffer connected to each microprocessor, and arbitration device for enabling access by microprocessors to device
Inventor: MODENA MARCO
IPC: G06F15/16
Filed: 1996-05-03
Granted: 1998-03-20
Abstract: The multi-processor system comprises two microprocessors, a first device shareable and accessible by the microprocessors and a buffer connected to each of the microprocessors. Each buffer is connected to the first device. An arbitration device enables the access of the microprocessors to the first device.
Patent IT-1289549-B1 (IT)
Inventor: CAZZOLARO SERGIO
IPC: E04F15/06
Filed: 1996-12-31
Granted: 1998-10-15
Abstract: There is disclosed an assembly of board for floor boarding and means for fixing the same to adjacent boards, said board comprising a frame (100), of generally rectangular shape, suitable for accommodating therein a flooring surface, such frame comprising a first pair of opposite beams (1) and a second pair of opposite beams (2) connecting the first pair of beams (1). The beams (1) of said first pair are provided, at least at their ends, with recesses suitable for housing clamps (101, 102, 103) for coupling the board with adjacent boards. The recesses are associated to releasable snap engagement means (73-75) that engage in respective seats (76) provided for on the clamps (101-103) to prevent the clamps from slipping out of said recesses. <IMAGE>
Patent IT-1296995-B1 (IT)
Title: Bobbin sleeve grip pneumatic drive - has a differential cylinder to give a variable grip force on the bobbin sleeve to prevent sleeve damage
Inventor: ENGER JURGEN
IPC: F15B1/02
Filed: 1997-12-19
Granted: 1999-08-03
Abstract: The pneumatic drive, to open and close the bobbin sleeve grip at a bobbin doffer assembly in a textile machine, has a differential cylinder (11) which is subjected to compressed air selectively on both sides of the piston rod (10) or only on the side away from the piston rod (10). This gives a variable clamping force on the bobbin sleeve, when the piston rod (10) is extended and the bobbin sleeve grip is closed at the end position of the piston rod (10).
Patent IT-1268009-B1 (IT)
Inventor: MASSE GIACOMO
IPC: A61F2/00
Filed: 1994-02-04
Granted: 1997-02-20
Abstract: A femoral prosthesis for the joint between the hip and the femur, of the type comprising a metal stem (2) for inserting in a cavity (14) of the bone after resecting same, an elliptical collar (7) of greater section in comparison with the stem integral thereto, a neck (10) integral with the collar and connectable to a spherical head (12) for connection with an acetabulum seat. The lower surface (6) of the collar (7) is for stopping and resting on the plane of resection (17). The centre of rotation of the prosthesis, comprising its acetabulum seat, is positioned on the axis (E) of the neck (10) at a distance ranging within a minimum of 19 mm and a maximum of 31 mm from the lower surface (6) of the collar (7). <IMAGE>
Patent IT-1282173-B1 (IT)
Title: Coating method simulates e.g. heavy marble or wood to enhance lightweight structures - using fixed background powder layer and slow drying colour suspension modified by mechanical tooling to simulate grain or whorls and baking to durable finish resisting tearing and salt spray tests
Inventor: FLAMINIO MARIAROMANO
IPC: C09D/
Filed: 1995-11-23
Granted: 1998-03-16
Abstract: This method coats surfaces, decorating them with coloured powders. In the new method the surface is treated (e.g. by applying electrostatic charge) and a layer of powdered background colouring is applied. The surface is heated to below the baking temperature of the powder, sufficiently however, to fix it to the surface. One or more motif colour powders are applied, in the pattern of the motif. Now the surface is baked over a time and temperature profile, which fixes the powder. Pref. before applying the motif powder, a further layer of background colour powder is applied and heated, a process which may be further repeated. The surface is metal, metal alloy, wood, glass, ceramic or plastic. The covered surface is heated to 75-90[deg]C. The surface is heated on a line, passing before the heat source, or an ultraviolet source. Heating panels may be used, or heat lamps. In a modification the powder is coated and heated; to be coated with a suspension of powder in a slow drying liq.. The liq. is an acrylic cpd.. The liq. is slow-evaporating. In the interests of decoration, various selective removal (or redistribution) techniques may be applied, e.g. suction, wiping, wet wiping, manual or mechanical tooling. A silkscreen stencil may be used to apply the powdered coating in the decorative pattern.
Patent JP-2895054-B1 (JP)
Title: ピン打ち機
IPC: B23P19/02
Filed: 1998-05-11
Granted: 1999-05-24
Abstract: 【要約】
【課題】  多仕様のコイル製造に対応する。
【解決手段】  コイル等を構成するボビンに所定長さの 端子ピンを打ち込むピン打ち機において、ボビンを移動 自在に保持するボビン保持手段と、ピン用線条材供給手 段から順次供給されるピン用線条材に所定間隔で潰しを 入れて潰し部を形成させる共に、該潰し部が形成された ピン用線条材を所定の移送量だけ移送させるグリップ手 段と、グリップ手段によって送り込まれたピン用線条材 を前記ボビンのピン挿入孔に該当する位置に固定すると 共に、グリップ手段によるピン用線条材の潰し部がピン 用線条材の先端近傍となるように該ピン用線条材を順次 切断する線条材カット手段とを備え、ボビン保持手段に よってボビンを移動させてピン用線条材の先端をボビン に圧入し、線条材カット手段によってピン用線条材を切 断する。
Patent JP-3106196-B1 (JP)
Title: ＴｉＡｌ−Ｔｉ基合金焼結接合体の製造方法
IPC: F01L1/18
Filed: 1999-06-11
Granted: 2000-11-06
Abstract: 【要約】
【課題】  パルス通電加圧によりTｉＡｌ合金、例えば エンジンバルブのような傘部と軸部を持つ焼結体等を製 造する際に、該焼結体の結晶粒の粗大化を抑制し、空孔 の発生を抑え、全体に亘って緻密な組織を得る。また高 温の熱を受ける部位にTｉＡｌ合金を使用し、一部に一 体化した靭性の高いチタン基合金を用い、全体としてT ｉＡｌ合金の特性を向上させ、コスト低減と高品質の材 料を得る。
【解決手段】  Ｔｉ １−ｘ Ａｌ ｘ （０．３９≦ｘ≦０． ５９、ｘ：原子分率）の割合からなる混合粉末若しくは 合金粉末又はこれらを主成分とする焼結用粉末と、前記 以外のＴｉ基合金粉末又はＴｉ基合金溶製体とを焼結と 同時に接合する。必要によりさらに１０００〜１３００ °CでＴｉＡｌ合金部を押出し加工することを特徴とす るＴｉＡｌ−Ｔｉ基合金焼結接合体の製造方法。
Patent JP-3001545-B1 (JP)
Title: ベクトルデータ処理装置
IPC: G06F17/16
Filed: 1998-11-17
Granted: 2000-01-24
Abstract: 【要約】
【課題】  ベクトルデータ制御装置において、ベクトル レジスタ間でのベクトルデータ移送命令を実行する際、 移送後のベクトルデータのマスク情報の生成とマスクレ ジスタへの格納を高速に行う。
【解決手段】  ベクトルレジスタ１０及びベクトルレジ スタ２０間のデータ移送命令が命令制御部７０より発行 されたとき、マスクレジスタ部６０内のＶＣＲ６１から データの移送にともない順次読みだされ、移送先のベク トルレジスタ２０へのデータの書き込み制御に使用され るマスクビットを移送後のベクトルデータのマスク情報 として、データ移送処理と並行し、マスクレジスタ部６ ０内のＶＣＲ６１またはＶＭＲ６２への書き込みを行 う。
Patent JP-2910750-B1 (JP)
Title: ディスクアレイシステム及びそのシステムをコンピュータによって制御するためのプログラムを記録した記録媒体
IPC: G06F3/06
Filed: 1997-12-25
Granted: 1999-06-23
Abstract: 【要約】
【課題】  ディスクアレイシステムを構成する複数のデ ィスク装置のうち２台において異常が発生した場合で も、異常が発生していないディスクの記憶内容を読出 す。
【解決手段】  磁気ディスク装置群１０８のうち、１つ のディスク装置のみに異常が発生したとき異常が発生し ていないディスク装置の記憶内容に基づいて異常が発生 したディスク装置の記憶内容を復元する。２つのディス ク装置に異常が発生したとき磁気ディスク装置群１０８ の全ての記憶内容の読出しの許可を行う。これにより、 ２台以上に障害が発生した場合でも、正常な領域に記憶 されているデータを読出すことができる。異常が発生し ているディスク装置の台数は、２つのフラグをセットす ることによって管理する。
Patent MD-4830-B1 (MD)
Title: Method for producing a perforated Au nanomembrane
Inventor: MONAICO Eduard
IPC: H01L21/3063
Filed: 2020-06-09
Abstract: The invention relates to the nanostructured materials production technology, in particular to methods for producing metal nanostructured membranes.The method, according to the invention, comprises the electrochemical deposition in a pulsed mode on an n-GaAs substrate of an Au film, at room temperature, for 2 min and anodization, at room temperature, with the application of a voltage of 4 V, with subsequent detachment of the Au film and obtaining of a perforated Au nanomembrane.
Patent MD-4856-B1 (MD)
Title: Acoustic guitar with vibrating resonator
Inventor: ISTRATI Lilian
IPC: G10H3/18
Filed: 2021-06-30
Abstract: The invention relates to stringed plucked string musical instruments, in particular to acoustic guitars with vibrating resonator.The guitar, according to the invention, comprises a body with a rosette and a tailpiece, and a neck with strings. Inside the body is placed a vibrating resonator, made of wood, which contains a contact support (1), connected to a resonator plate in the form of a trapezoid (2), in the center of which is made an elongated leg (3) with an annular end, placed in an annular groove (4), made in the plate (2). The elongated leg (3) is separated from the edges of the plate (2) by means of straight parallel grooves (5), made therein. The support (1) of the resonator is placed under the tailpiece of the guitar body and is connected to it by means of fasteners, and the plate (2) is placed at an angle of 5…7° relative to the guitar body.
Patent NO-325908-B1 (NO)
Inventor: LUNDBY STEIN A
IPC: H04L1/08
Filed: 2001-09-07
Abstract: A method and apparatus for maximizing the use of available capacity in a communication system having a base station and a plurality of mobile stations. The forward link includes a plurality of traffic streams sent on at least one channel from the base station to the mobile stations. The forward link is subject to a maximum power ceiling. A first output power level associated with simultaneously transmitting a first set of one or more traffic streams on the forward link is initially determined. Next, the first output power level is compared to the maximum power ceiling; and at least one time frame in the forward link having available capacity for transmitting a portion of at least one further traffic stream is identified. The first set of traffic streams and the portion of the at least one further traffic stream are then transmitted simultaneously during the at least one frame on the forward link.
Patent NO-330356-B1 (NO)
Inventor: FROEHLING PETER ERNST
IPC: C08G85/00
Filed: 2001-09-25
Abstract: The invention relates to a condensation polymer, as well as to a process for preparation said polymers, having at least one dialkylamide endgroup connected through the polymer backbone to a unit derived from an alkylamide, the connection comprising at least one ester linkage. The polymer according to the invention can be linear or branched. The condensation polymers can be very widely used in technically different fields, both in thermosetting and in thermoplastic applications. The invention also relates to a composition comprising the condensation polymer according to the invention, an active substance and a polymer, as well as to a process for incorporating an active substance in an object comprising at least of a polymer composition, by bringing the object into contact with the active substance. More in particular, the invention relates to the dying of polymer fibres.
Patent NO-322763-B1 (NO)
Inventor: FELDCAMP EDWARD GEORGE
IPC: B29C48/32
Filed: 2002-10-01
Abstract: An extrusion die comprises a die body defining a die cavity (18). The cavity (18) is shaped such that the die body includes a male portion (24) and a female portion (26). A leading edge (18a) of a part of one side of the die cavity (18) is out of alignment with a leading edge (18a) of an opposing part of the die cavity (18), at rest, such that, in use, when deflection of parts of the die occurs, the leading edges (18a) substantially align.
Patent NO-325464-B1 (NO)
Inventor: DELITZ ALEXANDER
IPC: G07B17/00
Filed: 2003-12-30
Abstract: The invention relates to a method for verifying the authenticity of a franking note placed on a postal article. According to the invention, cryptographic information contained in the franking note is decoded and used for verifying the authenticity of the franking note. The inventive method is characterized in that the reading unit graphically records the franking note and transmits it to a verification unit and in that the verification unit controls a sequence of partial tests.
Patent NO-331832-B1 (NO)
Title: Additivblanding for fraktureringsfluider, og fremgangsmate for frakturering av en underjordisk formasjon
Inventor: CREWS JAMES B
IPC: C09K8/62
Filed: 2004-03-18
Abstract: Det er oppdaget at bionedbrytbare og ikke-giftige gelatdannende middelblandinger kan utføre flere gunstige funksjoner i et vandig fraktureringsfluid ·	ved hjelp av gelatdannelse av ioner. Noen av de multiple funksjoner inkluderer forskjellige kombinasjoner av de følgende: demulgerende middel, demulgerende middelforsterker, kryssbindingsforsinkelsesmiddel, kryssbundet gel stabiliserende middel, enzymbryter stabiliserende middel, og lignende. Noen av de gelaterende midler anvendt i blandingene inkluderer men er ikke nødvendigvis begrenset til na triumpolyaspartat, natriumiminodisuksinat, dinatriumhydroksyetyleniminodiacetat, (Na2HEIDA); natriumglukonat, natriumglukoheptonat, sukkeralkoholer; monosakkarider; disakkarider; og blandinger derav.
Patent NO-333158-B1 (NO)
Title: Handteringssystem for en utblasingssikringsstakk
Inventor: ZAHN BALDWIN
IPC: E21B19/00
Filed: 2004-05-03
Abstract: Fremgangsmåte og anordning for håndtering av utblåsingssikringsstakker. I én utførelse inkluderer håndteringssystemet en vogn, en skliramme, hvilken tilveiebringer en basisplattform, en vipperamme og en løfteramme. Stakken er festet til løfterammen, som er glidende båret av vipperammen, som er dreibar i forhold til vognen. Vognen sørger for posisjonsjustering av stakken i en første horisontal retning, mens posisjonsjustering i en andre, perpendikulær horisontal retning er sørget for ved hjelp av en sidejusteringsmekanisme som forbinder vipperammen og vognen. Løfterammen kan beveges vertikalt i forhold til vognen, og sørger også for rotasjonsjustering av stakken om sin senterakse.
Patent NO-334916-B1 (NO)
Inventor: LINDER RUDOLF
IPC: A61K9/70
Filed: 2004-12-27
Abstract: A topical pharmaceutical preparation for administering a slightly soluble PDE 4 inhibitor is described. A surprisingly good systemic bioavailability is observed with this dosage form.
Patent NO-335365-B1 (NO)
Title: Enkeltkjedede, rekombinante T-cellereseptorer, multivalent T-celle reseptor (TCR)-kompleks, nukleinsyre-molekyl omfattende en sekvens som koder for en scTCR og dennes vektor samt et preparat; fremgangsmåte for å påvise en TCR-ligand og fremgangsmåter for å identifisere en inhibitor eller potensiell inhibitor av interaksjonen mellom en scTCR og en TCR-ligand
Inventor: JAKOBSEN BENT KARSTEN
IPC: G01N33/68
Filed: 2005-05-04
Abstract: En enkeltkjedet, T-cellereseptor (scTCR) som omfatter et segment som utgjøres av en TCR-a-kjedevariabelregionsekvens fusjonert med N-terminalen til en TCR-akjedekonstantregionekstracellulærsekvens, et ß-segment som utgjøres av en TCR-ßkjedevariabelregion fusjonert med N-terminalen til en TCR-ß-kjedekonstantregionekstacellulærsekvens, og en linkersekvens som binder sammen C-terminalen til a-segmentet med N-teminalen til ß-segmentet eller vise versa, der konstantregionekstracellulærsekvensene til a- og ß-segmentene er bundet sammen med en disulfidbinding, der lengden på linkersekvensen og posisjonen til disulfidbindingen er slik at variabelregionsekvensene til cc- og P-segmentene er gjensidig orientert vesentlig som i native aß-T-cellereseptorer. Komplekser av to eller flere slike scTCRene, og anvendelse av scTCRene ved terapi og i ulike sereeningsapplikasjoner, blir også tilkjennegitt.
Patent NO-327655-B1 (NO)
Title: CGRP-reseptorantagonister, farmasoytisk preparat og anvendelse av forbindelsene for fremstilling av et medikament
Inventor: BURGEY CHRISTOPHER S
IPC: A61K31/55
Filed: 2005-11-14
Abstract: Foreliggende oppfinnelse er rettet mot forbindelser med formel (I): (hvori variablene er R1, R og R3 er som definert heri), som er anvendbare som antagonister av CGRP-reseptorer og anvendbare i behandling eller forebyggelse av sykdommer hvori CGRP inngår, for eksempel hodepine, migrene og "duster headache". Oppfinnelsen er også rettet mot farmasøytiske preparater som omfatter disse forbindelsene og anvendelse av disse forbindelsene og preparatene for forebyggelse eller behandling av sykdommer hvori CGRP inngår.
Patent NO-341274-B1 (NO)
Inventor: JEROENSE MARC
IPC: H01B7/282
Filed: 2009-07-10
Abstract: An electric power cable, comprising; at least one electric conductor (1); an electric insulation (2) surrounding said conductor (1) and comprising a polymer; a tubular protective sheath (3) surrounding said electric insulation (2) and acting as a water barrier that prevents water intrusion into the electric insulation (2). The cable comprises at least one density-raising element (4) of a material of higher density than the material of the protective sheath (3).
Patent NO-331233-B1 (NO)
Title: Barnestol
Inventor: OPSVIK PETER
IPC: A47D1/00
Filed: 2010-06-24
Abstract: Det er beskrevet en barnestol som er innrettet for å festes på en moderstol. Barnestolen omfatter en stoldel med et nedre stoldelparti og et øvre stoldelparti hvor barnestolens øvre stoldelparti er innrettet for dreibar og avtakbar festing til moderstolen. Barnestolen omfatter videre minst ett støtteelement med et første endeparti og et andre endeparti hvor det første endepartiet er dreibart festet til barnestolens stoldel og det andre endepartiet er innrettet for dreibar og avtakbar festing til moderstolen. Barnestolen er således utformet slik at stoldelen kan justeres mellom en liggeposisjon og en sitteposisjon for et barn.
Patent PL-90640-B1 (PL)
Title: Cationic dyes containing an optionally substituted bicyclic or polycyclic aryloxyalkyl group[US4048151A]
IPC: C07D307/91
Filed: 1973-07-31
Abstract: Disclosed are basic dyes free from sulphonic acid groups of the formula <IMAGE> in which F+ signifies a cationic group-containing residue of a dye such as an azo, styryl, azomethine, methine, anthraquinone, nitro or triphenylmethyl dye, X SIGNIFIES 1, 2 OR 3, Y SIGNIFIES 1, 2, 3 OR 4, A+ signifies an anion, and Q signifies an optionally substituted biphenylyl, dibenzofuranyl, carbazolyl, dibenzothiophenyl, dibenzothiophendioxydyl, dibenzothiophenmonoxydyl, fluorenyl or fluorenonyl radical, and R1 signifies hydrogen, phenyl, cycloalkyl, unsubstituted C1-4 alkyl or C1-4 alkyl substituted by halogen, C1-4 alkoxy or phenoxy.
[US4048151A]
Patent PL-133238-B1 (PL)
Title: Method of obtaining mineral fibres and apparatus therefor
IPC: C03B37/05
Filed: 1982-02-24
Abstract: The invention relates to a process and apparatus for the manufacture of fibers from attenuable materials, such as glass making materials, by centrifugation. In a process in which the attenuable material is directed onto the peripheral surface of a centrifugation wheel which is enveloped by a gas current produced by a blowing crown, the invention comprises the projecting onto the fibers of a liquid composition from a centrifugation element, the projection being carried out close to the wheel in the form of drops which penetrate and are atomized by the gas current. The apparatus of the invention includes a projection element rotating with the centrifugation wheel for centrifugal delivery of the drops of liquid composition. The invention provides a very uniform treatment of the fibers, particularly by means of liquid binder compositions.
Patent PL-130895-B1 (PL)
Title: Process for preparing novel derivatives 6-alfa-methyl-hydrocortisone
IPC: C07J5/00
Filed: 1981-12-21
Abstract: 6 alpha -methylhydrocortisones of Formula I  <IMAGE>  wherein R1 is alkanoyl of 2-6 carbon atoms or benzoyl and R2 is hydrogen or alkanoyl of 2-6 carbon atoms have valuable antiinflammatory properties.
Patent PL-146525-B1 (PL)
Title: Method of obtaining novel derivatives of 1-cyclopentylobutyn-3-none-2
IPC: C07C49/255
Filed: 1985-10-09
Abstract: The compound of the Formula I <CHEM>  wherein  R<1> and R<2> are hydrogen or an ether forming group; and X is hydrogen, halo, trifluoromethyl, lower alkyl or lower alkoxy. These compounds are useful intermediates for aking PGE and PGF derivatives having an allenic function.