baber/WOPTO huggingface dataset:
Patent NL-7202536-A (NL)
Title: Magnetic memory cores - of ferromagnetic ferrite, with wider range of working temps
IPC: C04B35/26
Filed: 1972-02-25
Abstract: Ferromagnetic ferrite memory cores, which have outer dia. 0.9 mm and inner dia. > half the outer dia., have the compsn. MnaMgbZncodFeeOf, where 0.4  a 1.1, 0.1  b 0.7, 0  c 0.3, 0.002  d 0.06, 1.5  e 2, a + b + c + d + e = 3 and 3.9  f 4.1. The ferrites are esp. prepd. by evapn. of a soln. of salts of Fe (III), Mn, Mg, Zn and Co in a hydroxy-acid or an unsatd. acid, followed by sintering. The cores have good dynamic rectangularity, i.e. rVI/wvz >3.5, where rVI is the max. outlet tension of the interference mono-signal and wVz is that of the nul-signal. They have low switching coefft. and low temp. sensitivity of the dynamic characteristics in the range 20-60 degrees C. The cores are esp. used in two cores per bit memories.
Patent NL-7302363-A (NL)
Title: Allopurinol prodn - by hydrolysis of 4-chloro-pyrazolo (3,4-d)-pyrimidine
IPC: C07D487/04
Filed: 1973-02-20
Abstract: Prepn. of 4-hydroxy-pyrazolo 3,4-d pyrimidine (allopurinol) (I) by subjecting 4-chloro-pyrazolo 3,4-d -pyrimidine (II) to alkaline hydrolysis in the presence of hydrogen peroxide. (I) is a known xanthine oxidase inhibitor useful in the treatment of gout. The hydrolysis proceeds almost quantitatively and yields a partic. pure product. The starting material (II) need not be isolated before hydrolysis to (I); in fact, the (II)-contg. reaction mixt. obtd. by the procedure of DT.1950076 can be used directly as the starting material.
Patent NL-7303798-A (NL)
Title: Electrical heating element prodn. - by coating heat-resistant non-conductive support with mixt of organopolysiloxane, graphite powder and organic solvent
IPC: H01B1/24
Filed: 1973-03-19
Abstract: Electrical heating element is produced by coating the surface of a heat-resistant electrically non-conductive support with a mixt. of an organo-polysiloxane (silicone resin) (I), graphite powder (II), and an organic solvent esp. for (I), and heating the coated support to 250-450 degrees C, e.g. for 80-300 mins., after drying. In a pref. modification, coating mixt. also contains powdered electrical insulator, esp. SiO2, mica, and/or MgO. Coating compsn. pref. contains by wt. 100 pts. (I), 80-250 pts. (II), sufficient solvent and opt. insulator. Pref. support consists of asbestos, heat-proof glass, ceramic, and/or heat-resistant fibre-reinforced plastic.
Patent NL-7306517-A (NL)
Title: Light flexible tube cooler for preserving frozen prods - having gel cooling reservoirs contained in plastic outers
IPC: F25D3/00
Filed: 1973-05-10
Abstract: The cooler is a flexible tube, pref. plastic, which has a number of solid reservoirs attached to its outer surface. These are gel systems contained in plastic outers which are basically cylindrical and which are connected to the tube at each end. A cooling medium is passed through the tube which may be wound on the outside of a container and the gels maintain the required temp. over long periods. They may be recharged by passing freshing cooling medium through the tube. The cooler is suitable for cooling transport containers.
Patent NL-7314534-A (NL)
Title: Exhaust fume scrubber - in which gas drawn in by liquid ejector is forced through a settling tank
IPC: B01D47/02
Filed: 1973-10-23
Abstract: An exhaust fume scrubber comprises an ejector, to which liquid is pumped at high pressure and velocity, and from which turbulent mixture passes to a settling tank for solid contaminants. The tank has a partition, with an aperture connecting to a pipe unmerged in liquid; and purified fumes vent from this second section. Liquid is recycled from the settling tank, within which levels are controlled by overflow valves. Fumes may be vented to atmosphere, through a chimney, without further purification.
Patent NL-7602374-A (NL)
Title: Benzodiazepine prepn - by condensn of 1-haloacetamido benzoyl cpds with hexamine and derivs in presence of ammonium carbonate or acids
IPC: C07D243/14
Filed: 1976-03-05
Abstract: of formula (I): (where R1 is H, NO2 or halo; R2 is H, Me, t-Bu, diethylaminoethyl or CONH2; R3 is phenyl, pyridyl, 2-monohalopyridyl, 2,6-dihalopyridyl, or cyclohexenyl) are prepd. by cyclisation of a cpd. (II) (where Y is halo) with hexamine or its derivs. in presence of an agent which inhibits formation of imidazolidones. (I) are inhibitors of imidazolidone formation include ammonium carbonate and acids. Nitroso or dinitroso derivs. of hexamine may be used.
Patent NL-7602701-A (NL)
Title: X-ray scanning system - with multiple detectors providing detailed absorption data for a body under examination
IPC: A61B6/03
Filed: 1976-03-15
Abstract: In a system for examining a body by means of penetrating radiation, having (i) a source irradiating the body with a flat beam, (ii) a detector unit for the detection of the radiation and emission of output signals related to the absorption of the radiation by the body, intended to be processed to produce a representation of the distribution of the absorption in a plane section through the body and (iii) a device for scanning of the flat beam of radiation relative to the body, in order to irradiate the section along a series of beam paths passing through the body from differing directions, (a) the detector unit comprises a series of detectors, a pre-determined number of which are irradiated at any instant by the beam of radiation, and (b) the scanning device moves the beam of penetrating radiation over the detectors in order progressively to change the detectors irradiated. Advantageously a mechanism moves the source with respect to the body in order to produce at least part of the scanning by the beam of radiation.
Patent NL-7608413-A (NL)
IPC: G01N33/48
Filed: 1976-07-29
Abstract: A multichamber cuvette for maintaining in independent and separate condition at least two reactants until such time that it is desired to mix them for reaction with each other and a reactant liquid sample while in the cuvette for analysis in the cuvette, and a method of use of such cuvette. There is provided a cuvette body of a suitable plastic defining at least two chambers interconnected by a passageway of relatively small cross section having at least the end portions thereof of capillary size to prevent under many circumstances, as by surface tension, accidental mixture of liquid reactants in the chambers. If there is a substantial head of liquid in one chamber and/or a risk of impact of the cuvette with an external foreign object, sufficient to break such surface tension, an air lock in the passageway when the latter is below the liquid levels in the chambers prevents such accidental mixture. A baffle in the passageway enhances separation of liquids and/or solid substances in the chambers. The chambers are open-topped, and a unitary probe-wiping multi-ply laminated cover of a type puncturable by a probe extends over the chambers closing them from the external environment. The laminated cover tends to be self-closing with reference to such punctures. One ply is of metal foil to act as a vapor seal and has an undercoating of a heat sealable material compatible with the body material and sealed thereto. The top ply is of a moisture-absorbent material which is secured to the foil ply by an intermediate plastic ply.
Patent NL-7612402-A (NL)
Title: Branch pipe fitting for main pipe - has rotatable sleeve between nut and gasket to allow adjustment of fitting
IPC: F16L41/10
Filed: 1976-11-09
Abstract: The branch pipe fitting has an integral or a separate parallel screw threaded end (3) arranged to fit a screw threaded opening in a main pipe (2). A resilient sealing gasket (4) is fitted around the end and has an end surface which contacts the outer surface of the main pipe. The other end of the gasket is contacted by a collar or ring (11) and a locknut (6) is threaded onto the screw threaded end of the fitting. The collar or ring is held on the locknut and is capable of rotating relative to the locknut. The ring and locknut allows the locknut to be tightened to produce a fluid tight seal while allowing the fitting to be angularly moved without creating any leaks.
Patent NL-7808665-A (NL)
Title: Fine porous sintered silicon powder articles - made by sintering at below 1340 degrees Celsius in an inert reducing atmos. in the presence of metal halide accelerator
IPC: B22F3/10
Filed: 1978-08-22
Abstract: Formed articles are made by sintering silicon powder at 1340 degrees C in a reducing atmos. comprising an inert gas to which hydrogen has been added, and in the presence of metal halides which fully or partially decompose at elevated temps. The process allows Si powder to be sintered at lower temps. than are normally used, So that special furnaces are not required and local melting phenomena in the prod. are avoided. Sintered prods. with a fine porous structure are obtd. which corresponds with that of the sinter powder. Since the coarse pored articles obtd. at higher sintering temps. are avoided, shrinkage of the sintered prods. is reduced. The sintered prods. are esp. useful as carriers for thin silicon layers. In contrast to other carriers, they have the same coefft. of expansion as the silicon layer, do not react with the silicon layer, and have good heat withdrawl properties from the silicon layer.
Patent NL-7812278-A (NL)
Title: Y=shaped pedalo-type water sport craft - composed of three air chambers with PVC walls and nylon bearings for pedal crank axles
IPC: B63B35/73
Filed: 1978-12-18
Abstract: A vaguely Y-shaped pedalo, with pedal drive operated by a user who lies prone between the legs of the Y with his/her chest upon the stem of the Y is claimed. The pedal drive is located between and at the ends of the legs of the Y. The pedalo is composed of 3 welded-together but other wise independent air chambers. There are means for collapsing or folding the pedalo to render it less bulky and more easily transportable. The chambers are defined by PVC walls. The pedal drive is mounted in nylon bearings at the ends of the legs of the Y.
Patent NL-7908836-A (NL)
Title: Sailing boat or sail board - has hydrofoil secured below underside, may have second hydrofoil with smaller incidence angle at rear
IPC: B63B1/24
Filed: 1979-12-07
Abstract: The sail board (1) has at least one hydrofoil (2,3) arranged below its underside. There may be two such hydrofoils arranged at a distance behind one another in which case the angle of incidence of the front foil is pref. greater than that at the rear. The hydrofoil may have a transverse V-profile with the apex upwards or downwards. The wing tips of each hydrofoil may extend in rearward direction. The hydrofoil(s) may be releasably and/or adjustably secured under the boat or sail board.
Patent NL-7909215-A (NL)
IPC: E05D5/06
Filed: 1979-12-20
Abstract: The hinge of the present invention comprises two like hinge elements (1) made of a sheet material, each element (1) being generally rectangular and folded at one end thereof to form a cylindrical casing (2), the remainder of each element forming an L-shaped flap (3, 6). By virtue of the thin sheet-like construction of the hinge elements (1), no recesses are normally required to be cut in the door or frame and the L-shaped flap (3, 6) which has a corner extending parallel to the cylindrical casing (2), ensures the square location of the hinge element (1). <IMAGE>
Patent NL-8000840-A (NL)
Title: Cutting unit for underwater-trench in rocky ground - using suction cutter dredger with edge cutting disc driven by suction head drive shaft
IPC: E02F3/92
Filed: 1980-02-11
Abstract: The unit cuts a trench (11) in a hard, e.g. rocky, bed of a water course using a disc-shaped rotary cutting tool (7). It uses a vessel (1), such as a suction cutter dredger, which can be moved and positioned relative to the bed and comprises a vertically movable frame (3) with drive mechanism (6) for a cutter head. The cutting disc (7) is coupled to the cutter head drive shaft (6) at the bottom of the frame. The wheel (7) may have a horizontal shaft at right angles to the drive shaft (6) or may be directly carried at the end of this shaft.
Patent NL-8006031-A (NL)
Title: Dehydrogenation/dehydrocyclisation catalyst - contg group vib metals and tin or lead oxides
IPC: B01J23/24
Filed: 1980-11-04
Abstract: A catalyst system for dehydrogenation and/or dehydrocyclisation of hydrocarbons comprises an inert oxide (pref. gamma-alumina) support impregnated with 5-15% wt. (based on total) of a Group VI metal and 1.0-10% of Pb or Sn oxide as promoter. Aliphatic paraffinic hydrocarbons (2-5C atoms) yield olefins and H2 and higher paraffins yield aromatics. The processes are operated at 550-1250 degrees F (550-1150 degres F for dehydrocyclisation), 0.01-2600 mmHg and LHSV 0.1-10 (pref. temps. are 1100-1250 degrees F for ethane as feed and 900-1150 degrees F for 3-5C paraffins).
Patent NL-8500513-A (NL)
Title: Disposable underarm dress shield - consists of absorbent, cellulose-based material with self-adhesive securing strip
IPC: A41D27/13
Filed: 1985-02-22
Abstract: The shield comprises cellulose-based material with high moisture absorbing power. It is pref. provided with a strip of (self-) adhesive material along at least one edge, at the arm hole position. The absorbent material may be paper and may be scent-impregnated.
Patent NL-8501785-A (NL)
Title: Sagging tram ore rail track repair method - corrects subsidence by lifting track and sleepers and filling space by quick-setting mortar mixt. including aluminium oxide cement
IPC: E01B27/18
Filed: 1985-06-20
Abstract: The method is for correcting sagging rails or road surfaces due to subsidence. It comprises lifting the track from above, forming a space underneath. This space is filled with quick setting mortar, being below the longitudinal sleepers. The space is supplied with mortar which is a mixt. of clay-like lime, cement and cement with a high percentage i.e. 40 per cent of aluminium oxide and 7 per cent silicic acid. There is also a binding agent liq. e.g. water. The clay-like lime is pref. marl.
Patent NL-8502298-A (NL)
IPC: B29C55/00
Filed: 1985-08-21
Abstract: High strength and modulus articles, such as filaments, fibers, tapes, films, tubes, bars or profiles, are prepared by irra­diating a solid, particular, lamellar, disentangled polyethylene with a Mw ≧ 4 × 10⁵, transforming this polyethylene above the melt tem­perature into an article, cooling said article to below the melting point and stretching it in several steps at rising temperature but below the melting point of the article.Advantages are i.a. the lower costs compared with the known processes, such as solid state extrusion or thermoreversible gelation.
Patent NL-8502770-A (NL)
Title: Output coupling assembly for microwave receiving dish antenna
IPC: H01Q25/04
Filed: 1985-10-10
Abstract: The dish-shaped antenna (1) has a cylindrical waveguide (6) connected to its focus. At intervals between the focus and the terminated (13) end of the waveguide are coaxial resonant cavities (8). The cavities may have one (16) or more (14,15) outlet ports. The number and alignment of the slot apertures between the inside of the waveguide (6) and the resonant cavities (8) are chosen to select the propagation modes for the signals required at the outlet ports. The signals from the various ports can be further processed to obtain sum and difference data.
Patent NL-8700243-A (NL)
IPC: A01K1/02
Filed: 1987-02-02
Abstract: A passage device for cattle comprising an opening (23) closable by two doors (2, 3) hinged around vertical pins on either side of the opening, in which as viewed from the space accessible via the passage device, one door is openable only outwardly and the other door only inwardly.
Patent NL-8700837-A (NL)
Title: External rear view mirror for motor vehicle - changes reflective characteristics automatically in proportion to ambient light levels
IPC: B60R1/08
Filed: 1987-04-09
Abstract: The driving mirror has a clear glass front plate (6) and a silvered (10) glass rear plate (6). The silvering is a mirror quality silver electrode covered by a silicon dioxide protective layer (12). The rear face of the front plate (6) is covered by a transparent indium tin oxide electrode (9). Between the two electrodes, which are separated by distance pieces (8), is a layer of liquid crystal material (12), which has a 90 deg. twisted cell configuration. The liq. crystal layer is supplied with a 1 kHz signal by a control circuit (14), powered by the vehicle's 12 volt battery system. The amplitude of the signal is controlled by the ambient light reaching a photo-detector (4) in the mirror surround. An optional polarising optical filter (13) reduces non-reflective glare.
Patent NL-8802707-A (NL)
Title: Control system supplying water using IR heat detector - has control circuit operating closure in supply pipe and variable timer
IPC: E03D5/10
Filed: 1988-11-03
Abstract: The system controls the turning on and off of a water supply has a passive infra-red body heat detector placed near a tap point. A control circuit is joined to the detector which operates a closure mounted in a water supply pipe near the tap point. The detector delivers a signal to the control circuit for the temporary operation of the closure in reaction to a change in the infra-red emission caused by the movement of a person near the tap point. The control circuit of the water tap point is set so that is opens or shuts according to the approach or absence of a person. The control circuit is fitted with a timer so that the closure automatically opens after an adjustable time and the sensitivity of the detection level switch is low at rest and increases after the opening of the closure.
Patent NL-9000697-A (NL)
IPC: B65F1/16
Filed: 1990-03-23
Abstract: A plastic container with a bottom and, connecting continuously onto the edge thereof a standing wall of random shape on the upper circular edge portion of which can be placed a cover provided with a peripheral groove for receiving said edge portion and wherein the cover and the edge portion are provided with co-acting locking means, being formed on the one hand by a number of L-shaped locking members distributed uniformly over the periphery, the one leg of which is fixed to the cover or the edge portion of the container such that the one leg is oriented perpendicularly to the bottom, and on the other hand by an outward pointing lip on the edge portion or the cover against which the other leg of the locking member can be placed, so facilitating the maneuverability of the cover during filling of the container since it has only to be lifted up, while for its permanent closure the cover has to be turned through a determined distance relative to the container in order to place all the locking members simultaneously in contact with the co-acting lip, whereby the cover is locked onto the container. <IMAGE>
Patent NL-9002206-A (NL)
Title: System for producing coloured pattern on mast, flagpole, etc. - uses backed layers of colour foil, cutting device, and transfer foil
IPC: B44C1/16
Filed: 1990-10-10
Abstract: The system is used to apply rows (9) of coloured patches (1) to the surface of a cylindrical or tapering post. The basic material is a thin layer of coloured material (3) applied to a backing foil (2). Areas of the coloured layer are removed by an unspecified device (4), leaving (b) a pattern (5) of separate coloured 'patches' on the backing foil. A transparent transfer foil (6) is then applied (c) to the upper surface. The backing foil is then removed, exposing the self-adhesive coating on the rear of the patches. The transfer foils and patches are then applied (d) to the surface of the post (7). The transfer foil is then peeled off and replaced (e) by a coating of transparent varnish (8).
Patent NL-9100587-A (NL)
Inventor: BUISMAN CEES JAN NICO
IPC: C01B17/02
Filed: 1991-04-04
Abstract: PCT No. PCT/NL92/00064 Sec. 371 Date Dec. 6, 1993 Sec. 102(e) Date Dec. 6, 1993 PCT Filed Apr. 3, 1992 PCT Pub. No. WO92/17410 PCT Pub. Date Oct. 15, 1992.The invention provides a method for removing sulphur compounds from water by anaerobic reduction of the sulphur compounds to sulphide, followed by a partial oxidation of the sulphide to elementary sulphur. The anaerobic reduction is carried out at elevated temperature, either continuously at a temperature of 45 DEG -70 DEG  C., or periodically at a temperature of 55 DEG -100 DEG  C. If the reduction is carried out periodically, a single rise in temperature for a few hours to several days over a period of 3-6 months can suffice. The method is particularly applicable to the removal of sulphate, sulphite and thiosulphate.
Patent NL-9201852-A (NL)
Title: Welding rule for joining polymer plastics
IPC: B29C65/18
Filed: 1992-10-26
Abstract: The invention relates to a welding rule (welding bar) having a wide slot on its side faces, which is filled with a mechanically pressure-resistant plastic material having very low heat conduction (thermal conductivity). This material is mounted in the slot by bonding. The welding rule is provided with a layer of PTFE (polytetrafluoroethylene). The object of the invention is to provide a welding rule whose accumulated heat in the welding head can be controlled by adjusting the thermal resistance (heat resistance) in the welding rule. This control is achieved by providing the welding rule with longitudinal slots, so that only a small part of the thickness remains in the centre of that thickness. This part has the function of serving as a thermal resistor. The heat supplied to the welding rule on one side will be able to reach the opposite side only by heat transfer via the remaining "thin" material part. To prevent the welding rule from becoming unstable because of the slots, a reinforcing plastic strip is introduced into those slots. The material of this strip consists of PEEK (polyetheretherketone), a material having great compressive strength and a very poor thermal conductivity coefficient. The strip is fixed by means of bonding. The welding rule as a whole is provided with a layer consisting of PTFE (polytetrafluoroethylene). This welding rule allows welded joints to be produced on polymer materials.
Patent NL-9202101-A (NL)
IPC: B42D15/10
Filed: 1992-12-03
Abstract: Known identification documents such as passports and driving licences have a photograph for purposes of identification of the holder of the document. Due to the fact that such a photograph can be replaced by another photograph, such known documents are fraudproof only to a limited extent. If these identification documents already provided with the photograph are further provided according to the invention with a copy of the photograph printed on the identification document, they become highly fraudproof, due to the fact that the printed copy cannot be replaced, and the photograph can be compared at any time with said printed copy, which makes replacing the photograph pointless. <IMAGE>
Patent NL-9302056-A (NL)
IPC: F42B12/74
Filed: 1993-11-26
Abstract: The invention relates to a bullet based on an Sn alloy, wherein the Sn alloy comprises Cu, Sb, Bi and/or Zn as alloying element, wherein the Sn alloy preferably contains 0.2-10% by weight Cu, preferably 0.2-6% by weight Cu, or 0.2-10% by weight Cu and 0.5-20% by weight Sb, preferably 0.2-5% by weight Cu and 0.5-10% by weight Sb, or 1-15% by weight Sb, preferably 1-10% by weight Sb, or 0.5-30% by weight Bi, preferably 5-20% by weight Bi, or 0.005-10% by weight Zn, preferably 0.01-1% by weight Zn; and to the use of an Sn alloy for manufacturing a bullet.